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: Pathology
[{'content': 'Hyperscretory granules seen in with lungCa \nSelect and explain. \nA. Adeno Ca, B. Small cell Ca, C. Large cell Ca, D. Bronchoalveolar Ca', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Small cell carcinoma: Small cell carcinomas are\xa0frequently hilar or central in location, have strong\nrelationship to cigarette smoking and are highly malignant\xa0tumours. They are most often associated with ectopic\nhormone production because of the\xa0presence of\xa0neurosecretory granules\xa0in majority of tumour cells which\nare similar to those found in argentaffin or Kulchitsky cells\xa0normally found in bronchial epithelium.\xa0By immunohistochemistry,\nthese tumour cells are positive for\xa0neuroendocrine markers: chromogranin, neuron-specific\xa0enolase (NSE) and synaptophysin.', 'role': 'assistant'}]