Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2022 Jan 12;17(3):881-885.
doi: 10.1016/j.radcr.2021.12.033. eCollection 2022 Mar.

Prenatally diagnosed accessory scrotum: A case report and review of the literature on prenatal features

Koichi Deguchi  1 , Yuko Tazuke  1 , Miho Watanabe  1 , Chiyoshi Toyama  1 , Motonari Nomura  1 , Ryuta Saka  1 , Hiromi Harada  2 , Yukie Nagamine  2 , Masayuki Endo  3 , Ritsuko Puh  4 , Hiroomi Okuyama  1
Affiliations
Case Reports

Prenatally diagnosed accessory scrotum: A case report and review of the literature on prenatal features

Koichi Deguchi et al. Radiol Case Rep. .

Abstract

Accessory scrotum (AS) is rarely diagnosed antenatally, and its prenatal features remain unknown. Here, we report a case of a prenatally diagnosed accessory scrotum with perineal lipoma. A 33-year-old woman was referred to our hospital at 35 weeks of gestation to evaluate a mass in the fetal perineal region. Prenatal ultrasonography showed a 2.0 × 2.0 cm sized, echogenic, and circular mass located posterior to the left scrotum in a male fetus. Magnetic resonance imaging (MRI) showed a mass containing adipose tissue. A 6.5 cm elastic mass (AS and protruding lipoma) was observed in the perineal region, and surgical excision was performed at 8 months of age. Histological examination confirmed the diagnosis of AS with perineal lipoma, and there was no recurrence at follow-up. The typical prenatal presentation of AS was a circular perineal mass located posterior to the normal scrotum and was associated with perineal lipoma. The prenatal detection of AS was feasible with careful observation via ultrasonography, and prenatal MRI was useful in characterizing perineal tumors and evaluating associated anomalies.

Keywords: AS, Accessory scrotum; Accessory scrotum; CT, Computed tomography; MRI, Magnetic resonance imaging; Perineal lipoma; Prenatal diagnosis; US, Ultrasonography.

PubMed Disclaimer

Conflict of interest statement

None.

Figures

Fig 1
Fig. 1
Prenatal images. (A) A prenatal ultrasonography on an axial perineal view of the perineum at 35 weeks of gestation shows a 2.0-cm-sized circular mass (arrow) posterior to the normal scrotum (arrow head). (B) The three-dimensional reconstruction image of ultrasonography shows a mass (arrow) located posterior to the normal scrotum (arrowheads). (C) A prenatal magnetic resonance image shows a perineal mass with adipose tissue characteristics (arrow).
Fig 2
Fig. 2
Postnatal images. (A) A computed tomography image shows an accessory scrotum with perineal lipoma. (B) A postnatal magnetic resonance image shows an accessory scrotum with perineal lipoma (arrow).
Fig 3
Fig 3
(A) Gross appearance of an accessory scrotum with perineal lipoma (arrows). (B) The association between anus (arrow head) and the accessory scrotum (arrows) was demonstrated. (C) Gross appearance after surgical resection. (D) Gross appearance of the perineal area 2 months postoperatively.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

  • Accessory Scrotum - Truly an Appendage?
    Masrani N, Shetty SS, Mane K, Muzumdar A, Radiowala SS, Gandhi S, Shenoy NS, Shah H. Masrani N, et al. J Indian Assoc Pediatr Surg. 2024 Jul-Aug;29(4):390-391. doi: 10.4103/jiaps.jiaps_54_24. Epub 2024 Jul 6. J Indian Assoc Pediatr Surg. 2024. PMID: 39149430 Free PMC article.
  • A case of dumbbell-shaped accessory scrotum with concomitant lipoma.
    Ibuka S, Saka R, Sonobe H, Tsukada R, Iwasaki S, Omote R. Ibuka S, et al. Surg Case Rep. 2024 May 1;10(1):106. doi: 10.1186/s40792-024-01906-w. Surg Case Rep. 2024. PMID: 38691310 Free PMC article.

References

    1. Goto Y., Takiguchi K., Shimizu H., Go H., Tanaka H. Congenital perianal lipoma: a case report and review of the literature. Surg Case Rep. 2019;5:199. doi: 10.1186/s40792-019-0753-z. - DOI - PMC - PubMed
    1. Budhiraja S., Pandit S.K. Accessory Scrotum. Urol Int. 2000;63:210–211. - PubMed
    1. Aboodi M.M., Al-Jadeed H.A. Accessory pseudophallus with accessory pseudoscrotum detected during antenatal sonographic scanning. J Ultrasound Med. 2005;24:1163–1166. doi: 10.7863/jum.2005.24.8.1163. - DOI - PubMed
    1. Lee R.H., Goodwin T.M., Miller D., Songster G.S. Accessory scrotum: prenatal sonographic features. Ultrasound Obst Gyn. 2007;30:118–119. doi: 10.1002/uog.4060. - DOI - PubMed
    1. Murase N., Uchida H., Hiramatsu K. Accessory scrotum with perineal lipoma diagnosed prenatally: case report and review of the literature. Nagoya J Med Sci. 2015;77:501–506. - PMC - PubMed

Publication types