system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Single file pattern is seen in breast cancer type?
assistant
The correct answer is  Ans. is 'b' i.e. Infiltrating lobular "The hisological hallmark of lobular carcinomas is the pattern of single infiltrating tumor cells, often only one cell in width (in the form of a single file) or in loose clusters or sheets."