Giant cell tumor of the clivus with presence of epithelioid histiocytes.

Giant cell tumor (GCT) is a benign neoplasm but locally aggressive tumor that uncommonly involves the skull bone. We report a case of a 62-year-old male presented with increasing headache and diplopia. Investigations were suggestive of an expanding mass lesion of the clivus. Histopathology was suggestive of diagnosed with GCT with abundant histiocytes.