Highlights The number of vessels was reduced in the placental villi of pregnant women with diabetes. The placental villous vessels of women with previous diabetes were more distant from the maternal blood. ABSTRACT Objective: This study was conducted to investigate the distribution of placental villous vessels in pregnant women with different degrees of hyperglycemia. Methods: A cross-sectional study was performed using placental samples from 30 pregnant women without diabetes (n=10), with gestational diabetes mellitus (n=10), and with previous diabetes (type […]