RT Journal Article
T1 Diagnosis and Management of Struma Ovarii in Pregnancy: A Case Report
A1 Narbona-Arias, Isidoro
A1 Castaño-Frías-Lucia, 
A1 Marfil-Gonzalez-María, 
A1 Baños-Cárdenas-Laura, 
A1 Jimenez-Lopez-Jesús S., 
K1 Tumores
K1 Embarazos - Complicaciones
AB Adnexal tumors during pregnancy are rare, with a prevalence ranging from 0.05% to 3%,and in most cases, they are benign. Struma ovarii, a monodermal teratoma, consists ofover 50% thyroid tissue and accounts for 2.7% of ovarian teratomas. It typically affectswomen aged 40–60 and is exceptionally rare during pregnancy. Diagnosis is often onlyestablished after surgical intervention and histological examination. We present the case ofa 39-year-old pregnant woman (gravida 2, para 1) at 19 weeks of gestation who presentedwith acute lower abdominal pain. At her first visit at 11 weeks, ultrasound revealed a12 cm multilocular left adnexal mass. Initial conservative management was followed byemergency laparoscopy due to suspected ovarian torsion, resulting in a left oophorectomy.Histopathology confirmed struma ovarii. Thyroid function tests (TSH, FT4) remainedwithin normal limits throughout pregnancy. The pregnancy continued without furthercomplications, culminating in a spontaneous vaginal delivery at 40 + 4 weeks of a healthyfemale infant weighing 3800 g. Due to the rarity of this condition, treatment guidelinesremain undefined, with management decisions relying on limited case reports and clinicaljudgment. This report highlights the importance of detailed evaluation and individualizedmanagement in such uncommon presentations during pregnancy.
PB MDPI
SN 2075-1729
YR 2025
FD 2025-08-21
LK https://hdl.handle.net/10630/44680
UL https://hdl.handle.net/10630/44680
LA eng
NO Narbona Arias I, Castaño Frías L, Marfil Gonzalez M, Baños Cárdenas L, Jimenez Lopez JS. Diagnosis and Management of Struma Ovarii in Pregnancy: A Case Report. Life. 2025; 15(8):1328. https://doi.org/10.3390/life15081328
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 feb 2026