Seminal vesicle schwannoma: Transrectal and intraoperative sonographic findings

Chih Yu Shen, Nan Haw Chow, Yuh Shyan Tsai

Research output: Contribution to journalArticlepeer-review


Schwannomas, namely neurilemmomas, are benign nerve sheath tumors and comprise the myelin sheaths around the peripheral nerves. Schwannomas commonly occur in the head and neck, or extremities, less found in the mediastinum and retroperitoneum, and rarely in the pelvis. We report a 40-year-old male presenting with an 18-month history of nocturia and urinary frequency. Transrectal ultrasound revealed a well-defined, 2.81 cm Ö 3.77 cm in size, homogeneous, hypoechoic mass in the tail of the left seminal vesicle, compatible with the finding of a well-demarcated mass at the left seminal vesicle with homogeneous contrast enhancement on computed tomography. He underwent laparoscopic excision of the mass via da Vinci robotic surgical system. Intraoperative sonography showed that the mass exhibited the majority of hypoechoic density with some hyperechoic spots inside. Pathology reveals schwannoma. Both of erectile and ejaculatory functions were claimed postoperatively. Our case report highlights the potential of either intraoperative or preoperative sonography in the assessment of the seminal vesicle schwannoma.

Original languageEnglish
Pages (from-to)123-125
Number of pages3
JournalJournal of Medical Ultrasound
Issue number2
Publication statusPublished - 2021 Apr 1

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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