This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
Plain radiograph of a patient with chronic abdominal pain is given. What could be the probable diagnosis? 
Select and explain. 
A. Pneumoperitoneum, B. Pancreatitis, C. Hemoperitoneum, D. Acute Appendicitis
B: Pancreatitis
Answer: B: Pancreatitis 
Explanation: Chronic alcoholic with recurrent and long standing pain abdnomen might have dystrophic calcification over the residual pancreatic tissue. The following image shows calcification of pancreas. Figure: CALCIFICATION OF PANCREAS: Chronic pancreatitis.