Bilateral cerebellopontine angle lipoma in an asymptomatic patient: a case report

Year 2009, Volume: 19 Issue: 2, 106 - 108, 12.03.2009

Tarkan Ergün Hatice Lakadamyalı Suat Avcı

Abstract

We present here an asymptomatic case of a bilateral cerebello-pontine angle lipoma incidentally diagnosed by magnetic resonance imaging. Intracranial lipomas are rare and comprise just 0.1-1.5% of all intracranial tumors, and are mostly located in the corpus callosum. Cerebello-pontine angle CPA or internal acoustic canal IAC locations, on the other hand, are rather rare, and usually unilateral. Bilateral locations, as with the case presented here, were reported in only three cases in the literature. Cerebello-pontine angle and IAC lipomas typically infiltrate the neighboring cranial nerves 5, 7 and 8 , causing progressive neurological deficits in 95% of cases. However, cases of bilateral CPA/IAC lipomas similar to this case are interesting because of their being asymptomatic.

Keywords

Cerebral cortex, cerebellopontine angles, lipoma, magnetic resonance imaging, tumor

Asemptomatik hastada iki taraflı serebellopontin köşede lipom: Olgu sunumu

Abstract

Bu yazıda manyetik rezonans görüntüleme ile tesa- düfen saptanan, iki taraflı serebellopontin köşede yerleşik asemptomatik bir lipom olgusu sunuldu. İntrakraniyal lipom, intrakraniyal tümörlerin yalnız- ca %0.1-1.5’ini oluşturan nadir bir tümördür. En sık korpus kallozumda yer alır. Serebellopontin köşede SPK ya da internal akustik kanalda İAK yerleşim ise oldukça nadirdir. Genellikle bu yerleşim yerinde tek taraflı olarak izlenir. İki taraflı yerleşim ise bizim bilgilerimize göre bundan önce literatürde yalnızca üç olguda bildirilmiştir. Serebellopontin köşede ve İAK’de yerleşik lipom tipik olarak komşu kraniyal sinirleri 5., 7. ve 8. sinir infiltre ederek %95 hastada ilerleyici nörolojik defisitlere neden olur. Ancak bizim olgumuz- da olduğu gibi iki taraflı yerleşimli tüm SPK/İAK lipom olgularında hastaların asemptomatik olması ilginçtir

Keywords

Serebral korteks, serebellopontin açı, lipom, manyetik rezonans görüntüleme, tümör

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