Ultrastructural comparison of "alveolar" and "solid" areas in bronchioloalveolar carcinoma.
2002
The purpose of this study was to compare the ultrastructural features of bronchioloalveolar carcinomas, contrasting the well-differentiated alveolar component and the poorly-differentiated solid component in the same tumor. We studied 7 cases of non-mucinous bronchioloalveolar carcinomas by electron microscopy. Two of these cases showed lamellar bodies in both the alveolar and solid components and the remaining 5 cases revealed Clara cell granules in both components. We conclude that the neoplastic cells in bronchioloalveolar carcinoma retain their ultrastructural phenotypes after becoming invasive carcinoma with loss of alveolar differentiation.
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