“…Summary Ten cases of rheumatoid arthritis have been described, which showed vessel obliteration associated with symptoms ranging from small infarcts, presenting as brown lesions of the nail-fold, nail-edge, or digital pulp, to gangrene of all four limbs with visceral lesions. This is not thought to represent polyarteritis nodosa or Buerger's disease, but to resemble more closely the arterial changes seen in scleroderma and lupus erythematosus, and perhaps also the changes described as "remittent necrotizing acrocyanosis" (Edwards, 1956) or "nonspecific obliterative angiitis" (Pennock and Primas, 1956). None showed the ordinary symptoms of Buerger's disease, although all except one were ambulant.…”