Surgical and histological observations of trochlear neurinoma - Case report

Misaki Kohama; Kensuke Murakami; Toshiki Endo; Mika Watanabe; Teiji Tominaga

doi:10.2176/nmc.49.217

Surgical and histological observations of trochlear neurinoma - Case report

Misaki Kohama, Kensuke Murakami, Toshiki Endo, Mika Watanabe, Teiji Tominaga

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

A 47-year-old woman presented with an extremely rare case of trochlear nerve neurinoma manifesting as left hemiparesis. Magnetic resonance imaging demonstrated a cystic tumor, 4 cm in diameter, in the right ambient and cerebellopontine cisterns, compressing the midbrain and upper pons. The preoperative diagnosis was trigeminal neurinoma. However, the tumor was identified arising from the trochlear nerve, and was totally removed via the posterior transpetrosal approach. The histological diagnosis was neurinoma. The patient's hemiparesis improved postoperatively. Preoperative diagnosis of trochlear neurinoma must distinguish the neurological presentations of trochlear and trigeminal neurinomas and to analyze the microanatomy of the tumor and skull base structures on neuroimaging.

Original language	English
Pages (from-to)	217-220
Number of pages	4
Journal	Neurologia medico-chirurgica
Volume	49
Issue number	5
DOIs	https://doi.org/10.2176/nmc.49.217
Publication status	Published - 2009

Keywords

Neurinoma
Posterior transpetrosal approach
Trochlear nerve

ASJC Scopus subject areas

Surgery
Clinical Neurology

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10.2176/nmc.49.217

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abstract = "A 47-year-old woman presented with an extremely rare case of trochlear nerve neurinoma manifesting as left hemiparesis. Magnetic resonance imaging demonstrated a cystic tumor, 4 cm in diameter, in the right ambient and cerebellopontine cisterns, compressing the midbrain and upper pons. The preoperative diagnosis was trigeminal neurinoma. However, the tumor was identified arising from the trochlear nerve, and was totally removed via the posterior transpetrosal approach. The histological diagnosis was neurinoma. The patient's hemiparesis improved postoperatively. Preoperative diagnosis of trochlear neurinoma must distinguish the neurological presentations of trochlear and trigeminal neurinomas and to analyze the microanatomy of the tumor and skull base structures on neuroimaging.",

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AU - Kohama, Misaki

AU - Murakami, Kensuke

AU - Endo, Toshiki

AU - Watanabe, Mika

AU - Tominaga, Teiji

PY - 2009

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Surgical and histological observations of trochlear neurinoma - Case report

Abstract

Keywords

ASJC Scopus subject areas

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