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': 'What is tuberculoma? \nSelect and explain. \nA. Granuloma present in the lungs, B. Tuberculous periapical granuloma, C. Tuberculous lesion of the lymph nodes, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Tuberculosis may also involve the bone of the maxilla or mandible. One common mode of entry for the microorganisms is into an area of periapical inflammation by way of the blood stream; an anachoretic effect.\nIt is conceivable also that these microorganisms may enter the periapical tissues by direct immigration\xa0through the pulp chamber and root canal of a tooth with an open cavity. The lesion produced is\xa0essentially a tuberculous periapical granuloma or tuberculoma. These lesions were usually painful and\xa0sometimes involve a considerable amount of bone by relatively rapid extension.\nRef: Shafer's textbook of oral pathology 7th edition page 321-322", 'role': 'assistant'}]