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  • Title: Improved management of abdominal undescended testicular tumors with bulky confluent retroperitoneal nodal metastases.
    Author: Kulkarni JN, Desai SM, Phadke GK, Tongaonkar HB.
    Journal: J Urol; 1996 Oct; 156(4):1341-4. PubMed ID: 8808867.
    Abstract:
    PURPOSE: Germ cell tumors of the abdominal undescended testis associated with confluent bulky retroperitoneal metastases are challenging problems. We report the results of neoadjuvant cisplatin based chemotherapy after diagnosis of germ cell tumors by fine needle aspiration cytology of the abdominal testicular mass. After chemotherapy all patients underwent abdominal orchiectomy with retroperitoneal lymph node dissection for residual nonseminomatous germ cell tumors or radiotherapy for pure seminomas. MATERIALS AND METHODS: Between 1980 and 1991, 57 of 425 patients (13.4%) with germ cell tumors of the testicle had malignancy in an undescended testis, while 39 (68.4%) had tumor in an abdominal testis with confluent bulky metastasis. Metastatic evaluation included tumor marker studies, chest x-ray and computerized tomography of the abdomen. Among the tumors 29 (74.4%) were large volume seminomas (stages IIc, III and IV) and 10 (25.6%) were large volume nonseminomas. All 39 patients received 3 cycles of induction chemotherapy, and orchiectomy was deferred until its completion (14 received vinblastine, actinomycin D and bleomycin-6, and 25 received bleomycin, etoposide and cisplatin). After evaluation of response, the testis was excised. Overall followup was 2 to 12 years (median 4.6). RESULTS: Of 29 seminomas 14 (48.3%) showed a complete and 11 (37.9%) showed a partial response. The latter tumors were treated subsequently with radiotherapy. Four patients with progressive disease died, for an actuarial survival rate of 86%. Of the 10 patients with nonseminomatous germ cell tumor 2 (20%) had a complete response and 4 had a partial response. All patients with a partial response underwent retroperitoneal lymph node dissection. Overall, 4 patients with progression and 2 with a partial response died, for an actuarial survival rate of 39%. Of 39 post-chemotherapy orchiectomy specimens 24 (61.5%) showed viable tumor cells. Furthermore, 16 of 39 patients (41%) had additional ilioinguinal metastases requiring adjuvant radiotherapy or surgery. CONCLUSIONS: Surgical removal of the primary tumor in an undescended testis with bulky metastasis is difficult. We believe that initial chemotherapy followed by 1-stage surgical removal of the primary and residual metastasis is a favorable option to improve compliance and decrease the incidence of loss to followup. Atypically altered ilioinguinal metastases may necessitate a change in radiotherapy ports and/or retroperitoneal lymph node dissection boundaries. The significantly poorer survival with nonseminomatous germ cell tumor could be due to the fact that 50% of the lesions were stage IV at presentation. However, multivariate analysis showed only tumor histology to be the significant parameter and not initial stage at presentation.
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