Spot the diagnosis -97

(1) A chain smoker has developed dry gangrene of his big toe of his right foot .

(2) A diabetic patient has developed wet gangrene of the toes.

(3) An old patient has developed gangrene of his toes . He is neither a smoker nor a diabetic .

(4) A young Lady has come with elevation of the skin on the upper chest which is butterfly shaped and pinkish.

Answers

(2) Diabetic gangrene .

(3) Senile gangrene .

(1) Buerger's disease .

(4) Keloid .