Colloid (Enterogenous) Cyst in the Frontal Lobe —Case Report—

Takafumi TANEI; Kazuhiro FUKUI; Takenori KATO; Kenichi WAKABAYASHI; Norio INOUE; Masao WATANABE

doi:10.2176/nmc.46.401

Case Reports

Colloid (Enterogenous) Cyst in the Frontal Lobe

—Case Report—

Takafumi TANEI, Kazuhiro FUKUI, Takenori KATO, Kenichi WAKABAYASHI, Norio INOUE, Masao WATANABE

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Keywords: colloid cyst, frontal lobe, immunohistochemical examination, electron microscopy examination

JOURNAL OPEN ACCESS

2006 Volume 46 Issue 8 Pages 401-404

DOI https://doi.org/10.2176/nmc.46.401

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Abstract

A 60-year-old man presented with a left frontal mass lesion incidentally detected at a health check without apparent symptoms. Computed tomography revealed the lesion as homogeneous high density and magnetic resonance (MR) imaging showed the lesion as hyperintense on T₁-weighted images, isointense on T₂-weighted images, and hypointense on diffusion-weighted images. T₁-weighted MR images with gadolinium showed no enhancement of the mass lesion. Cerebral angiography revealed an avascular area around the left frontal lesion. Total removal of the lesion was achieved through a craniotomy without complications. Histological, immunohistochemical, and electron microscopy examinations established the definite diagnosis of colloid cyst.

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