title: Systemic mastocytosis and the mastocytosis syndrome.
abstract: A patient with extensive systemic mastocytosis and the mastocytosis syndrome was studied by light and electron microscopy. Mast cell proliferation was found in the bone marrow, the liver, spleen and lymph node. In addition, the patient had telangiectasia macularis eruptiva perstans and elevated histamine levels.
mesh_terms: D001853:Bone Marrow / Q000473:pathology; D006632:Histamine / Q000378:metabolism; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D012867:Skin / Q000473:pathology / Q000648:ultrastructure; D013577:Syndrome; D014582:Urticaria Pigmentosa / Q000378:metabolism / Q000473:pathology*
chemical_list: D006632:Histamine