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Updated: Jul 11, 2026

Identifying, Diagnosing, and Grading Malignant Peripheral Nerve Sheath Tumors in Genetically Engineered Mouse Models
Published on: May 17, 2024
Carcinoma ex pleomorphic adenoma mimicking multiple facial nerve schwannoma
Ki Cheol Park1, Hye Jeong Choi, Joong Keun Kwon
1Department of Otolaryngology - Head and Neck Surgery, Ulsan University College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea.
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).
