title: Benign clear cell tumor of lung with necrosis.
abstract: A case of benign clear cell tumor ("sugar tumor") of the lund with extensive necrosis is reported. Electron microscopic study established the diagnosis by virtue of the characteristic cytoplasmic membrane-bound glycogen. Ultrastructural study may be necessary in cases containing necrosis to differentiate this lesion decisively from metastatic renal cell carcinoma.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology; D000368:Aged; D003593:Cytoplasm / Q000032:analysis; D003937:Diagnosis, Differential; D005260:Female; D006003:Glycogen / Q000032:analysis; D006801:Humans; D008175:Lung Neoplasms / Q000032:analysis / Q000473:pathology*; D009336:Necrosis / Q000473:pathology; D009362:Neoplasm Metastasis
chemical_list: D006003:Glycogen