Carcinoma ex pleomorphic adenoma
Carcinoma ex pleomorphic adenoma
Updated: 02/13/2021
© Jun Wang, MD, PhD
General features
- Develops in association with benign primary or recurrent pleomorphic adenoma
- More common in older population
- History of previous pleomorphic
adenoma required for diagnosis, unless co-existing pleomorphic
adenoma identified
Clinical features
- Sudden increase in growth, pain or facial paralysis, facial tingling, trismus
- Likely recur, metastasis
Pathological features
- Infiltrating tumor with hemorrhage or necrosis
- Malignant components in the background of pleomorphic adenoma
- Most common adenocarcinoma with irregular glands, atypical cells, necrosis, active mitosis, etc
Management
- Surgery
- Radiotherapy, chemotherapy, possibley WT1 based immunotherapy, etc
- Prognosis depends on extent, staging, grade, etc
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