Stereotactic Radiosurgery for Recurrent Pleomorphic Adenoma Invading the Skull Base —Case Report—

Tohru KAMIDA; Tatsuya ABE; Ryo INOUE; Hidenori KOBAYASHI; Masashi SUZUKI; Akira MATSUMOTO

doi:10.2176/nmc.45.161

Case Reports

Stereotactic Radiosurgery for Recurrent Pleomorphic Adenoma Invading the Skull Base

—Case Report—

Tohru KAMIDA, Tatsuya ABE, Ryo INOUE, Hidenori KOBAYASHI, Masashi SUZUKI, Akira MATSUMOTO

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Keywords: pleomorphic adenoma, stereotactic radiosurgery, skull base

JOURNAL OPEN ACCESS

2005 Volume 45 Issue 3 Pages 161-163

DOI https://doi.org/10.2176/nmc.45.161

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Abstract

A 38-year-old man presented with a recurrent pleomorphic adenoma in the parapharyngeal space invading the skull base 19 years after the first operation for a parotid gland tumor. Stereotactic radiotherapy was performed to control the tumor growth using a marginal dose of 8 Gy and maximum dose of 18 Gy with care taken to minimize the dose to nearby structures. The symptoms were reduced within a few months. Magnetic resonance imaging over 5 years showed that the tumor was controlled with no regrowth. Stereotactic radiotherapy is a therapeutic option for the treatment of pleomorphic adenomas.

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