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  • Title: Mixed germ cell tumors with abundant sarcomatous component in the temporal lobe after radiochemotherapy of neurohypophyseal germinoma: a case report.
    Author: Kamitani H, Miyata H, Ishibashi M, Kurosaki M, Mizushima M, Akatsuka K, Ohama E, Watanabe T.
    Journal: Brain Tumor Pathol; 2006 Oct; 23(2):83-9. PubMed ID: 18095124.
    Abstract:
    We report a case of intracranial germ cell tumor that showed pathological changes from neurohypophyseal germinoma to mixed germ cell tumors consisting exclusively of undifferentiated sarcomatous component after radiochemotherapy. Three surgical specimens and autopsied brain from the patient were histologically examined. An initial specimen from the neurohypophyseal tumor was diagnosed as germinoma with a two-cell pattern. Five years later, after repeated radiochemotherapy, the second specimen resected from the right temporal lobe showed mixed germ cell tumors consisting of the three components of germinoma, choriocarcinoma, and immature teratoma. Six months later after intensive radiotherapy, the right temporal tumor recurred and was surgically removed. The histological diagnosis was mixed germ cell tumors with abundant immature teratoma component. The patient died of uncontrollable tumor growth with repeated intratumoral hemorrhages. The autopsied brain showed sarcoma with angionecrosis. This pathological alteration indicated an increase in the sarcomatous component after undergoing various treatments. We discuss the histological changes of intracranial germ cell tumor modified by treatment.
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