This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Moh's micrographic excision for basal cell carcinoma is used for all of the following except - \nSelect and explain. \nA. Recurrent Tumour, B. Tumor less than 2 cm in diameter, C. Tumors with aggressive histology, D. Tumors with perineural invasion", 'role': 'user'}, {'content': 'Answer: B \nExplanation: • Mohs’ technique uses serial excision in small increments coupled with immediate microscopic analysis to ensure tumor removal, yet limit resection of aesthetically valuable tissue.\n• Advantage: All specimen margins are evaluated.\n• Major benefit: Ability to remove a tumor with minimal sacrifice of uninvolved tissue.\n• Particular value in managing tumors of the eyelid, nose, or cheek\n• Indicated in large, aggressive tumors located at vital areas or recurrent tumors\n• Major drawback: Procedure length (Total lesion excision may require multiple attempts at resection, and many procedures may be carried out over several days)\n• Recurrence and metastases rates are comparable to those of wide local excision.', 'role': 'assistant'}]