Turkish Neurosurgery 2010 , Vol 20 , Num 2
Cemento-Ossifying Fibroma Presenting as a Posterior Fossa Mass Lesion
Ritesh KANSAL1, Arpit SHARMA2, Ninad GAIKWAD3, Amit MAHORE4, Atul GOEL5
1,4,5Department of Neurosurgery, King Edward Memorial Hospital, Parel, Mumbai, INDIA
2,3Department of Otolaryngology, King Edward Memorial Hospital, Parel, Mumbai, INDIA
DOI : 10.5137/1019-5149.JTN.2327-09.0 Cemento-ossifying fibromas are benign lesions of the jaw, which arise from the periodontal membrane. Histopathologically these are composed of fibrous tissues with calcified structures resembling bone and cementum. Surgical resection is the treatment of choice. They have rarely been reported in the ethmoid sinus, maxillary sinus and sphenoid sinus Mastoid bone is an extremely rare site of such tumors. Only one case of cemento-ossifying fibroma of petromastoid bone has been reported before. We present a case of cementoossifying fibroma involving the petromastoid bone, with the large intracranial component causing compression on the cerebellum. This unique case may provide insight into the etiopathogenesis of these tumors. Keywords : Cemento-ossifying fibroma, Petromastoid bone, Cerebellar signs
Corresponding author : Ritesh Kansal, drkansal@yahoo.co.in