| adenoma, villous | An adenoma of the large intestine. It is usually a solitary, sessile, often large, tumour of colonic mucosa composed of mucinous epithelium covering delicate vascular projections. Hypersecretion and malignant changes occur frequently. (12 Dec 1998) |
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| villous | Pubescent, shaggy, covered with fine long hairs, but the hairs not matted. (09 Oct 1997) |
| villous adenoma | <tumour> Appears as a solitary sessile, often large, tumour of colonic mucosa composed of mucinous epithelium covering delicate vascular projections; malignant change occurs frequently; hypersecretion occurs rarely. Also known as adenoma. Synonym: papillary adenoma of large intestine. (05 Mar 2000) |
| villous atrophy | Abnormality of the small intestinal mucosa with crypt hyperplasia, resulting in flattening of the mucosa and the appearance of atrophy of villi; clinically seen in malabsorption syndromes such as sprue. (05 Mar 2000) |
| villous carcinoma | <tumour> A form of carcinoma in which there are numerous, closely packed, papillary projections of neoplastic epithelial tissue. (05 Mar 2000) |
| villous papilloma | <tumour> A papilloma composed of slender, finger-like excrescences occurring in the bladder or large intestine, or from the choroid plexus of the cerebral ventricles; villous papilloma's of the colon are usually sessile and frequently become malignant. Synonym: villous tumour. (05 Mar 2000) |
| villous placenta | A placenta in which the chorion forms villi. (05 Mar 2000) |
| villous tenosynovitis | A condition resembling pigmented villonodular synovitis but arising in periarticular soft tissue rather than in joint synovia; occurs most commonly in the hands. Synonym: villonodular pigmented tenosynovitis. (05 Mar 2000) |
| villous tumour | <tumour> A papilloma composed of slender, finger-like excrescences occurring in the bladder or large intestine, or from the choroid plexus of the cerebral ventricles; villous papilloma's of the colon are usually sessile and frequently become malignant. Synonym: villous tumour. (05 Mar 2000) |
| chronic haemorrhagic villous synovitis | <radiology> Monoarthritis, young adults, erosions on BOTH sides of joint (!), probably inflammatory, haemosiderin deposited in synovium, articular cartilage preserved (despite extensive marginal erosions; similar to gout), NO calcification Differential diagnosis: TB (associated atrophy of muscle and bone), rheumatoid arthritis (symmetrical), synovial sarcoma (with or without calcified; outside joint), synovial osteochondromatosis (12 Dec 1998) |
| muscle cell | <cell biology, pathology> Cell of muscle tissue, in striated (skeletal) muscle it comprises a syncytium formed by the fusion of embryonic myoblasts, in cardiac muscle a cell linked to the others by specialise d junctional complexes (intercalated discs), in smooth muscle a single cell with large amounts of actin and myosin capable of contracting to a small fraction of its resting length. (07 Apr 1998) |
| satellite cell of skeletal muscle | <anatomy> An elongated spindle-shaped cell occupying depressions in the sarcolemma and between it and the basal lamina; believed to play a role in muscle repair and regeneration by fusing with adjacent myofibre. Synonym: sarcoplast. (05 Mar 2000) |
| T-cell-rich, B-cell lymphoma | <tumour> A B-cell lymphoma in which more than 90% of the cells are of T-cell origin, masking the large cells that form the neoplastic B-cell component. See: adult T-cell lymphoma. (05 Mar 2000) |
| abdominal external oblique muscle | <anatomy, muscle> Origin, fifth to twelfth ribs; insertion, anterior half of lateral lip of iliac crest, inguinal ligament, and anterior layer of the rectus sheath; action, diminishes capacity of abdomen, draws thorax downward; nerve supply, thoracoabdominal nerves. Synonym: musculus obliquus externus abdominis, abdominal external oblique muscle. (05 Mar 2000) |
| abdominal internal oblique muscle | <anatomy, muscle> Origin, iliac fascia deep to lateral part of inguinal ligament, anterior half of crest of ilium, and lumbar fascia; insertion, tenth to twelfth ribs and sheath of rectus; some of the fibres from inguinal ligament terminate in the conjoint tendon; action, diminishes capacity of abdomen, flexes lumbar vertebral column (bends thorax forward); nerve supply, lower thoracic. Synonym: musculus obliquus internus abdominis, abdominal internal oblique muscle. (05 Mar 2000) |