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Avascular necrosis

(Science: radiology) aetiology (plastic RAGS): P pancreatitis, L lupus, a alcohol, s steroids, t trauma, i idiopathic, infection, c caisson disease, collagen vascular disease, R radiation, rheumatoid arthritis, a amyloid, g gaucher disease, s sickle cell disease findings: sclerosis, crescent sign, collapse (e.g., of femoral head) see also: staging