Placental tissue registry. Analysis of the first 500 cases.

Abstract

An analysis has been given of the first 500 cases submitted to the Placental Tissue Registry. Placental lesions were studied in a variety of clinical situations other than the usual complications of pregnancy. There were more infant deaths than infants with a good outcome in the cases of absence of one umbilical artery, amnion nodosum, atheromatosis of the decidual vessels, and acute and chronic villitis. The etiology of chronic villitis remains obscure.