title: [Case of primary leiomyosarcoma of the seminal vesicle].
abstract: A 72-year-old male visited our hospital with a complaint of perineal and voiding pain. An elastic hard mass was palpated by rectal examination in the cranial lesion of prostate. On CT scan and MRI it was located at the site of the right seminal vesicle. Trans-rectal needle biopsy specimen showed leiomyosarcoma. Radical cystoprostatectomy with pelvic lymph node dissection was performed at Hokkaido University Hospital. Microscopic examination of the resected specimen revealed the tumor arose from the right seminal vesicle without involvement of the bladder and the prostate gland. Three months after the operation the tumor recurred at lung and pelvic lymph node. He died 10 month postoperatively. Autopsy finding showed many visceral organs metastases without local recurrence. In the past, nine cases of leiomyosarcoma of seminal vesicle were published in the literature. Including our case, pathological diagnosis by core needle biopsy was attempted in five cases, though accurate diagnosis was made in only two cases. In our case, Immunohistological study by SMA and desmin was useful for histological diagnosis preoperatively.
authors.affiliation: Department of Urology, Kin-ikyo Chuo Hospital.
authors.forename: Tatsuhiro
authors.initials: T
authors.lastname: Suzuki
authors.forename: Toru
authors.initials: T
authors.lastname: Harabayashi
authors.forename: Takashige
authors.initials: T
authors.lastname: Abe
authors.forename: Ataru
authors.initials: A
authors.lastname: Sazawa
authors.forename: Nobuo
authors.initials: N
authors.lastname: Shinohara
authors.forename: Katsuya
authors.initials: K
authors.lastname: Nonomura
mesh_terms: D001707:Biopsy, Needle; D015653:Cystectomy; D017809:Fatal Outcome; D005834:Genital Neoplasms, Male / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis / Q000473:pathology / Q000556:secondary / Q000601:surgery*; D008175:Lung Neoplasms / Q000473:pathology / Q000556:secondary; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008297:Male; D011468:Prostatectomy; D012669:Seminal Vesicles; D014547:Urinary Diversion