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: Medicine
Most commonly involved organ in congenital tuberculosis is 
Select and explain. 
A. Lungs, B. Liver, C. Lymph nodes, D. Skin
B: Liver
Answer: B: Liver 
Explanation: Ans. Answer is B (Liver): Most common primary site- LIVER (primary complex in liver is suggestive of congenital TB) Most common site is- LUNG The form of disease is usually miliary with multiple organ involvement. Lungs are involved in almost all cases. Other sites frequently involved are liver, spleen, lymph nodes, the gastrointestinal tract and kidney'. -Textbook of Pulmonary Medicine by Behera 2"a/495