Neurosarcoidosis presenting as an incidental solitary cranial ring-enhancing lesion

Michael Thambuswamy, Ashish H Shah, Mai Tran, Joanne T Thambuswamy, Amade Bregy, Michael D Norenberg, Ricardo J Komotar

Asian Journal of Neurosurgery 2017 12(3):544-546

Isolated neurosarcoidosis without prior systemic symptoms is extremely rare, occurring in approximately 2% of patients with neurosarcoidosis. Due to its rarity, mistakes in diagnosis and treatment occur commonly. We present a case of a 47-year-old female who was found to have an incidentally discovered solitary intracranial lesion that mimicked a high-grade neoplasm, but was later confirmed to be neurosarcoidosis. Incidental solitary neurosarcoid granulomas are difficult to diagnose due to its nonspecific clinical and imaging presentations. Early diagnosis by biopsy in these rare incidental cases remains paramount for adequate treatment.

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