Papillary Adenoma of Type 2 Pneumocytes in the Lung

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概要

• 論文の詳細を見る

• Recent developments in radiologic imaging and thoracoscopic excision techniques have increased the possibility of encountering small, benign or premalignant tumors in the lung. In this report, we describe a rare case of papillary adenoma of type 2 pneumocytes. A 51-year-old Japanese woman was hospitalized following a traffic accident. Helical CT scan of the chest incidentally detected a nodular ground-glass opacity measuring 8 mm in diameter at the subpleural region of left lung. The nodule was thoracoscopically resected out. Light microscopic examination demonstrated a noninfiltrative tumor consisting of cuboidal cells covering fibrovascular cores; thus, the tumor exhibited a branching papillary appearance. The cuboidal cells showed little nuclear atypia. Mitotic figures, necrosis, and intercellular mucin were absent. The cytoplasm was immunohistochemically stained for surfactant apoprotein A and cytokeratin, though not for carcinoembryonic antigen (CEA), epithelial membrane antigen (EMA), or S100 protein. The morphologic and immunohistochemical findings fulfilled the criteria of papillary adenoma of type 2 pneumocytes.

• 長崎大学の論文

著者

• Higami Yoshikazu

  First Department Of Pathology Nagasaki University School Of Medicine

• Higami Yoshikazu

  First Department Of Pathology Nagasaki University

• Higami Yoshikazu

  First Department Of Pathology Nagasaki University School Of Medicin Of Medicine

• Yamasaki Naoko

  First Department Of Pathology Nagasaki University School Of Medicin Of Medicine

• Inada Masataka

  First Department of Pathology, Nagasaki University School of Medicine

• Inada Masataka

  First Department Of Pathology Nagasaki University School Of Medicine

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