title: Light and electron microscopic studies of a case of middle ear adenoma.
abstract: An adenomatous neoplasm from the middle ear was studied. Two distinct groups of cells were present. Electron microscopy suggested that one group was epithelial and the other neuroendocrine in origin. The features supported the hypothesis that such tumors arise from middle ear mucosa.
mesh_terms: D000236:Adenoma / Q000473:pathology / Q000648:ultrastructure*; D000328:Adult; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004428:Ear Neoplasms / Q000473:pathology / Q000648:ultrastructure*; D004432:Ear, Middle; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D007365:Intercellular Junctions / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D009077:Mucins / Q000032:analysis
chemical_list: D009077:Mucins