This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Pain at left shoulder tip in a patient with splenic trauma is known as 
Select and explain. 
A. Trosseu sign, B. Kehr's sign, C. Cullen sign, D. Rovsing's sign
B: Kehr's sign
Answer: B: Kehr's sign 
Explanation: Referred pain is due to irritation of the diaphragm and phrenic nerves by the blood in the peritoneal cavity (hemoperitoneum). Reference SRB edition 5 page no.1196