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![]() | PDQ® |
(Separate summaries containing information on screening for cervical cancer and prevention of cervical cancer are also available in PDQ.)
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
Cervical cancer is 1 of the most common cancers, accounting for 6% of all malignancies in women. There are an estimated 16,000 new cases of invasive cancer of the cervix and 5,000 deaths in the United States each year. The prognosis for this disease is markedly affected by the extent of disease at the time of diagnosis. Because a vast majority (greater than 90%) of these cases can and should be detected early through the use of the Pap smear,[2] the current death rate is far higher than it should be and reflects that, even today, Pap smears are not done on approximately one-third of eligible women.
Among the major factors that influence prognosis are stage, volume and grade of tumor, histologic type, lymphatic spread, and vascular invasion. In a large surgicopathologic staging study of patients with clinical stage IB disease reported by the Gynecologic Oncology Group (GOG), the factors that predicted most prominently for lymph node metastases and a decrease in disease-free survival were capillary-lymphatic space involvement by tumor, increasing tumor size, and increasing depth of stromal invasion with the latter being most important and reproducible.[3,4] In a study of 1,028 patients treated with radical surgery, survival rates correlated more consistently with tumor volume (as determined by precise volumetry of the tumor) than clinical or histologic stage.[5] A multivariate analysis of prognostic variables in 626 patients with locally advanced disease (primarily stage II, III, and IV) studied by the GOG revealed that periaortic and pelvic lymph node status, tumor size, patient age, and performance status were significant for progression-free interval and survival. The study confirms the overriding importance of positive periaortic nodes and suggests further evaluation of these nodes in locally advanced cervical cancer. The status of the pelvic nodes was important only if the periaortic nodes were negative. This was also true for tumor size. Bilateral disease and clinical stage were also significant for survival.[6] In a large series of cervical cancer patients treated by radiation therapy, the incidence of distant metastases (most frequently to lung, abdominal cavity, liver, and gastrointestinal tract) was shown to increase with increasing stage of disease from 3% in stage IA to 75% in stage IVA. A multivariate analysis of factors influencing the incidence of distant metastases showed stage, endometrial extension of tumor, and pelvic tumor control to be significant indicators of distant dissemination.[7] Controversy remains over whether or not adenocarcinoma of the cervix carries a significantly worse prognosis than squamous cell carcinoma of the cervix.[8] There are conflicting reports regarding the effect of adenosquamous cell type on outcome.[9,10] A report demonstrated that approximately 25% of apparent squamous tumors have demonstrable mucin production and behave more aggressively than their pure squamous counterparts suggesting that any adenomatous differentiation may confer a negative prognosis.[11] The decreased survival is mainly due to more advanced stage and nodal involvement rather than cell type as an independent variable. Human immunodeficiency virus-infected women have more aggressive and advanced disease and a poorer prognosis.[12] A study of patients with known invasive squamous carcinoma of the cervix found that overexpression of the c-myc oncogene was associated with a poorer prognosis.[13] Number of cells in S phase may also have prognostic significance in early cervical carcinoma.[14]
Molecular techniques for the identification of human papillomavirus (HPV) DNA are highly sensitive and specific. It is estimated that more than 6 million women in the United States have HPV infection and proper interpretation of these data is important. Epidemiologic studies convincingly demonstrate that the major risk factor for development of preinvasive or invasive carcinoma of the cervix is HPV infection, which far outweighs other known risk factors such as high parity, increasing number of sexual partners, young age at first intercourse, low socioeconomic status, and positive smoking history.[15,16] Some patients with HPV infection appear to be at minimal increased risk for development of cervical preinvasive and invasive malignancies while others appear to be at significant risk and candidates for intensive screening programs and/or early intervention.
However, use of a positive HPV DNA test to dictate more in-depth evaluation of the patient may lead to unwarranted and ineffective treatment and/or unnecessary patient anxiety. Conversely, current technology may be too insensitive to detect small amounts of potentially tumorigenic HPV types leading to a false sense of security. Clearly the patient with an abnormal cervical cytology of a high-risk type (Bethesda Classification) should be thoroughly evaluated with colposcopy and biopsy. Patients with low-risk cytology (Bethesda Classification) may or may not have preinvasive or microinvasive cancer and HPV DNA typing may aid in differentiating which patients to evaluate intensively and which to follow more conservatively.
