[On understanding purpura reactions above arteriovenous anastomoses close to the skin].
D000798:Angiomatosis; D001163:Arteriovenous Anastomosis; D001164:Arteriovenous Fistula; D001166:Arteriovenous Shunt, Surgical; D006801:Humans; D011693:Purpura; D012867:Skin
ANGIOMATOSIS; FISTULA, ARTERIOVENOUS; PURPURA