| MPM | malignant papillary mesothelioma; medial pterygoid muscle; minor psychiatric morbidity; multiple pri... |
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| OPM | occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine |
| PACC | primary ambulatory care center; promoting aphasics' communicative competence |
| PAD | pain and distress; patient surface axis depth; percutaneous abscess drainage; percutaneous automated... |
| PAGMK | primary African green monkey kidney |
| primary HIV infection | <infectious disease> The flu-like syndrome that oc immediately after a person contracts HIV. This mini infection precedes seroconversion and is characterised fever, sore throat, headache, skin rash and swollen glands. (06 Mar 1998) |
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| primary homonym | <zoology> Each of two or more identical species names, which, at the time of original publication, were proposed in combination with the same generic name i.e. The species were named for different, though homonymous genera. See: Homonym. (09 Jan 1998) |
| primary hydrocephalus | Hydrocephalus due to a developmental defect of the brain. Synonym: primary hydrocephalus. (05 Mar 2000) |
| primary hyperoxaluria and oxalosis | A metabolic disorder characterised by calcium oxalate nephrocalcinosis and nephrolithiasis, extrarenal oxalosis, and increased urinary output of oxalic and glycolic acids; usually evident clinically in the first decade of life, with progressive renal failure and uraemia; autosomal recessive inheritance. Type I is due to an alteration in alanine:glyoxylate aminotransferase; type II is due to an alteration in d-glycerate dehydrogenase. (05 Mar 2000) |
| primary hyperparathyroidism | Hyperparathyroidism due to neoplasms or idiopathic hyperplasia of the parathyroid glands. (05 Mar 2000) |
| primary hypertension | Hypertension without known cause. Synonym: idiopathic hypertension, primary hypertension. (05 Mar 2000) |
| primary hyperthyroidism | Hyperthyroidism due to a disorder originating within the thyroid gland, in contrast to one of pituitary origin; may be due to generalised overactivity of the gland, to a localised hyperactive nodule, or to circulating antibody, which stimulates the gland (long-acting thyroid stimulator). (05 Mar 2000) |
| primary hypogammaglobulinaemia | Hypogammaglobulinaemia due to a primary immunodeficiency of immunoglobulin-forming cells (B-lymphocytes). (05 Mar 2000) |
| primary hypogonadism | Defective gonadal development or function, or both, due to abnormality or loss of the gonad itself. (05 Mar 2000) |
| primary idiopathic macular atrophy | Atrophoderma in which the skin becomes bag like and wrinkled. Synonym: atrophia maculosa varioliformis cutis, atrophoderma maculatum, macular atrophy, primary idiopathic macular atrophy, primary macular atrophy of skin. Origin: G. Anetos, relaxed, + derma, skin (05 Mar 2000) |
| primary immune response | <immunology> The immune response to the first challenge by a particular antigen. Usually less extensive than the secondary immune response, being slower and shorter lived with smaller amounts of lower affinity antibody being produced. (18 Nov 1997) |
| primary interatrial foramen | In the embryonic heart, the temporary opening between right and left atria situated between the lower margin of the septum primum and the atrioventricular canal cushions, in an adult heart, the abnormal persistence of the so-named communication which is normal in young embryos. Synonym: foramen subseptale, ostium primum, primary interatrial foramen. (05 Mar 2000) |
| primary labial groove | A furrow between the developing lip and gum. Synonym: labiodental sulcus, lip sulcus, primary labial groove. (05 Mar 2000) |
| primary lateral sclerosis | Considered by many to be a subgroup of motor neuron disease; a slowly progressive degenerative disorder of the motor neurons of the cerebral cortex, resulting in widespread weakness on an upper motor neuron basis; spasticity, hyperreflexia, and Babinski signs are present, but not fasciculation potentials, nor any electrodiagnostic evidence of a lower motor neuron lesion. Synonym: lateral spinal sclerosis. (05 Mar 2000) |
| primary lymphedema | A form of lymphedema observed chiefly in young women and girls, characterised by diffuse swelling of the lower extremities. Synonym: lymphedema praecox. (05 Mar 2000) |