ABSTRACT
Leptospirosis is a Zoonotic disease that rarely manifests in a severe manner, [Weil's syndrome]. Regarding epidemiology of this disease, in some rural areas of Mazandaran Province we encountered a rare case of acute pancreatitis during progression of severe Leptosprosis is presented herein. Patient is a 50 year old male farmer who was admitted to the hospital due to experiencing 10 days of fever, myalgia, vomiting, jaundice and abdominal pain. He underwent haemo-dialysis due to acute renal failure only once. Direct bilirubin was 31.7 mg/dl with serum amylase, while lipase was three times more than normal levels. The CT-Scan demonstrated diffuse pancreatic enlargement. The IgM titer fourfold which was more than normal level against leptospirosis [ELISA] confirmed the diagnosis. Patient was cured completely through supportive care and antibiotic therapy, thus, this case was reported in drawing attention to Leptospira infections, which should be considered in the differential diagnosis of patients with jaundice and pancreatitis