Other studies show patients with low-risk cytology and high-risk HPV infection with types 16, 18, and 31 are more likely to have cervical intraepithelial neoplasia (CIN) or microinvasive histopathology on biopsy.[16-19] Studies [16,20] suggest that acute infection with HPV types 16 and 18 conferred an 11- to 16.9-fold risk of rapid development of high-grade CIN, but there are conflicting data requiring further evaluation before any recommendations may be made. Patients with low-risk cytology and low-risk HPV types have not been followed long enough to ascertain their risk. At present, studies are ongoing to determine how HPV typing can be used to help stratify women into follow-up and treatment groups. HPV typing may prove useful, particularly in patients with low-grade cytology or cytology of unclear abnormality. At present, how therapy and follow-up should be altered with low- versus high-risk HPV type has not been established.
References:
Squamous cell (epidermoid) carcinoma comprises approximately 90%, and adenocarcinoma comprises approximately 10% of cervical cancers. Adenosquamous and small cell carcinomas are relatively rare. Primary sarcomas of the cervix have been described occasionally, and malignant lymphomas of the cervix, both primary and secondary, have also been reported.
Cervical carcinoma has its origins at the squamous-columnar junction whether in the endocervical canal or on the portio of the cervix. The precursor lesion is dysplasia or carcinoma in situ (cervical intraepithelial neoplasia [CIN]), which can subsequently become invasive cancer. This process can be quite slow. Longitudinal studies have shown that in untreated patients with in situ cervical cancer, 30% to 70% will develop invasive carcinoma over a period of 10-12 years. However, in about 10% of patients, lesions can progress from in situ to invasive in a period of under 1 year. As it becomes invasive, the tumor breaks through the basement membrane and invades the cervical stroma. Extension of the tumor in the cervix may ultimately manifest as ulceration, exophytic tumor, or extensive infiltration of underlying tissue including bladder or rectum.
In addition to local invasion, carcinoma of the cervix can spread via the regional lymphatics or bloodstream. Tumor dissemination is generally a function of the extent and invasiveness of the local lesion. While cancer of the cervix generally progresses in an orderly manner, occasionally a small tumor with distant metastasis is seen. For this reason, patients must be carefully evaluated for metastatic disease.
Stages are defined by the Federation Internationale de Gynecologie et d'Obstetrique (FIGO) or the American Joint Committee on Cancer's (AJCC) TNM classification.[1-3] -- TNM definitions -- The definitions of the T categories correspond to the several stages accepted by FIGO. Primary tumor (T) TX: Primary tumor cannot be assessed T0: No evidence of primary tumor Tis: Carcinoma in situ T1/I: Cervical carcinoma confined to uterus (extension to corpus should be disregarded) T1a/IA: Invasive carcinoma diagnosed only by microscopy. All macroscopically visible lesions--even with superficial invasion--are T1b/IB. Stromal invasion with a maximal depth of 5 mm measured from the base of the epithelium and a horizontal spread of 7 mm or less. Vascular space involvement, venous or lymphatic, does not affect classification T1a1/Ia1: Measured stromal invasion 3 mm or less in depth and 7 mm or less in horizontal spread T1a2/IA2: Measured stromal invasion more than 3 mm and not more than 5 mm with a horizontal spread 7 mm or less T1b/IB: Clinically visible lesion confined to the cervix or microscopic lesion greater than T1a2/IA2 T1b1/IB1: Clinically visible lesion 4 cm or less in greatest dimension T1b2/IB2: Clinically visible lesion more than 4 cm in greatest dimension T2/II: Cervical carcinoma invades beyond uterus but not to pelvic wall or to the lower third of the vagina T2a/IIa: Tumor without parametrial involvement T2b/IIb: Tumor with parametrial involvement T3/III: Tumor extends to the pelvic wall and/or involves the lower third of the vagina, and/or causes hydronephrosis or nonfunctioning kidney T3a/IIIA: Tumor involves lower third of the vagina, no extension to pelvic wall T3b/IIIB: Tumor extends to pelvic wall and/or causes hydronephrosis or nonfunctioning kidney T4/IVA: Tumor invades mucosa of the bladder or rectum, and/or extends beyond true pelvis (Bullous edema is not sufficient to classify a tumor as T4) M1/IVB: Distant metastasis Regional lymph nodes (N) NX: Regional lymph nodes cannot be assessed N0: No regional lymph node metastasis N1: Regional lymph node metastasis Distant metastasis (M) MX: Distant metastasis cannot be assessed M0: No distant metastasis M1: Distant metastasis -- AJCC stage groupings -- -- Stage 0 -- Stage 0 is carcinoma in situ, intraepithelial carcinoma. There is no stromal invasion. Tis, N0, M0 -- Stage IA1 -- T1a1, N0, M0 -- Stage IA2 -- T1a2, N0, M0 -- Stage IB1 -- T1b1, N0, M0 -- Stage IB2 -- T1b2, N0, M0 -- Stage IIA -- T2a, N0, M0 -- Stage IIB -- T2b, N0, M0 -- Stage IIIA -- T3a, N0, M0 -- Stage IIIB -- T1, N1, M0 T2, N1, M0 T3a, N1, M0 T3b, Any N, M0 -- Stage IVA -- T4, Any