Thrombotic thrombocytopenic purpura and pancreatitis.

Abdominal pain is frequently encountered in patients with thrombotic thrombocytopenic purpura (TTP). Often the pain is secondary to inflammation of the pancreas. A case is presented in which the usual signs of TTP developed well after the clinical and laboratory demonstration of pancreatitis, raising the possibility that the pancreatic inflammation triggered the onset of TTP. Treatment with plasmapheresis resulted in prompt improvement. TTP should be considered in patients with abdominal pain or pancreatitis in whom thrombocytopenia, microangiopathic hemolytic anemia, neurologic changes, fever, and renal disease are present.