title: [A Very Rare Case of Diffuse Subependymal Metastases from Small Cell Lung Carcinoma].
abstract: While parenchymal metastases are common in solid systemic cancers, subependymal metastases are rare. Approximately half of the reported cases of intraventricular metastases originate from renal carcinoma. A 65-year-old man presented with general fatigue, appetite loss, nausea, and disorientation. Radiological examination revealed diffuse periventricular tumors. The patient underwent an open biopsy via right frontotemporal craniotomy. The patient was diagnosed with metastatic small cell lung carcinoma after histopathological examination. Although subependymal metastases from solid systemic cancer are very rare, this ventricular wall abnormality in the cancer patients must not be overlooked. Many small subependymal metastases might be missed on routine examination.
authors.affiliation: Department of Neurosurgery, Nagasaki Rosai Hospital.
authors.forename: Ichiro
authors.initials: I
authors.lastname: Kawahara
authors.forename: Takashi
authors.initials: T
authors.lastname: Fujimoto
authors.forename: Keisuke
authors.initials: K
authors.lastname: Ozono
authors.forename: Makoto
authors.initials: M
authors.lastname: Hirose
authors.forename: Keisuke
authors.initials: K
authors.lastname: Toyoda
authors.forename: Naoki
authors.initials: N
authors.lastname: Kitagawa
authors.forename: Tooru
authors.initials: T
authors.lastname: Ikeda
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Uchihashi
mesh_terms: D000368:Aged; D001706:Biopsy / Q000379:methods; D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D017809:Fatal Outcome; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D055752:Small Cell Lung Carcinoma / Q000000981:diagnostic imaging* / Q000556:secondary* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods