adenoid cystic carcinoma
Definition: a histologic type of carcinoma characterized by large epithelial masses containing round, glandlike spaces or cysts that frequently contain mucus or collagen and are bordered by several layers of epithelial cells without intervening stroma, forming a cribriform pattern like a slice of Swiss cheese; perineural invasion and hematogenous metastasis are common; occurs most commonly in salivary glands and skin.
Synonym(s): cylindromatous carcinoma
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