N, M0 -- Stage IVB -- Any T, Any N, M1 -- FIGO staging -- -- Stage I -- Stage I is carcinoma strictly confined to the cervix; extension to the uterine corpus should be disregarded. Stage IA: Invasive cancer identified only microscopically. All gross lesions even with superficial invasion are stage Ib cancers. Invasion is limited to measured stromal invasion with a maximum depth of 5 mm* and no wider than 7 mm. Stage IA1: Measured invasion of the stroma no greater than 3 mm in depth and no wider than 7 mm diameter. Stage IA2: Measured invasion of stroma greater than 3 mm but no greater than 5 mm in depth and no wider than 7 mm in diameter. Stage IB: Clinical lesions confined to the cervix or preclinical lesions greater than stage IA. Stage IB1: Clinical lesions no greater than 4 cm in size. Stage IB2: Clinical lesions greater than 4 cm in size. -- Stage II -- Stage II is carcinoma that extends beyond the cervix but has not extended onto the pelvic wall. The carcinoma involves the vagina, but not as far as the lower third. Stage IIA: No obvious parametrial involvement. Involvement of up to the upper two-thirds of the vagina. Stage IIB: Obvious parametrial involvement, but not onto the pelvic sidewall. -- Stage III -- Stage III is carcinoma that has extended onto the pelvic sidewall. On rectal examination, there is no cancer free space between the tumor and the pelvic sidewall. The tumor involves the lower third of the vagina. All cases with a hydronephrosis or nonfunctioning kidney should be included, unless they are known to be due to other causes. Stage IIIA: No extension onto the pelvic sidewall but involvement of the lower third of the vagina. Stage IIIB: Extension onto the pelvic sidewall or hydronephrosis or nonfunctioning kidney. -- Stage IV -- Stage IV is carcinoma that has extended beyond the true pelvis or has clinically involved the mucosa of the bladder and/or rectum. Stage IVA: Spread of the tumor onto adjacent pelvic organs. Stage IVB: Spread to distant organs. * The depth of invasion should not be more than 5 mm taken from the base of the epithelium, either surface or glandular, from which it originates. Vascular space involvement, either venous or lymphatic, should not alter the staging.
References:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
Pretreatment surgical staging is the most accurate method to determine extent of disease. Because there is little evidence to demonstrate overall improved survival with routine surgical staging, it usually should be performed only as part of a clinical trial. Pretreatment surgical staging in bulky, but locally curable, disease may be indicated in select cases when a nonsurgical search for metastatic disease is negative. If abnormal nodes are detected by CT scan or lymphangiography, fine needle aspiration should be negative before a surgical staging procedure is performed. Surgery and radiation therapy are equally effective for early stage small volume disease.[2] Younger patients may benefit from operation in regard to ovarian preservation and avoidance of vaginal atrophy and stenosis.
Patterns of care studies clearly demonstrate the negative prognostic effect of increasing tumor volume. Therefore, treatment may vary within each stage as currently defined by FIGO, and will depend on tumor bulk and spread pattern.[3]
Therapy of patients with cancer of the cervical stump is effective, yielding results comparable to those seen in patients with an intact uterus.[4]
During pregnancy, no therapy is warranted for preinvasive lesions of the cervix, including carcinoma in situ, although expert colposcopy is recommended to exclude invasive cancer.
Treatment of invasive cervical cancer during pregnancy depends on the stage of the cancer and gestational age at diagnosis. The traditional approach is to recommend immediate therapy appropriate for the disease stage when the cancer is diagnosed before fetal maturity, and to delay therapy only if the cancer is detected in the final trimester.[5,6] However, other reports suggest that deliberate delay to allow improved fetal outcome may be a reasonable option for patients with stage Ia and early Ib cervical cancer.[7-9]
The designations in PDQ that treatments are "standard" or "under clinical evaluation" are not to be used as a basis for reimbursement determinations.
References:
Properly treated, tumor control of in situ cervical carcinoma should be nearly 100%. Either expert colposcopic-directed biopsy or cone biopsy is required to exclude invasive disease before therapy is undertaken. A correlation between cytology and colposcopic-directed biopsy is also necessary before local ablative therapy is done. Even so, unrecognized invasive disease treated with inadequate ablative therapy may be the most common cause of failure.[1] Failure to identify the disease, lack of correlation between the Pap smear and colposcopic findings, adenocarcinoma in situ, or extension of disease into the endocervical canal makes a laser, loop, or cold knife conization mandatory. The choice of treatment will also depend on several patient factors including age, desire to preserve fertility, and medical condition. Most important, the extent of disease must be known.
