Question
A 50 year old male patient presented with a parotid swelling.Histopathological examination of the swelling shows the following features.What can be the most probable diagnosis?
A. Mucoepidermoid Carcinoma
B. Adenoid Cystic Carcinoma
C. Pleomorphic Adenomma
D. Warthin’s Tumor
Show Answer
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Correct Answer » B
Explanation
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Ans:B. Adenoid Cystic Carcinoma
Adenoid Cystic Carcinoma (Cylindroma)
- This is a highly malignant tumour due to its typical infiltrative nature, especially along the nerve sheaths.
- Adenoid cystic carcinoma is histologically characterised by cribriform appearance i.e. the epithelial tumour cells of duct-lining and myoepithelial cells are arranged in duct-like structures or masses of cells, having typical fenestrations or cyst-like spaces and hence the name ‘adenoid cystic’.
- These cystic spaces contain PAS-positive basophilic material .
