This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
[{'content': 'Most common presentation of extra-pulmonary TB - \nSelect and explain. \nA. Tubercular lymphadenitis, B. Peritoneal TB, C. Pericardial TB, D. Tubercular meningitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Tubercular lymphadenitis o The most common presentation of extra-pulmonary TB in both HIV sero-negative and HIV-infected patients to about 35% in eeneral. Ivmph node disease is particularly frequent among HIV infected patients and in children.o Lymph node TB presents as# Painless swelling of the lymph nodes, most commonly at posterior cervical and supraclavicular sites.# Lymph nodes are usually discrete in early disease but de\\!elop into a matted non tender mass over time and may residt in a fistulous tract draining caseous material.Type of TBIncidenceTB lymphadenitis40%Genitourinary TB10-15%Skeletal TB10%CNS TB5%Gastrointestinal TB3,5%Pericardial TB0.5% (mainly in HIV positive patients with Case fatality of 40%)", 'role': 'assistant'}]