Abstract
Lepidic growth adenocarcinoma is defined as tumor cells proliferating along the surface of intact alveolar walls without stromal or vascular invasion pathologically (1). Travis et al . (2) proposed a classification of lung adenocarcinoma based on the International Association for the Study of Lung Cancer (IASLC), the American Thoracic Society (ATS), and the European Respiratory Society (ERS) recommendations. They did not use the terms bronchioloalveolar carcinoma or mixed subtype, and they classified adenocarcinoma in situ (AIS) as pure lepidic growth, and minimally invasive adenocarcinoma (MIA) as predominant lepidic growth containing invasion foci of less than 5 mm for small (less than 3 cm) solitary adenocarcinomas.In addition, invasive lepidic predominant adenocarcinoma (LPA) was defined as a lepidic growth containing invasion foci of more than 5 mm. They described that solitary adenocarcinomas with pure lepidic growth, termed “AIS”.
We report the case of a young patient who had no medical history and presented to the ER with acute dyspnea and cough.