2026-05-28T22:48:49Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/446952026-02-03T11:05:16Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Azumendi, Pedro author Borenstein, Marisa author Jiménez-López, Jesús Salvador author González-Mesa, Ernesto Santiago author Corrales, Carlos author Azumendi, Guillermo author Alonso- Usabiaga, Ignacio author Gómez-Salgado, Juan author Fernández-Carrasco, Francisco Javier author 2024-08-25 To establish a new technique to easily identify the fetal cervix-uterus complex in normal female fetuses from 20 to 40 weeks of gestation. Material and methods: The study was performed in routine examination in normal fetuses by two observers. Twenty-five consecutive cases per gestational week were assessed between 20 and 40 weeks. The same plane of the bladder used in the assessment of the umbilical arteries was used. In this transverse view of the fetal pelvis different structures can be identified from front to back: the bladder, the bowel and the vertebral body. If the uterus is present, it can be seen between the bladder and the rectum, as a round structure pushing the posterior bladder wall. The echogenicity changes as the uterus develops and increases its size. Voluson E10 ultrasound device (GEHealthcare Ultrasound®, Zipf, Austria) equipped with an RM6Cprobe was utilized. Results: Successful identification of the cervix-uterus complex was possible overall in 83.4% of cases, reaching more than 93% from 31 weeks onwards. There was a rapid growth of the cervix-uterus complex after 26 weeks, and in the third trimester appears as a solid round structure behind the fetal bladder. Reproducibility analysis showed agreement between 2 observers in 92% of cases. Conclusion: Identification of the uterus and cervix complex is possible from 20 weeks, although it is easier at the end of gestation. This reproducible technique allows the anatomical study of normal female fetuses and the visualization of kidney malformations and disorders of sexual development. KEY MESSAGES • Identification of the uterus and cervix complex is possible from 20 weeks, although it is easier at the end of gestation. • The assessment of the uterus and cervix complex could be a useful evaluation in the anatomical study of normal female fetuses, and of critical importance in those fetuses with kidney malformations or disorders of sexual development. Pedro Azumendi, Marisa Borenstein, Jesús Salvador Jiménez, Ernesto González-Mesa, Carlos Corrales, Guillermo Azumendi, Ignacio Alonso-Usabiaga, Juan Gómez- Salgado & Francisco Javier Fernández-Carrasco (2025) Prenatal visualization of the fetal uterus in routine 2D ultrasound examination, Annals of Medicine, 57:1, 2449226, DOI: 10.1080/07853890.2024.2449226 0785-3890 https://hdl.handle.net/10630/44695 10.1080/07853890.2024.2449226 Ecografía Utero Prenatal visualization of the fetal uterus in routine 2D ultrasound examination