THU519 Large Congenital Facial Teratoma: A Case Report

Disclosure: A.P. Solis Pazmiño: None. C. Pazmino-Chavez: None. V. Solano: None. C. Garcia: None. Background: Craniocervical teratomas are congenital tumors that arise from the endoderm, mesoderm, and ectoderm germ cell layers. In order to have adequate and prompt management for better outcomes, information about its clinical manifestations and prenatal assessment must be widely disseminated because it can cause death in neonatal patients. The purpose of this case report is to deepen understanding of craniocervical teratoma because there is a dearth of information on the subject. Clinical case: A boy infant was brought in with a significant right mass that had existed from birth. He was delivered by cesarean section at the 38th week of gestation by a 26-year-old primiparous female with one living and healthy child. An extended facial appendage measuring 54 x 23 x 49 mm (L x B x W), with a capacity of 32 mL, was seen during prenatal ultrasonography (Figure 1a). On color Doppler imaging, the appendage was shown as a smoothing, hypodense cystic lesion without any vascularity to be concerned about (Figure 1b). The patient underwent an elective cesarean section at term, the pregnancy developed normally overall, and the newborn was delivered in generally healthy condition. The youngster does not experience pain, have trouble opening his lips, have trouble hearing, or have any other neurological deficits, according to the child’s parents. At the time of examination, the mass measured approximately 6.5 cm by 5 cm by 4 cm in the lateral half of the face (Figure 2) and extended superiorly to the right pterygoid region to the sub-maxillary ipsilateral side. Clinical lessons: Although craniocervical teratoma incidence is low, it is important to identify the appendage on neonatal ultrasound to plan correct management ahead of the baby’s delivery. Additionally, using the 3D-printed model makes it easier to organize the surgery and reduces blood loss while debulking. Presentation: Thursday, June 15, 2023