title: A case of carcinoid tumor of the middle ear.
abstract: A case of a primary carcinoid tumor of the middle ear is presented. This neoplasm superficially resembles a so-called 'adenomatous' middle ear tumor. The importance of transmission electron microscopy and histochemical staining (Grimelius technique) are discussed.
mesh_terms: D002276:Carcinoid Tumor / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004428:Ear Neoplasms / Q000648:ultrastructure*; D004432:Ear, Middle / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged