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alveolar cell carcinoma

 

Definition: a carcinoma, subtype of adenocarcinoma, thought to be derived from epithelium of terminal bronchioles, in which the neoplastic tissue extends along the alveolar walls and grows in small masses within the alveoli; involvement may be uniformly diffuse and massive, or nodular, or lobular; microscopically, the neoplastic cells are cuboidal or columnar and form papillary structures; mucin may be demonstrated in some of the cells and in the material in the alveoli, which also includes denuded cells; metastases in regional lymph nodes, and even in more distant sites, are known to occur, but are infrequent.

Synonym(s): bronchiolar adenocarcinoma, bronchiolar carcinoma, bronchioloalveolar adenocarcinoma, bronchioloalveolar carcinoma, bronchoalveolar carcinoma

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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