Testicular Cancer Treatment (Professional) (cont.)
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Treatment Option Overview
Testicular cancer is broadly divided into seminoma and nonseminoma for treatment planning because seminomatous types of testicular cancer are more sensitive to radiation therapy and chemotherapy and are less prone to distant metastases. Moreover, nonseminomas may include teratomatous elements, which tend to be resistant to chemotherapy and often require surgery for cure. By definition, pure seminomas do not contain elements of teratoma. Therefore, surgery plays a larger role in the management of nonseminomas than in the management of seminomas. Nonseminomatous testicular tumors include:
An international germ cell tumor prognostic classification has been developed based on a retrospective analysis of 5,202 patients with metastatic nonseminomatous and 660 patients with metastatic seminomatous germ cell tumors. All patients received treatment with cisplatin- or carboplatin-containing therapy as their first chemotherapy course. The prognostic classification, shown below, was agreed on in 1997 by all major clinical trial groups worldwide. It should be used for reporting clinical trial results of patients with germ cell tumors.
A meta-analysis of treatment outcomes for patients with advanced nonseminoma suggested that 5-year survival rates have improved for those patients with a poor prognosis during the period of 1989 to 2004. In addition to improved therapy, the improvement seen in these survival rates could be the result of publication bias, changes in patient selection in reported clinical trials, or more sensitive staging methods that could migrate less-advanced stages to more-advanced stage categories (i.e., stage migration).
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