A large invasive chondroblastoma on the temporomandibular joint and external auditory canal: a case report and literature review

摘要

Preoperative computed tomography A coronal view shows erosion of the skull base temporal bone and the moth-eaten appearance of the right mandible neck. The mild thickening of the tympanic membrane (B, arrow) and fluid collection in the external auditory canal (C, arrow) were tentatively diagnosed as external otitis due to an error in the interpretation of the images. Preoperative magnetic resonance imaging D coronal view shows an inhomogeneous, multi-lobulated mass with an intermediate signal