Prenatal ultrasound diagnosis of fetal volvulus without malrotation: A case report.

Cases of fetal volvulus without malrotation are extremely uncommon and pose a life-threatening condition of acute abdomen. In cases of inadequate intestinal rotation, the narrowing of the attachment of the mesenteric root can easily cause intestinal torsion and consequent local blood circulation disorders within the intestinal tract, leading to aseptic necrosis and simultaneous intestinal perforation, resulting in meconium peritonitis, ascites, anemia, and potentially fetal death. In ultrasound examinations, it may be the preferred examination method for this disease. Ultrasound physicians should improve their understanding of this disease in prenatal diagnosis, as it has important clinical value for obstetric management and neonatal treatment, thereby potentially improving adverse pregnancy outcomes.