Clear cells are most frequently encountered in which of the listed lesions?
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Answer: C. Mucoepidermoid
Explanation
Clear cells are a characteristic histopathological feature frequently encountered in mucoepidermoid carcinoma. These glycogen-rich clear cells can predominate in certain histological variants of the tumor. Pathologists identify clear cells to confirm mucoepidermoid carcinoma diagnoses during biopsies. Mucoepidermoid carcinomas exhibit variable cellular composition including mucous, epidermoid, and clear cells. Clear cell variant tumors can mimic other clear cell neoplasms of salivary gland origins. Histochemical stains for glycogen help differentiate clear cells from other mucin-containing structures.
Recognizing clear cell features ensures accurate histological grading and treatment planning. Pathologists perform specialized mucin stains to confirm cellular differentiation in difficult biopsies. Surgical oncologists rely on accurate grading to determine the necessity of neck dissection. Pleomorphic adenomas contain epithelial and myoepithelial cells in chondromyxoid stroma. Warthin tumors feature double-layered eosinophilic oncocytic epithelial cells and lymphoid stroma. Adenomatoid odontogenic tumors show duct-like structures and spindle-shaped epithelial cells.
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