RESUMO
BACKGROUND: Sacrococcygeal teratoma is one of the most frequently prenatally diagnosed neoplasias. Obstetric ultrasound has a role in the diagnosis and management of these tumors during pregnancy. In this report, we describe a multidisciplinary approach in a case of a patient with sacrococcygeal teratomas and preterm delivery, as well as postnatal outcomes. CASE PRESENTATION: A 26-year-old Caucasian woman at 20.3 weeks of gestation with a normal gestational course and no relevant medical or surgical history was referred to our institution with a sacrococcygeal mass diagnosis. Magnetic resonance imaging confirmed the diagnosis of sacrococcygeal teratoma type I according to the Altman classification. Follow-up with ultrasound showed an increase in the size of the mass up to 190 × 150 mm, high Doppler flow, and severe polyhydramnios. At 35.1 weeks of gestation, the patient had premature rupture of membranes, and an emergency cesarean section was performed due to recurrent late decelerations detected by fetal heart rate monitoring. Afterward, surgery was performed successfully at 36 hours of life. Posterior controls revealed normal and healthy child growth. CONCLUSIONS: This case report demonstrates the importance of a multidisciplinary approach to offer the best neonatal outcomes by performing early surgery, as well as the need for follow-up by ultrasound in order to minimize complications by assessing mass growth, Doppler flow, and amniotic fluid.