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Mastocytosis
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D008415 |
[A heterogenous group of disorders characterized by the abnormal increase of MAST CELLS in only the skin (MASTOCYTOSIS, CUTANEOUS), in extracutaneous tissues involving multiple organs (MASTOCYTOSIS, SYSTEMIC), or in solid tumors (MASTOCYTOMA).
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Mastocytosis, Cutaneous
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D034701 |
[A form of cutaneous mastocytosis that is characterized by the large fluid-filled lesions.
, Skin lesions due to abnormal infiltration of MAST CELLS. Cutaneous mastocytosis is confined to the skin without the involvement of other tissues or organs, and is mostly found in children. The three major variants are: URTICARIA PIGMENTOSA; diffuse cutaneous mastocytosis; and SOLITARY MASTOCYTOMA OF SKIN.
, A form of cutaneous mastocytosis that is characterized by a diffuse erythrodermic rash rather than the maculopapular infiltrates seen in URTICARIA PIGMENTOSA.
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Mastocytosis, Systemic
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D034721 |
[A form of systemic mastocytosis in which patients experience no pain. It is characterized by the multifocal mast cell filtrates, mostly in skin and bone marrow (<20% MAST CELLS). It has a low cytomorphological grade.
, A group of disorders caused by the abnormal proliferation of MAST CELLS in a variety of extracutaneous tissues including bone marrow, liver, spleen, lymph nodes, and gastrointestinal tract. Systemic mastocytosis is commonly seen in adults. These diseases are categorized on the basis of clinical features, pathologic findings, and prognosis.
, A form of systemic mastocytosis in which patients have impaired organ functions due to multifocal infiltrates of pathological MAST CELLS in bone marrow, liver, spleen, gastrointestinal tract, or skeletal system. The cytomorphology shows a low to high grade.
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Mastodons
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D056666 |
[An extinct genus of large mammals in the family Mammutidae, that fed by browsing on tall plants. Eurasian species died out three million years ago, but some specimens of the American Mastodon survived the last Ice Age.
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Mastodynia
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D059373 |
[Pain in the breast generally classified as cyclical (associated with menstrual periods), or noncyclical, i.e. originating from the breast or nearby muscles or joints, ranging from minor discomfort to severely incapacitating.
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Mastoid
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D008416 |
[The posterior part of the temporal bone. It is a projection of the petrous bone.
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Mastoidectomy
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D000074406 |
[Surgical removal of the diseased cells from the MASTOID PROCESS. It often involves simultaneous resection and/or repair of the MIDDLE EAR and EAR DRUM in MIDDLE EAR CHOLESTEATOMAS and MASTOIDITIS.
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Mastoiditis
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D008417 |
[Inflammation of the honeycomb-like MASTOID BONE in the skull just behind the ear. It is usually a complication of OTITIS MEDIA.
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Masturbation
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D008418 |
[Sexual stimulation or gratification of the self.
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Matched-Pair Analysis
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D016555 |
[A type of analysis in which subjects in a study group and a comparison group are made comparable with respect to extraneous factors by individually pairing study subjects with the comparison group subjects (e.g., age-matched controls).
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Materia Medica
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D008419 |
[Materials or substances used in the composition of traditional medical remedies. The use of this term in MeSH was formerly restricted to historical articles or those concerned with traditional medicine, but it can also refer to homeopathic remedies. Nosodes are specific types of homeopathic remedies prepared from causal agents or disease products.
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Material Safety Data Sheets
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D063967 |
[Information or data used to ensure the safe handling and disposal of substances in the workplace. Such information includes physical properties (i.e. melting, boiling, flashing points), as well as data on toxicity, health effects, reactivity, storage, disposal, first-aid, protective equipment, and spill-handling procedures.
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Materials Management, Hospital
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D008421 |
[The management of all procurement, distribution, and storage of equipment and supplies, as well as logistics management including laundry, processing of reusables, etc.
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Materials Science
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D000074266 |
[An interdisciplinary study of the microstructure and composition of various materials such as metals, semiconductors, ceramics, and polymers, in relation to their macromolecular physical and chemical properties. Materials science enables the custom creation of new materials with specific properties and uses.
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Materials Testing
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D008422 |
[The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
, The testing of BIOCOMPATIBLE MATERIALS, especially those used for EXTRACORPOREAL CIRCULATION; STENTS; or ARTIFICIAL ORGANS, for properties that allow contact with flowing BLOOD without causing adverse reactions such as THROMBOSIS; HEMOLYSIS; COMPLEMENT ACTIVATION; or INFLAMMATION.
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Maternal Age
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D008423 |
[The age of the mother in PREGNANCY.
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Maternal Behavior
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D008425 |
[The behavior patterns associated with or characteristic of a mother.
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Maternal Death
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D063130 |
[The death of the female parent.
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Maternal Deprivation
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D008426 |
[Prolonged separation of the offspring from the mother.
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Maternal Exposure
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D018811 |
[Exposure of the female parent, human or animal, to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals that may affect offspring. It includes pre-conception maternal exposure.
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