In selected cases, the outpatient loop electrosurgical excision procedure (LEEP) may be an acceptable alternative to cold-knife conization. This quickly performed in-office procedure requires only local anesthesia and obviates the risks associated with general anesthesia for cold-knife conization.[2,3] However, controversy exists as to the adequacy of LEEP as a replacement for conization.[4] A trial comparing LEEP with cold-knife cone biopsy showed no difference in the likelihood of complete excision of dysplasia.[5] However, 2 case reports suggested that the use of LEEP in patients with occult invasive cancer led to an inability to accurately determine depth of invasion when a focus of the cancer was transected.[6]
Treatment options:
Methods to treat ectocervical lesions include:
2. Laser therapy.[9]
3. Conization.
4. Cryotherapy.[10]
Total abdominal or vaginal hysterectomy is an accepted therapy for the postreproductive age group and is particularly indicated when the neoplastic process extends to the inner cone margin. For medically inoperable patients, a single intracavitary insertion with tandem and ovoids for 5,000 milligram hours (8,000 cGy vaginal surface dose) may be used.[11]
References:
Equivalent treatment options:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
Either radiation therapy or radical hysterectomy and bilateral lymph node dissection, by an experienced professional, results in cure rates of 85% to 90% for patients with small volume disease. The choice of either depends on patient factors and available local expertise. A randomized trial reported identical 5-year overall and disease-free survival rates when comparing radiation therapy to radical hysterectomy.[2] The size of the primary tumor is an important prognostic factor and should be carefully evaluated in choosing optimal therapy.[3] For adenocarcinomas that expand the cervix greater than 3 centimeters, the primary treatment should be radiation therapy.[4] After surgical staging, patients found to have small volume para-aortic nodal disease and controllable pelvic disease may be cured with pelvic and para-aortic irradiation.[5] The resection of macroscopically involved pelvic nodes may improve rates of local control with postoperative radiation therapy.[6] Treatment of unresected periaortic nodes with extended field radiation leads to long-term disease control in those patients with low volume (<2 cm) nodal disease below L3.[7] A single study showed a survival advantage in patients with tumors larger than 4 centimeters who received radiation to para-aortic nodes without histologic evidence of disease.[8] Toxic effects of para-aortic radiation is greater than pelvic radiation alone, but was mostly confined to patients with prior abdominopelvic surgery.[8] Patients who underwent extraperitoneal lymph node sampling had fewer bowel complications than those who had transperitoneal lymph node sampling.[7,9,10] Patients with "close" vaginal margins (<0.5 cm) may also benefit from pelvic irradiation.[11]
Treatment options:
3. Postoperative total pelvic irradiation plus chemotherapy following radical hysterectomy and bilateral pelvic lymphadenectomy:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
Either radiation therapy or radical hysterectomy, by an experienced professional, results in cure rates of 75% to 80%. The selection of either option depends on patient factors and local expertise. A randomized trial reported identical 5-year overall and disease-free survival rates when comparing radiation therapy to radical hysterectomy.[2] The size of the primary tumor is an important prognostic factor and should be carefully evaluated in choosing optimal therapy.[3] For bulky (>6 cm) endocervical squamous cell carcinomas or adenocarcinomas, treatment with high-dose radiation therapy will achieve local control and survival rates comparable to treatment with radiation therapy plus hysterectomy. Surgery after radiation therapy may be indicated for some patients with tumors confined to the cervix which respond incompletely to radiation therapy or in whom vaginal anatomy precludes optimal brachytherapy.[4] After surgical staging, patients found to have small volume para-aortic nodal disease and controllable pelvic disease may be cured with pelvic and para-aortic irradiation.[5] The resection of macroscopically involved pelvic nodes may improve rates of local control with postoperative radiation therapy.[6] Treatment of unresected periaortic nodes with extended field radiation leads to long-term disease control in those patients with low volume (<2 cm) nodal disease below L3.[7] A single study showed a survival advantage in patients who received radiation to para-aortic nodes without histologic evidence of disease.[8] Toxic effects of para-aortic radiation is greater than pelvic radiation alone, but was mostly confined to patients with prior abdominopelvic surgery.[8] Patients who underwent extraperitoneal lymph node sampling had fewer bowel complications than those who had transperitoneal lymph node sampling.[7,9,10] Patients with "close" vaginal margins (<0.5 cm) after radical surgery may also benefit from pelvic irradiation.[11]
Treatment options:
3. Postoperative total pelvic irradiation plus chemotherapy following radical hysterectomy and bilateral pelvic lymphadenectomy:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
