A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos

Abstract Background Sacrococcygeal teratomas (SCTs) are known to cause urological complications, but urethrovaginal (UV) fistula as a complication of SCT is rare. We herein report a case of SCT with UV fistula and hydrocolpos. Case presentation A 1-day-old female neonate presented to our department...

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Main Authors: Yuichi Shibui, Satoshi Obata, Ryuichiro Hirose, Ryo Nakano, Takashi Setoue, Takeshi Miyazaki, Hirofumi Matsuoka, Toshihiko Sato
Format: Article
Language:English
Published: Japan Surgical Society 2023-10-01
Series:Surgical Case Reports
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Online Access:https://doi.org/10.1186/s40792-023-01772-y
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author Yuichi Shibui
Satoshi Obata
Ryuichiro Hirose
Ryo Nakano
Takashi Setoue
Takeshi Miyazaki
Hirofumi Matsuoka
Toshihiko Sato
author_facet Yuichi Shibui
Satoshi Obata
Ryuichiro Hirose
Ryo Nakano
Takashi Setoue
Takeshi Miyazaki
Hirofumi Matsuoka
Toshihiko Sato
author_sort Yuichi Shibui
collection DOAJ
description Abstract Background Sacrococcygeal teratomas (SCTs) are known to cause urological complications, but urethrovaginal (UV) fistula as a complication of SCT is rare. We herein report a case of SCT with UV fistula and hydrocolpos. Case presentation A 1-day-old female neonate presented to our department with prominent swelling in the sacrococcygeal region. She was born at 37 gestational weeks via spontaneous vaginal delivery from a 39-year-old woman. The weight of the baby was 2965 g, and her Apgar scores were 4/10 (at 1 and 5 min). An MRI examination confirmed an 11 × 11 cm Altman classification typeII SCT associated with hydrocolpos, a dilated urinary bladder, and bilateral hydronephrosis. When she was 5 days, the SCT was excised totally and a coccygectomy was performed. After the operation, as her urinary output appeared unstable, a cystoscopic examination was performed on the third postoperative day. This revealed that the UV fistula was located approximately 1 cm from the urethral opening. In addition, the proximal urethra was unobstructed and connected to the bladder. The cystoscope allowed for the passage of a urinary catheter through the urethra. After 1 month of catheter placement, she was discharged from the hospital at 57 days of age. Follow-up was uneventful, with neither urinary infection nor retention. Conclusions SCTs are associated with not only trouble with rectal function and lower extremity movement but also urinary complications. The pathogenesis of this UV fistula is thought to be the rapid growth of the SCT that developed in the fetal period, resulting in obstruction of the urethra by the tumor and the pubic bone, which in turn caused urinary retention and the formation of a fistula as an escape route for the pressure. Because SCTs can cause a variety of complications depending on the course of the disease, careful examination and follow-up are necessary.
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spelling doaj-art-8a17e6d6cd7249e3b4e851b73d2d17792025-08-20T03:34:00ZengJapan Surgical SocietySurgical Case Reports2198-77932023-10-01911610.1186/s40792-023-01772-yA case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolposYuichi Shibui0Satoshi Obata1Ryuichiro Hirose2Ryo Nakano3Takashi Setoue4Takeshi Miyazaki5Hirofumi Matsuoka6Toshihiko Sato7Department of General Thoracic, Breast, and Pediatric Surgery, Fukuoka UniversityDepartment of General Thoracic, Breast, and Pediatric Surgery, Fukuoka UniversityDepartment of General Thoracic, Breast, and Pediatric Surgery, Fukuoka UniversityDivision of Neonatology, Center for Maternal, Fetal and Neonatal Medicine, Fukuoka University HospitalDivision of Neonatology, Center for Maternal, Fetal and Neonatal Medicine, Fukuoka University HospitalDepartment of Urology, Faculty of Medicine, Fukuoka UniversityDepartment of Urology, Faculty of Medicine, Fukuoka UniversityDepartment of General Thoracic, Breast, and Pediatric Surgery, Fukuoka UniversityAbstract Background Sacrococcygeal teratomas (SCTs) are known to cause urological complications, but urethrovaginal (UV) fistula as a complication of SCT is rare. We herein report a case of SCT with UV fistula and hydrocolpos. Case presentation A 1-day-old female neonate presented to our department with prominent swelling in the sacrococcygeal region. She was born at 37 gestational weeks via spontaneous vaginal delivery from a 39-year-old woman. The weight of the baby was 2965 g, and her Apgar scores were 4/10 (at 1 and 5 min). An MRI examination confirmed an 11 × 11 cm Altman classification typeII SCT associated with hydrocolpos, a dilated urinary bladder, and bilateral hydronephrosis. When she was 5 days, the SCT was excised totally and a coccygectomy was performed. After the operation, as her urinary output appeared unstable, a cystoscopic examination was performed on the third postoperative day. This revealed that the UV fistula was located approximately 1 cm from the urethral opening. In addition, the proximal urethra was unobstructed and connected to the bladder. The cystoscope allowed for the passage of a urinary catheter through the urethra. After 1 month of catheter placement, she was discharged from the hospital at 57 days of age. Follow-up was uneventful, with neither urinary infection nor retention. Conclusions SCTs are associated with not only trouble with rectal function and lower extremity movement but also urinary complications. The pathogenesis of this UV fistula is thought to be the rapid growth of the SCT that developed in the fetal period, resulting in obstruction of the urethra by the tumor and the pubic bone, which in turn caused urinary retention and the formation of a fistula as an escape route for the pressure. Because SCTs can cause a variety of complications depending on the course of the disease, careful examination and follow-up are necessary.https://doi.org/10.1186/s40792-023-01772-ySacrococcygeal teratomaUrethrovaginal fistulaHydrocolposUrological complicationsUrogenital sinus
spellingShingle Yuichi Shibui
Satoshi Obata
Ryuichiro Hirose
Ryo Nakano
Takashi Setoue
Takeshi Miyazaki
Hirofumi Matsuoka
Toshihiko Sato
A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
Surgical Case Reports
Sacrococcygeal teratoma
Urethrovaginal fistula
Hydrocolpos
Urological complications
Urogenital sinus
title A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
title_full A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
title_fullStr A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
title_full_unstemmed A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
title_short A case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
title_sort case of sacrococcygeal teratoma associated with antenatally acquired urethrovaginal fistula and hydrocolpos
topic Sacrococcygeal teratoma
Urethrovaginal fistula
Hydrocolpos
Urological complications
Urogenital sinus
url https://doi.org/10.1186/s40792-023-01772-y
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