title: A giant pelvic malignant schwannoma: a case report and literature review.
abstract: Schwannomas are usually benign tumors that arise from well-differentiated Schwann cells. They rarely occur in the retroperitoneum. Here, we present a case of a 60-year-old man with a giant retroperitoneal pelvic mass. Imageological diagnosis suggested a large heterogeneous mass of 16 cm in diameter located in the abdominopelvic retroperitoneum. Complete intralesional enucleation was achieved without any adjacent organs injury except a severe bleeding which was ceased as we applied the bilateral inferior vesical artery embolization. Final histopathological result showed the tumor was a low malignant Schwannoma. The patient's symptoms were greatly improved after operation. Unfortunately, a local recurrence was detected at the six-month follow-up appointment with consequent losing to follow up.
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical UniversityPingjiang Road 23, Hexi District, Tianjin 300211, China; Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, Second Hospital of Tianjin Medical UniversityTianjin 300211, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical UniversityPingjiang Road 23, Hexi District, Tianjin 300211, China; Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, Second Hospital of Tianjin Medical UniversityTianjin 300211, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Sha
authors.affiliation: Department of Radiology, Second Hospital of Tianjin Medical University Pingjiang Road 23, Hexi District, Tianjin 300211, China.
authors.forename: He-Wen
authors.initials: HW
authors.lastname: Li
authors.affiliation: Department of Radiology, Second Hospital of Tianjin Medical University Pingjiang Road 23, Hexi District, Tianjin 300211, China.
authors.forename: Mei
authors.initials: M
authors.lastname: Bai
authors.affiliation: Department of Cardiology, Second Hospital of Tianjin Medical University Pingjiang Road 23, Hexi District, Tianjin 300211, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical UniversityPingjiang Road 23, Hexi District, Tianjin 300211, China; Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, Second Hospital of Tianjin Medical UniversityTianjin 300211, China.
authors.forename: Hai-Long
authors.initials: HL
authors.lastname: Hu
authors.affiliation: Department of Urology, Second Hospital of Tianjin Medical UniversityPingjiang Road 23, Hexi District, Tianjin 300211, China; Tianjin Key Laboratory of Urology, Tianjin Institute of Urology, Second Hospital of Tianjin Medical UniversityTianjin 300211, China.
authors.forename: Chang-Li
authors.initials: CL
authors.lastname: Wu
mesh_terms: D001706:Biopsy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery; D010386:Pelvic Neoplasms / Q000473:pathology* / Q000601:surgery; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D047368:Tumor Burden
keywords: Giant malignant schwannoma; complete resection; diagnosis; pelvic
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