Abstract
We report a case of a 32-year-old male with chronic headaches due to two calcified cerebellar lesions. The patient underwent surgical resection. Under microscopy, the tumour consisted of a calcified mass with prominent fibrillary architecture and associated chondroid matrix. The mass had a distinct interface with adjacent cortex, with areas showing a palisaded rim of epithelioid macrophages mixed with occasional meningeal cells. Immunohistochemistry showed that the palisaded rim of macrophages were CD68 positive and the occasional meningeal cells positive for EMA and PR. The morphology and immunoprofile is consistent with a calcifying pseudoneoplasm of the neuraxis (CAPNON).
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