| Mason operation | Surgical procedure in which the stomach is transected high on the body. The resulting proximal remnant is joined to a loop of the jejunum in an end-to-side anastomosis. This procedure is used frequently in the treatment of morbid obesity. (12 Dec 1998) |
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| gareis-mason syndrome | <syndrome> An inherited (genetic) syndrome with characteristic features including (1) neurologically: mental retardation and aphasia (lack of speech); (2) limbs: adducted (clasped) thumbs, absent extensor pollicis longus and/or brevis muscles to the thumb, shuffling gait, and leg spasticity; (3) growth: small body size; (4) skeleton: lumbar lordosis (sway back). The syndrome is inherited as an X-linked trait and so affects mainly boys. Alternative names include MASA syndrome (MASA stands for mental retardation, aphasia, shuffling gait, and adducted thumbs), clasped thumb and mental retardation, congenital clasped thumb with mental retardation, and adducted thumb with mental retardation. (12 Dec 1998) |
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| mason | 1. One whose occupation is to build with stone or brick; also, one who prepares stone for building purposes. 2. A member of the fraternity of Freemasons. See Freemason. <zoology> Mason bee, any wasp that constructs its nest, or brood cells, of hardened mud. The female fills the cells with insects or spiders, paralysed by a sting, and thus provides food for its larvae Origin: F. Maon, LL. Macio, machio, mattio, mactio, marcio, macerio; of uncertain origin. Source: Websters Dictionary (01 Mar 1998) |
| mason-pfiser monkey virus | The type species of type d retroviruses (retroviruses, type d) isolated from mammary carcinoma and normal tissues in rhesus monkeys. It appears to have evolved from a recombination between a murine b oncovirus and a primate c oncovirus related to the baboon endogenous virus. Mpmv induces simian aids (saids). (12 Dec 1998) |
| Mason-Pfiser virus | A D-type retrovirus in the subfamily Oncornaviridae that was isolated from a mammary carcinoma of a rhesus monkey. (05 Mar 2000) |
| mason's lung | Silicosis occurring in stone masons. (05 Mar 2000) |
| Parker, Edward Mason | <person> U.S. Surgeon, 1860-1941. See: Parker-Kerr suture. (05 Mar 2000) |
| Wyburn-Mason, Roger | <person> British physician. See: Wyburn-Mason syndrome. (05 Mar 2000) |
| Wyburn-Mason syndrome | <syndrome> Arteriovenous malformation on the cerebral cortex, retinal arteriovenous angioma and facial nevus, usually occurring in mentally retarded individuals. (05 Mar 2000) |
| stone-mason's disease | Inflammation of the lung caused by foreign bodies (inhaled particles of silica): leads to fibrosis but unlike asbestosis does not predispose to neoplasia. (18 Nov 1997) |
| syndrome, gareis-mason | See Syndrome, MASA. (12 Dec 1998) |
| Abbe operation | Use of an Abbe flap in plastic surgery of the lips. (05 Mar 2000) |
| Arie-Pitanguy operation | A procedure to reduce a large breast by a lozenge-shaped resection of tissue from its inferior pole. Synonym: Arie-Pitanguy mammaplasty. (05 Mar 2000) |
| Arlt's operation | Transplantation of the eyelashes back from the edge of the lid in trichiasis. (05 Mar 2000) |
| arterial switch operation | Operation for complete transposition of the great arteries; the most common way to repair this defect consists of switching the aorta and pulmonary arteries and implanting the coronary arteries into the neoaorta (the original pulmonary artery). (05 Mar 2000) |
| Baldy's operation | An obsolete operation for retrodisplacement of the uterus, consisting of bringing the round ligaments through the perforated broad ligaments and attaching them to each other and to the back of the uterus. Synonym: Webster's operation. (05 Mar 2000) |