Extragonadal Germ Cell Tumors in the Mexican Population

Abstract

Aim: Extragonadal Germ Cell Tumors (EGGCT) are rare malignancies which represent a unique entity because their biology and behavior is substantially different from the tumors whose source is the gonads. Methods: All cases of Extragonadal Germ Cell Tumors diagnosed and treated at the Department of Oncology of the General Hospital in Mexico City between 2015 and 2020 were retrospectively evaluated to determine the clinical and pathological characteristics of the tumors as well as the different treatments utilized and follow-up. Results: Among a total of 50 patients, the mediastinum was the most frequent location, being found in 46 patients followed by 2 in the retroperitoneal space, 1 in the ethmoidal air cells, and 1 in the pineal gland. The predominant histopathology was a mixed germinal tumor in 82% of the cases with the rest being pure seminomas. All patients received first-line systemic treatment followed by surgery or second-line treatment according to their initial response to therapy. Conclusions: Extragonadal Germ Cell Tumors require a multidisciplinary approach to achieve an adequate diagnosis and treatment. The clinical and pathological differences like tumor site, histopathological type, and tumor stage influence the progression-free survival and the global overall survival.