| pigmented villonodular 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) |
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| synovitis, pigmented villonodular | Outgrowths of synovial membrane composed of villi and fibrous nodules characterised histologically by haemosiderin- and lipid-containing macrophages and multinucleated giant cells. It usually occurs in the knee. (12 Dec 1998) |
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| villonodular pigmented 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) |
| bursal synovitis | <pathology> Inflammation of a bursa, occasionally accompanied by a calcific deposit in the underlying supraspinatus tendon, the most common site is the subdeltoid bursa. (18 Nov 1997) |
| vaginal synovitis | <pathology> Inflammation of a tendon sheath. (18 Nov 1997) |
| 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) |
| purulent synovitis | Acute inflammation of synovial membranes, with purulent effusion into a joint, due to bacterial infection; the usual route of infection is hemic to the synovial tissue, causing destruction of the articular cartilage, and may become chronic, with sinus formation, osteomyelitis, deformity, and disability. Synonym: purulent synovitis, pyarthrosis, pyogenic arthritis, suppurative synovitis. (05 Mar 2000) |
| serous synovitis | Synovitis with a large effusion of nonpurulent fluid. (05 Mar 2000) |
| suppurative synovitis | Acute inflammation of synovial membranes, with purulent effusion into a joint, due to bacterial infection; the usual route of infection is hemic to the synovial tissue, causing destruction of the articular cartilage, and may become chronic, with sinus formation, osteomyelitis, deformity, and disability. Synonym: purulent synovitis, pyarthrosis, pyogenic arthritis, suppurative synovitis. (05 Mar 2000) |
| synovitis | <orthopaedics, rheumatology> Inflammation of a synovial membrane. It is usually painful, particularly on motion and is characterised by a fluctuating swelling due to effusion within a synovial sac. Synovitis is qualified as fibrinous, gonorrhoeal, hyperplastic, lipomatous, metritic, puerperal, rheumatic, scarlatinal, syphilitic, tuberculous, urethral, etc. (18 Nov 1997) |
| synovitis sicca | Synovitis with little serous or purulent effusion. Synonym: synovitis sicca. (05 Mar 2000) |
| dry synovitis | Synovitis with little serous or purulent effusion. Synonym: synovitis sicca. (05 Mar 2000) |
| infectious synovitis | A disease of chickens and turkeys caused by the bacterium Mycoplasma synoviae and characterised by lameness with swollen hocks and foot pads. (05 Mar 2000) |
| tendinous synovitis | <pathology> Inflammation of a tendon sheath. (18 Nov 1997) |
| filarial synovitis | Synovial inflammation often followed by fibrotic ankylosis due to microfilariae in the joint. (05 Mar 2000) |
| giant pigmented nevus | These large pigmented (often hairy) congenital nevi are important because of their increased risk (10 to 15%) of conversion into malignant melanoma. A biopsy can confirm if cells have turned malignant. Any change in a pre-existing nevus should prompt a physician evaluation. (27 Sep 1997) |