Idiopathic arterial calcification in infancy. Report of a case in a premature fetus.

A case of advanced idiopathic arterial calcification occurred in a macerated male fetus, 29 weeks' gestational age, delivered of a 22-year-old primigravida. The aortic valve, aorta, coronary arteries, ductus arteriosus, and pulmonary, mesenteric, periadrenal, and renal arteries were calcified and were detected on postmortem roentgenogram. Myocardial calcification and endocardial fibroelastosis were also present. The mother's calcium, phosphorus, and alkaline phosphatase levels were normal. Vitamin D intake was not excessive. A maternal febrile illness at 18 to 19 weeks' gestation was the only untoward event during pregnancy.