The size of the primary tumor is an important prognostic factor and should be carefully evaluated in choosing optimal therapy.[2] Survival and local control are better with unilateral rather than bilateral parametrial involvement.[3] Patients who are surgically staged as part of a clinical trial and are found to have small volume para-aortic nodal disease and controllable pelvic disease may be cured with pelvic and para-aortic irradiation.[4] If postoperative external-beam therapy is planned following surgery, extraperitoneal lymph node sampling is associated with fewer radiation-induced complications than a transperitoneal approach.[5] The resection of macroscopically involved pelvic nodes may improve rates of local control with postoperative radiation therapy.[6] Treatment of unresected periaortic nodes with extended field radiation leads to long-term disease control in those patients with low volume (<2 cm) nodal disease below L3.[7] A single study showed a survival advantage in patients who received radiation to para-aortic nodes without histologic evidence of disease.[8] Toxic effects of para-aortic radiation is greater than pelvic radiation alone, but was mostly confined to patients with prior abdominopelvic surgery.[8] Patients who underwent extraperitoneal lymph node sampling had fewer bowel complications than those who had transperitoneal lymph node sampling.[5,7,9]
Treatment options:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
The size of the primary tumor is an important prognostic factor and should be carefully evaluated in choosing optimal therapy.[2] Patterns-of-care studies in stage IIIA/IIIB patients indicate that survival is dependent on the extent of the disease, with unilateral pelvic wall involvement predicting a better outcome than bilateral involvement, which in turn predicts a better outcome than involvement of the lower third of the vaginal wall.[3] These studies also reveal a progressive increase in local control and survival paralleling a progressive increase in paracentral (point A) dose and use of intracavitary treatment. The highest rate of central control was seen with paracentral (point A) doses of greater than 8,500 cGy.[4] Patients who are surgically staged as part of a clinical trial and are found to have small volume para-aortic nodal disease and controllable pelvic disease may be cured with pelvic and para-aortic irradiation. If postoperative external-beam therapy is planned following surgery, extraperitoneal lymph node sampling is associated with fewer radiation-induced complications than a transperitoneal approach.[5] The resection of macroscopically involved pelvic nodes may improve rates of local control with postoperative radiation therapy.[6] Treatment of unresected periaortic nodes with extended field radiation leads to long-term disease control in those patients with low volume (<2 cm) nodal disease below L3. Patients who underwent extraperitoneal lymph node sampling had fewer bowel complications than those who had transperitoneal lymph node sampling.[7]
Treatment options:
Recent results from each of 5 randomized phase III trials show an overall survival advantage for cisplatin-based therapy given concurrently with radiation therapy. The patient populations in these studies included women with FIGO stages IB2 to IVA cervical cancer treated with primary radiation therapy and women with FIGO stages I to IIA disease found to have poor prognostic factors (metastatic disease in pelvic lymph nodes, parametrial disease, or positive surgical margins) at time of primary surgery. Although the trials vary somewhat in terms of stage of disease, dose of radiation, and schedule of cisplatin and radiation, they all demonstrate significant survival benefit for this combined approach. The risk of death from cervical cancer was decreased by 30% to 50% by concurrent chemoradiation. Based on these results, strong consideration should be given to the incorporation of concurrent cisplatin-based chemotherapy with radiation therapy in women who require radiation therapy for treatment of cervical cancer.[1]
The size of the primary tumor is an important prognostic factor and should be carefully evaluated in choosing optimal therapy.[2] After surgical staging, patients found to have small volume para-aortic nodal disease and controllable pelvic disease may be cured with pelvic and para-aortic irradiation.
Treatment options:
There is no standard chemotherapy treatment of patients with stage IVB cervical cancer that provides substantial palliation. All such patients are appropriate candidates for clinical trials testing single agents or combination chemotherapy employing agents listed below or new anticancer treatments in phase I and II clinical trials.[1]
Treatment options:
2. Chemotherapy. Tested drugs include:
There is no standard treatment of recurrent cervical cancer that has spread beyond the confines of a radiation or surgical field. All such patients are appropriate candidates for clinical trials testing drug combinations or new anticancer agents. For locally recurrent disease, pelvic exenteration can lead to a 5-year survival rate of 32% to 62% in selected patients.[1,2]
Treatment options:
2. Chemotherapy can be used for palliation. Tested drugs include:
Date Last Modified: 07/1999
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