This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Stony dull note on percussion is characteristic of 
Select and explain. 
A. Pleural effusion, B. Consolidation, C. Pleurisy, D. Tuberculosis cavity
A: Pleural effusion
Answer: A: Pleural effusion 
Explanation: Pleural Effusion - Percussion findings Stony dullness with increased resistance and no shifting dullness below the level of fluid.Skodaic resonance (boxy note) just above the effusionObliteration of Traube&;s space in left side effusionGrocco&;s triangle: Triangular area of dullness against veebral column, at the base of opposite lung, due to collapse&; of lungEllis&;S&; shaped curve(Refer: Harrison's Principles of Internal Medicine, 18th edition, pg no: 2178-2180)