Peripheral Vascular Obstruction in Rheumatoid Arthritis and its Relationship to other Vascular Lesions

Unusual Skin Lesions of Rheumatoid Arthritis

“…Most of the ulcers in our patients developed after the appearance of a cutaneous plaque or nodule which represented a palisading granuloma. Nonulcerated cutaneous lesions, papules or plaques, associated with rheumatoid arthritis are extremely rare but have been recorded in at least two instances [4,12]. Our case 2 presented cutaneous papules indistin guishable clinically and histologically from granuloma annulare.…”

“…Leg ulcerations are quite uncommon but have been documented in several reports [1,2,4,[10][11][12], Some observers [11,12] have reported that the ulcerations are caused by a vasculitis with occlusion of the involved vessels. Rheumatoid arthritis has been associated with an arteritis in skeletal muscle, subcutaneous nodules, synovial tissue, cardiac muscle, nerves, and viscera [5], Laine and Vainio [10] stated that ulcers in their patients were preceeded by cutaneous nodules and biopsies showed features of a palisading granuloma.…”

Medical Eponyms linked to nails

“…Bywaters' lesions are cutaneous infarctions that occur in nail fold and around the nailbeds in patients with rheumatoid arthritis.They are small, brown to purpuric, painless lesions on the nail fold, nail edge, or digital pulp that are transient and often go unnoticed [3][4][5][6]. Bywaters first described them in 1957.…”

Bywater’s Lesions

“…They were first described in 1957 by Bywater and were associated with rheumatoid arthritis [1]. They correspond to non-leucocytoclastic capillaritis and microinfarcts of superficial dermal vessels.…”