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: Anatomy
[{'content': "The tympanic note on percussion in Traube's space on chest wall is due to which underlying structure? \nSelect and explain. \nA. Base of lung, B. Fundus of stomach, C. Left costo-diaphragmatic recess, D. Left sub phrenic space", 'role': 'user'}, {'content': "Answer: B \nExplanation: Fundus of stomachPercussion for splenomegaly: The normal human spleen measures about 125 millimeters in length, and splenomegaly is an impoant clinical sign.There are 2 possibilities to evaluate splenomegaly in the clinical examination: percussion and palpation. Percussion can be done in this space.Beneath Traube's space lies the stomach, which produces a tympanic sound on percussion. Dullness to percussion over Traube's space may indicate splenomegaly, although this can also be a normal finding after a meal.", 'role': 'assistant'}]