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J Thorac Cardiovasc Surg 2003;125:913-923
© 2003 The American Association for Thoracic Surgery

General Thoracic Surgery

Mediastinal metastases from testicular nonseminomatous germ cell tumors: Patterns of dissemination and predictors of long-term survival with surgery

From the Departments of Surgery, Thoracic Division,^a and Medicine, Departments of Biostatistics^b and Oncology^c Divisions, Indiana University School of Medicine, Indianapolis, Ind.

Read at the Eighty-second Annual Meeting of The American Association for Thoracic Surgery, Washington, DC, May 5-8, 2002.

Received for publication Feb 27, 2002. Revisions requested May 16, 2002; revisions received May 28, 2002. Accepted for publication June 5, 2002. Address for reprints: Kenneth A. Kesler, MD, Indiana University, Department of Surgery, Thoracic Division, Barnhill Dr, EM #212, Indianapolis, IN 46202 (E-mail: kkesler{at}iupui.edu).

Objectives: The purpose of this study was to determine the pattern of mediastinal dissemination of nonseminomatous germ cell tumors of testicular origin and evaluate variables that may influence survival with mediastinal dissection in patients with metastatic nonseminomatous germ cell tumors.
Methods: From 1981 to 2000, a total of 421 patients were seen at our institution for extirpation of residual lung or mediastinal disease after cisplatin-based chemotherapy for metastatic testicular nonseminomatous germ cell tumors. We reviewed 268 of these patients, with a mean age of 26.8 years, who required at least one surgical procedure to remove residual mediastinal disease. Pathologic types of resected residual mediastinal disease were necrosis (15%), teratoma (59%), persistent nonseminomatous germ cell cancer (15%), and non-germ cell carcinomatous degeneration (11%). Twelve variables were evaluated by univariate analyses, and four variables potentially statistically significant at P < .10 were subsequently entered into a Cox regression model.
Results: All patients demonstrated metastases to the visceral mediastinum. Fewer patients also demonstrated metastases to the paravertebral sulcus or anterior compartments (16% and 7%, respectively). Overall 5- and 10-year survivals were 86% ± 2% and 74% ± 4%, respectively. According to multivariate analysis, disease-related survival was negatively influenced by an elevated preoperative ß-human chorionic gonadotropin level (P = .028) and adverse pathologic characteristics of residual mediastinal disease (P = .006).
Conclusions: Testicular nonseminomatous germ cell tumors follow a predictable pattern of mediastinal dissemination, primarily following the course of the thoracic duct and its major tributaries. Patients who require surgery to remove residual mediastinal disease after cisplatin-based chemotherapy for metastatic nonseminomatous germ cell tumors have good to excellent long-term survivals. These results justify an aggressive surgical approach, including multiple surgical procedures if clinically indicated.

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