Mastocytosis, one of the mast cell diseases, is a rare disorder of both children and adults caused by the presence of too many mast cells (mastocytes) and CD34+ mast cell precursors. People affected by masyocytosis are susceptible to itching, hives, and anaphylactic shock, caused by the release of histamine from mast cells. The current classificat...
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http://en.wikipedia.org/wiki/Mastocytosis
<radiology> Proliferation of mast cells, seen in haematopoietic regions of skeleton, sclerotic bone lesions, diffuse, patchy sclerosis, discrete, irregular, sclerotic nodules, rarely lytic lesions with densely sclerotic margins, mast cells elaborate histamine producing flushing, tachycardia, nausea, diarrhoea, pigmented, pruritic rash (urtica...
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http://www.encyclo.co.uk/local/20973
(mas″to-si-to´sis) an accumulation, local or systemic, of mast cells in the tissues; known as urticaria pigmentosa when widespread in the skin. diffuse mastocytosis , diffuse cutaneous mastocytosis a condition in which the entire skin is thickened, lichenified, and ...
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http://www.encyclo.co.uk/local/21001
Type: Term Pronunciation: mas′tō-sī-tō′sis Definitions: 1. Abnormal proliferation of mast cells in a variety of tissues; may be systemic, involving a variety of organs, or cutaneous (urticaria pigmentosa).
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http://www.medilexicon.com/medicaldictionary.php?t=53080
Mastocytosis: A condition characterized by infiltration of mast cells into the tissues of the body. Mast cells are connective tissue cells which release chemicals including histamine that are very irritating and cause itching, swelling, and fluid leakage from cells. There are several different clinical forms of mastocytosis, including: Mastocytoma ...
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http://www.medterms.com/script/main/art.asp?articlekey=32728
Abnormal infiltration of mast cells into a body tissue.
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http://www.thehorse.com/Glossary.xhtml?L=M
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