Two clinical cases of meconium peritonitis in the fetuses are presented. The diagnosis was made prenatally
at 30+5 and 20+1 weeks of gestation. The main ultrasound signs were ascites, loop expansion and thickening of
the intestinal wall, peritoneal calcifications, meconium pseudocysts. In one case, pregnancy was complicated by
polyhydramnios. In both cases, the pregnancy ended in premature birth, followed by surgical treatment during
the first days of life. A review of the literature on the topic are discussed the etiology, the spectrum and frequency
of ultrasound signs suggesting this condition in the fetus, the effectiveness of prenatal diagnosis, the prognosis
for the life and health of the newborn, as well as the impact of the quality and timeliness of the prenatal diagnosis
on the management of pregnancy and timeliness of surgical care for the newborn.