title: Carcinoma ex pleomorphic adenoma mimicking multiple facial nerve schwannoma.
abstract: Carcinoma ex pleomorphic adenoma (CXPA) is a rare, aggressive, poorly understood malignancy that usually occurs in the salivary glands. CXPA has been reported to account for 3.6% of all salivary neoplasms and 11.7% of salivary malignancies. CXPA not only has a low incidence rate but there are few papers or case reports reporting perineural invasion rates. We report a case of CXPA which occurred in the parotid gland, showing retrograde perineural invasion along the facial nerve back to the internal auditory canal (IAC).
authors: Department of Otolaryngology - Head and Neck Surgery, Ulsan University College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea.
authors: Ki Cheol
authors: KC
authors: Park
authors: Hye Jeong
authors: HJ
authors: Choi
authors: Joong Keun
authors: JK
authors: Kwon
mesh_terms: D008949:Adenoma, Pleomorphic / Q000175:diagnosis*; D000328:Adult; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005154:Facial Nerve / Q000473:pathology*; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000175:diagnosis*; D010307:Parotid Neoplasms / Q000175:diagnosis*