Fungus cerebri (brain fungus): a rare complication of mastoidectomy.

Fungus cerebri is a relatively rare disease. The various reasons attributed to such pathology are, long standing mastoiditis, previous temporal lobe fracture, spontaneous herniation and most important common cause is post operative to mastoidectomy. The diagnosis is mainly clinical and supplemented by imaging studies. The commonly herniated part is the temporal lobe, but cerebellar herniation are also reported Different surgical modalities are used in managing this condition. Surgical approaches in the treatment of brain herniation into the mastoid or middle ear are, neurosurgical, otosurgical and combined. A case of fungus cerebri complicating mastoidectomy is presented and the pathogenesis is discussed.