title: Benign clear cell tumor of the lung in an 8-year-old girl.
abstract: A case of "benign clear cell tumor of the lung" occurred in an 8-year-old girl. The tumor was a solid well-circumscribed mass, measuring 1 cm in diameter. Histologically, it consisted of polygonal cells intermingled with large, thin-walled vessels. Glycogen was scarce in paraffin sections; however, electron microscopic observation revealed a large amount of glycogen. Intracytoplasmic filaments were not observed, but scattered pinocytotic vesicles and plaquelike densities along the plasma membrane were found.
mesh_terms: D000230:Adenocarcinoma / Q000098:blood supply / Q000473:pathology* / Q000648:ultrastructure; D002648:Child; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000098:blood supply / Q000473:pathology* / Q000648:ultrastructure