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': 'All of the following are true about Lymphoma of the thyroid except: \nSelect and explain. \nA. More common in females, B. Slow growing, C. Clinically confused with undifferentiated tumours, D. May present with respiratory distress and dysphagia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lymphoma of the thyroid is a rapidly growing malignancy similar to anaplastic carcinoma. Sabiston writes - "This diagnosis should be considered in patients who present with a goitre, especially one that has apparently grown significantly in a short period."\nLymphoma\n\nLymphoma is a rare malignancy of thyroid (< 1%).\nMost are of non-Hodgkin\'s B-cell type.\nAlthough the disease can arise as part of a generalized lymphomatous condition, most thyroid lymphomas develop in patients with chronic lymphocytic thyroiditis (Hashimoto\'s ds.)\nPresenting symptoms are :\n\n- rapidly enlarging mass (similar to anaplastic ca but is often painless.)\n- acute respiratory distress\n- hoarseness\n- dysphagia\n- fever\n\nDiagnosis is usually suggested by FNA biopsy, although core needle or open biopsy may be necessary for definitive diagnosis.\n\nTreatment\n- Thyroid lymphoma responds rapidly to chemotherapy (CHOP - cyclophosphamide, doxorubicin, vincristine and\xa0prednisone)\n- Combined t/t with radiotherapy & chemotherapy is recommended.\n- Surgical resection is recommended to alleviate pressure symptoms.', 'role': 'assistant'}]