Acute pancreatitis during pregnancy is uncommon and usually associated with gallstones. However other etiologies must be considered. We report a 24 years old woman with a 32 weeks pregnancy consulting for abdominal pain, nausea and vomiting. She had elevated lipase and amylase levels, a corrected serum calcium of 13.1 mg/dl and a serum phosphate of 1.6 mg/dl. A magnetic resonance colangiopancreatography showed an enlarged pancreas with inflammatory changes and a normal Wirsung duct. A parathyroid nodule was found on cervical ultrasonography. The patient was treated initially with cinacalcet with partial response. A parathyroidectomy was performed at 39 weeks of pregnancy with a good maternal and fetal evolution.