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Qiao's Pathology: Adenocarcinoma In Situ (Bronchioloalveolar Carcinoma), Non-Mucinous Type

Microscopic photo showing a non-mucinous type of bronchioloalveolar carcinoma (adenocarcinoma in situ) with cuboidal tumor epithelial cells that line up along alveolar septa and project into the alveolar spaces. Rare anthracotic pigments are present in alveolar septa. The inset shows the tumor cells are negative for CK-20 IHC stain. Jian-Hua Qiao, MD, FCAP, Los Angeles, CA, USA.

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Uploaded on September 12, 2012
Taken on September 12, 2012