title: Ultrastructure of gastric leiomyosarcoma.
abstract: Samples of gastric leiomyosarcomas from two male patients (69 years and 57 years of age) were studied by electron microscopy. The tumour cells contained abundant 50--90 A thick microfilaments and microtubules. Another cell type, regarded as immature leiomyosarcoma cell, contained numerous profiles of granular endoplasmic reticulum, free ribosomes and a well developed Golgi apparatus. There were intercellular junctions of zonula adherens-type between adjacent tumour cells. It was concluded that electron microscopy offers a valuable aid in the diagnosis of gastric neoplasms of smooth muscle origin.
mesh_terms: D000368:Aged; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D006056:Golgi Apparatus / Q000648:ultrastructure; D006801:Humans; D007365:Intercellular Junctions / Q000648:ultrastructure; D007890:Leiomyosarcoma / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D008870:Microtubules / Q000648:ultrastructure; D008875:Middle Aged; D012270:Ribosomes / Q000648:ultrastructure; D013274:Stomach Neoplasms / Q000648:ultrastructure*