Case Report Oral Mass of a Fetus Incidentally Found during Second Trimester: Ultrasound Survey and Postnatal Prognosis of the Baby Huseyin Durukan , 1 Savas Gundogan , 2 Murside ÇevikoLlu KJllJ , 1 and Talat Umut Kutlu Dilek 2 1 Faculty of Medicine, Obstetrics and Gynecology, Mersin University, Mersin, Turkey 2 Faculty of Medicine, Obstetrics and Gynecology, Acibadem University, Istanbul, Turkey Correspondence should be addressed to Savas Gundogan; savas483@hotmail.com Received 6 September 2017; Accepted 28 December 2017; Published 6 February 2018 Academic Editor: Erich Cosmi Copyright © 2018 Huseyin Durukan et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Ultrasound (USG) and magnetic resonance imaging (MRI) can be used to detect and evaluate the face and neck tumors during the in-utero period. We reported and discussed an oral mass which was diagnosed incidentally at mid-trimester exam and managed successfully. 1. Introduction e differential diagnoses of head and neck masses in the fetus include teratoma, lymphangioma, congenital goiter, tumors, cysts of thyroid, neuroblastoma, and hematomas [1]. Invasive diagnostic procedures are suggested for the bilateral head and neck masses because of being associated with genetic anomalies [1]. e most frequent head and neck mass is teratoma [2]. We reported and discussed an oral mass which was diagnosed incidentally at mid-trimester exam and repaired successfully in the infancy. 2. Case 35-year-old, gravida 3 para 0 woman was admitted for the anatomical survey of her fetus at the 21st week of pregnancy. During the US examination, we detected 11 × 10 mm solid mass between tongue and palate. is solid mass was homo- geneous and originated from the bottom of the mouth e mass has no abnormal vessel architecture by Doppler US (Figure 1). ere was no cleſt lip. We decided to perform MRI to reveal extension of solid mass and rule out other head and neck anomalies (Figure 2). Lips and hard palate were visual- ized as intact by both US and MRI. e parents had refused prenatal invasive genetic tests. e couple was informed about the possible risks in the pregnancy. Polyhydramnios did not occur in the remained pregnancy period that could be common. Before cesarean section (C/S) the neonatologists were informed about oral solid mass which might obstruct the airway of the neonate, and the possible need for the EXIT (ex-utero intrapartum treatment) procedure [3]. e baby was delivered by cesarean section in 37 weeks and 4 days of gestation due to breech presentation. e baby’s weight was 2690 gram and had 7 and 9 Apgar scores. In the first neonatal examination of the baby, there was a white, 2 × 2 cm solid mass between the tongue and palate in the mouth (Figure 3). It has smooth surface. ere was another pink coloured adjacent soſt tissue mass that was evaluated as accessory tongue. Postnatal karyotype analysis was reported as 46 XX. erefore, considering the relation between epignathus and congenital heart diseases, the post- natal echocardiography was performed and it revealed mild atrial septal defect and mild tricuspid insufficiency [1]. In the postnatal exam, she had low-set ear and flattened-based nose. e postnatal MRI revealed a 26 × 13 × 10 mm soſt tissue mass, which has leſt paramedian location and seemed hyperintense in the T1 planes and isointense in the T2 planes. She underwent surgery in the neonatal period to excise oral Hindawi Case Reports in Obstetrics and Gynecology Volume 2018, Article ID 6590710, 3 pages https://doi.org/10.1155/2018/6590710