A 32-year-old man was admitted semi-comatose with digestive troubles to the hospital. A diabetic keto-acidosis was discovered. The diabetes was known by the patient for one year and a half, but it was not treated. Furthermore the laboratory studies showed a hyperlipidemia (type V) and an increase in pancreatic enzymes. The hyperlipidemia disappeared with insulin therapy. The chronology of the facts was probably: a hyperlipidemia associated with the diabetes, responsible of an acute pancreatitis, which induced a keto-acidosis.