True about histology in infilterating lobular breast carcinoma:: (A) Single file pattern, (B) Pleomorphic cells in sheets, (C) Cribriform pattern, (D) Pin wheel pattern
Answer is A. Ans. (a) Single file pattern(Ref: R 9th/pg 1065; 8th/pg 1085)Lobular carcinoma (invasive) of breast-Histologic hallmark: presence of discohesive infiltrating tumor cells as single cells in single file pattern Q, including signet-ring cells Q containing intracytoplasmic mucin droplets Q