title: Malignant transformation of an intracranial germinoma into a choriocarcinoma.
abstract: The recurrence or metastasis of intracranial pure germinomas as germ cell tumours of different histological types has rarely been reported. The present report concerns the first case in the literature of intracranial recurrence of a germinoma transformed into a choriocarcinoma. A 17-year-old man presented with a 1 month history of headache. MRI revealed a homogeneously enhanced mass within the pineal and suprasellar regions. The tumour was resected, and histological examination identified it as a pure germinoma. After resection, the patient underwent chemotherapy and radiotherapy and the mass disappeared. At 5 years and 5 months later, the patient presented with nausea and headache, and recurrence of the tumour was revealed in the left lateral ventricle. The tumour was resected and histological diagnosis identified it as a choriocarcinoma. The patient was treated with chemotherapy and radiotherapy, but died due to dissemination 1 month later. An autopsy was not performed.
authors.affiliation: National Hospital Organization Disaster Medical Center, 3256 Midori-cho, Tachikawa-shi, Tokyo, 190-0014, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Takeuchi
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Takasato
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Masaoka
authors.forename: Takanori
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Naoki
authors.initials: N
authors.lastname: Otani
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Yoshino
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yatsushige