This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
Volcano sign is seen in? 
Select and explain. 
A. Leprosy, B. Leishmaniasis, C. Lupus vulgaris, D. DLE
B: Leishmaniasis
Answer: B: Leishmaniasis 
Explanation: Ans. is 'b' i.e., Leishmaniasis Volcano sign* It is descriptive term for the morphologic feature of Old World cutaneous leishmaniasis. The lesion starts as a small nontender papule, which enlarges in size and ulcerates in the centre. The border of the crusted ulcer often has an erythematous rim and is called as "Volcano sign".