This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Surgery, Subject name: Surgery
[{'content': 'A 17 year old female underwent FNAC for a lump in the breast which was non-tender, firm and mobile. Histopathology reveals tightly arranged ductal epithelial cells with dyscohesive bare nuclei . What is the diagnosis ? \nSelect and explain. \nA. DCIS, B. Fibroadenoma, C. Phyllodes tumour, D. LCIS', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Phyllodes- leaf like appearance on cut section . Dual origin of mammary epithelium and connective tissue (stroma) LCIS - Indian File Pattern DCIS - may show cribriform , comedo or papillary growth patterns . Tightly arranged epithelial cells with discohesive bare nuclei are suggestive of benign breast disease likely Fibroadenoma *', 'role': 'assistant'}]