title: Primary extraskeletal osteosarcoma of the seminal vesicle: a case report and literature review.
abstract: A primary extraskeletal osteosarcoma (EOS) is a rare tumour. An EOS of the seminal vesicle has not been reported in the literature. We describe a case of a seminal vesicle EOS initially detected as a pre-rectal mass on a routine transrectal ultrasound in a 48-year-old man. A computed tomography (CT) scan confirmed the tumour to be arising from the left seminal vesicle. A robot-assisted laparoscopic seminal vesiculectomy was performed to avoid neurovascular bundle injury. Microscopic examination of the resected specimen showed a poorly differentiated osteosarcoma originating from the seminal vesicle. The patient received adjuvant chemotherapy. He is doing well without voiding or erectile dysfunction and he is tumour-free five months after surgery.
authors.affiliation: Department of Urology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
authors.forename: Jae Duck
authors.initials: JD
authors.lastname: Choi
authors.forename: Yoon
authors.initials: Y
authors.lastname: La Choi
authors.forename: Hong Seok
authors.initials: HS
authors.lastname: Kim
authors.forename: Seong Il
authors.initials: SI
authors.lastname: Seo
authors.forename: Seong Soo
authors.initials: SS
authors.lastname: Jeon
authors.forename: Hyun Moo
authors.initials: HM
authors.lastname: Lee
authors.forename: Byong Chang
authors.initials: BC
authors.lastname: Jeong
mesh_terms: D017024:Chemotherapy, Adjuvant; D003949:Diagnostic Techniques, Surgical; D005834:Genital Neoplasms, Male / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D010535:Laparoscopy / Q000379:methods; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012516:Osteosarcoma / Q000175:diagnosis* / Q000601:surgery; D012371:Robotics; D012669:Seminal Vesicles / Q000601:surgery; D014057:Tomography, X-Ray Computed