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Left Sylvian Fissure Epidermoid Cyst Presenting with Progressive Aphasia

Left Sylvian Fissure Epidermoid Cyst Presenting with Progressive Aphasia

World Neurosurgery 120: 363-367

Epidermoid cysts within the sylvian fissure are extremely rare. Expressive aphasia and neurocognitive dysfunction because of mass effect have never been reported previously. We discuss the case of a 53-year-old male who presented with an acute episode of expressive aphasia and vision changes along with progressive headaches and cognitive slowing over the 2.5 years prior to presentation. A detailed neurologic examination revealed subtle conductive aphasia, as well as mild short-term memory dysfunction. Magnetic resonance imaging revealed a cystic mass consistent with epidermoid cyst within the left sylvian fissure. High-definition fiber tractography showed that the arcuate fasciculus was stretched by the tumor. A left frontotemporal craniotomy allowed for near-total excision of the cyst and led to rapid and complete resolution of symptoms. Although rare, epidermoid cysts of the dominant sylvian fissure can present with progressive aphasia due to mass effect on the arcuate fasciculus. Despite the long-standing symptoms, surgical resection can lead to their complete resolution.

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Accession: 065831008

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PMID: 30172982

DOI: 10.1016/j.wneu.2018.08.164

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