title: Primary epididymis malignant triton tumor: case report and review of the literature.
abstract: BACKGROUND
  Malignant triton tumor (MTT) is a rare and histological complexity characterized by a mixture of peripheral nerve sheath tumors and with rhabdomyoblastic differentiation. It follows a particularly malignant course.
  
  
  METHODS
  In the present study, we report the first MTT of epididymis. The patient is a 22-year-old male presented with swelling in the left scrotum over a 2-month period. He did not have the history or symptoms of neurofibromatosis type 1. A mass measured about 3 cm × 4 cm was found in the left epididymis by ultrasound and CT scan. It was diagnosed as epididymis tumor and underwent exploration; intraoperative frozen section was diagnosed malignant tumor and treated with radical orchidoepididymectomy. The pathological report was malignant triton tumor. Despite taken high-dose radiation therapy and followed by chemotherapy for four cycles, he was died of progressive disease with multiple metastases 26 months after surgery. The clinic pathologic characteristics and optimal treatment strategy are reviewed.
authors.affiliation: Department of Urology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China. 1064786671@qq.com.|Department of Urology, Dezhou People Hospital, Dezhou City, Shandong Province, China. 1064786671@qq.com.
authors.forename: Lijian
authors.initials: L
authors.lastname: Gao
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Pingjiang Road, No 23, He Xi District, Tianjin, 300211, China. hualinsong1991@163.com.
authors.forename: Hualin
authors.initials: H
authors.lastname: Song
authors.affiliation: The Second Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, China. 875774495@qq.com.
authors.forename: Kun
authors.initials: K
authors.lastname: Mu
authors.affiliation: Department of Head and Neck Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, China. 234007811@qq.com.
authors.forename: Jiaxin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Urology, Tianjin Baodi Hospital of Tianjin Medical University, Tianjin, 300321, China. 1146167111@qq.com.
authors.forename: Baoyin
authors.initials: B
authors.lastname: Guo
authors.affiliation: Department of Urology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China. 690511471@qq.com.
authors.forename: Benkang
authors.initials: B
authors.lastname: Shi
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Pingjiang Road, No 23, He Xi District, Tianjin, 300211, China. gangli797980@hotmail.com.
authors.forename: Gang
authors.initials: G
authors.lastname: Li
mesh_terms: D004822:Epididymis / Q000000981:diagnostic imaging / Q000473:pathology*; D005834:Genital Neoplasms, Male / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D014463:Ultrasonography; D055815:Young Adult