Shripad Pagulabout 5 years ago

A 45- year old man presents with weight loss, steatorrhea, and malabsorption. A CT scan of the abdomen reveals a questionable mass in the head of the pancreas. A biopsy specimen microscopically reveals chronic inflammation and atrophy of the pancreatic acini with marked fibrosis. No malignancy is identified. What is the most common cause of this disorder in adults?