Not a premalignant ulcer:
Bazin's ulcer
Pagets disease of nipple
Marjolin's ulcer
Lupus vulgaris
Ans: a (Bazin's ulcer)Ref: Bailey & Love, 24th ed, p. 208 for 'c' p. 1837 for 'b'& 23rd ed, p. 148 for 'c' p. 181 for 'd' S. Das surgery, 3rd ed, p. 129 for 'a' p. 130 for 4d'
Neoplasia