| PSA | parasternal short axis; pleomorphic salivary gland adenoma; polyethylene sulfonic acid; polysacchari... |
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| PA | Psoriatic Arthritis |
|---|---|
| PsA | Psoriatic Arthritis |
| arthritis, psoriatic | Joint inflammation associated with psoriasis. (12 Dec 1998) |
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| psoriatic | Relating to psoriasis. Synonym: psoriasic. (05 Mar 2000) |
| psoriatic arthritis | <radiology> Types: true psoriatic arthritis (1/3), resembling rheumatoid arthritis (1/3), combination of psoriatic and RA (1/3) findings: no juxta-articular osteoporosis (unlike RA), periosteal reaction frequent, assymetrical destruction of DIP with ankylosis, resorption of terminal tufts with pencil in cup deformity, ivory phalanx, destruction of 1st toe IP joint with periosteal reaction and bony proliferation at distal phalangeal base (pathognomonic), assymetrical syndesmophytes (lower C- to upper lumbar spine), squaring of vertebrae in lumbar spine, paravertebral soft tissue calcifications, bilateral assymetrical sacroiliitis associated with HLA B-27 antigen, negative rheumatoid factor (12 Dec 1998) |
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