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': 'Ramavati a 40 years old female presented with a progressively increasing lump in the parotid region. On oral examinatious, the tonsil was pushed medially. Biopsy showed it to be pleomorphic adenoma. The appropriate tratment is - \nSelect and explain. \nA. Superficial parotidectomy, B. Lumpectomy, C. Conservative total parotidectomy, D. Enucleation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In this pt. deep lobe of parotid is involved (as suggested by medial displacement of the tonsil) so total parotidectomy is done conserving the facial nerve.\nSchwartz writes- "Benign tumors of the superficial lobe of parotid should be removed with a clear margin by superficial lobectomy. If the deep lobe is involved, total parotidectomy may be required even for benign disease."', 'role': 'assistant'}]