PMCCPMCCPMCC

Search tips
Search criteria 

Advanced

 
Logo of ajneurosurgHomeCurrent issueInstructionsSubmit article
 
Asian J Neurosurg. 2012 Apr-Jun; 7(2): 93–97.
PMCID: PMC3410170
Petrous bone epidermoid cyst caused by penetrating injury to the external ear: Case report and review of literature
Fotios Kalfas, Dinesh Ramanathan, Jeffrey Mai, Seth Schwartz,1 and Laligam N. Sekhar
Department of Neurological Surgery, University of Washington, Seattle, USA
1Department of ENT Surgery, Virginia Mason Hospital, Seattle, Washington, USA
Address for correspondence: Prof. Laligam N. Sekhar, Vice Chairman, Neurological Surgery, University of Washington, USA. E-mail: lsekhar/at/uw.edu
Abstract
Epidermoid cysts are histologically benign, slow-growing congenital neoplasms of the central nervous system that may arise from retained ectodermal implants. The epidermoid lesions are generally caused during the 3rd to 5th week of gestation by an incomplete cleavage of the neural tissue from the cutaneous ectoderm, though it can also happen later in life due to introduction of skin elements by skin puncture, trauma or surgery. We present this unique case of a petromastoid epidermoid cyst associated with ipsilateral cerebellar abscesses, presenting 20 years after a penetrating trauma to the external auditory canal. Radical excision of both lesions and revision of the previous fistulous tract was performed. We present the diagnostic challenge and the operative treatment of this unique case, which to our knowledge is the first where an epidermoid cyst and an adjacent brain abscess occurred as a result of a single traumatic event.
Keywords: Epidermoid cyst, penetrating trauma, petrous bone, surgical treatment
Articles from Asian Journal of Neurosurgery are provided here courtesy of
Medknow Publications