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Childhood Extracranial Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Treatment of Malignant Gonadal GCTs

Childhood Malignant Testicular GCTs

Testicular GCTs in young boys

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Study Design Categories, Definitions, and Levels of Evidence

Prospective, randomized, controlled trials and meta-analyses of prospective, randomized, controlled trials. The randomized, double-blinded, controlled trial is the gold standard of study design. To achieve this ranking, the study allocation must be blinded to the investigator both before and after the randomization and the assignment to intervention group. This design provides protection from allocation bias by the investigator and from bias in the assessment of outcomes by both the...

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Testicular germ cell tumors (GCTs) in children occur almost exclusively in boys younger than 4 years.[1,2] The initial approach to evaluate a testicular mass in a young boy is important because a transscrotal biopsy can risk inguinal node metastasis.[3,4] Radical inguinal orchiectomy with initial high ligation of the spermatic cord is the procedure of choice.[5] Retroperitoneal dissection of lymph nodes is not beneficial in the staging of testicular GCTs in young boys. Computed tomography or magnetic resonance imaging evaluation, with the additional information provided by elevated tumor markers, appears adequate for staging.[3,4] Therefore, there is no reason to risk the potential morbidity (e.g., impotence and retrograde ejaculation) related to lymph node dissection.[6,7]

A Children's Cancer Group (CCG)/Pediatric Oncology Group (POG) clinical trial evaluated surgery followed by observation for boys aged 10 years or younger with stage I testicular tumors. This treatment strategy resulted in a 6-year event-free survival (EFS) of 82%; those boys who developed recurrent disease were salvaged with four cycles of standard-dose cisplatin, etoposide, and bleomycin (PEB), with a 6-year survival of 100%.[3,4] Boys younger than 10 years with stage II tumors were treated after diagnosis with four cycles of PEB.[8] Boys and adolescents (age not limited to 10 years or younger) with stage III and IV testicular tumors were treated with surgical resection followed by four cycles of standard or high-dose (HD)-PEB therapy. The 6-year survival outcome for males younger than 15 years with stage III and IV tumors was 100%, with 6-year EFS of 100% and 94%, respectively.[9] The use of HD-PEB therapy did not improve the outcome for these boys but did cause increased incidence of ototoxicity. Excellent outcomes for boys with testicular GCTs using surgery and observation for stage I tumors and carboplatin, etoposide, and bleomycin (JEB) and other cisplatin-containing chemotherapy regimens for stage II, III, and IV tumors have also been reported by European investigators.[6,10] Thus, surgery followed by standard-dose platinum-based chemotherapy is the recommended approach for stages II, III, and IV testicular GCTs in children younger than 15 years.

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