tailieunhanh - Báo cáo y học: "Soft-tissue perineurioma of the retroperitoneum in a 63-year-old man, computed tomography and magnetic resonance imaging findings: a case report"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Soft-tissue perineurioma of the retroperitoneum in a 63-year-old man, computed tomography and magnetic resonance imaging findings: a case report. | Yasumoto et al. Journal of Medical Case Reports 2010 4 290 http content 4 1 290 jAg JOURNALOF medical ÌỤr case REPORTS CASE REPORT Open Access Soft-tissue perineurioma of the retroperitoneum in a 63-year-old man computed tomography and magnetic resonance imaging findings a case report 1 1 1 2 2 Mayumi Yasumoto Yoshiaki Katada Reiko Matsumoto Akiko Adachi Koh Kaneko Abstract Introduction Soft-tissue perineuriomas are rare benign peripheral nerve sheath tumors in the subcutis of the extremities and the trunks of young patients. To our knowledge this the first presentation of the computed tomography and magnetic resonance imaging of a soft-tissue perineurioma in the retroperitoneum with pathologic correlation. Case presentation A 63-year-old Japanese man was referred for assessment of high blood pressure. Abdominal computed tomography and magnetic resonance imaging showed a well-defined gradually enhancing tumor without focal degeneration or hemorrhage adjacent to the pancreatic body. Tumor excision with distal pancreatectomy and splenectomy was performed as a malignant tumor of pancreatic origin could not be ruled out. No recurrence has been noted in the 16 months since the operation. Pathologic examination of the tumor revealed a soft-tissue perineurioma of the retroperitoneum. Conclusion Although the definitive diagnosis of soft-tissue perineurioma requires biopsy and immunohistochemical reactivity evaluation the computed tomography and magnetic resonance imaging findings described in this report suggest inclusion of this rare tumor in the differential diagnosis when such findings occur in the retroperitoneum. Introduction Soft-tissue perineuriomas are rare benign peripheral nerve sheath tumors with perineurial cell differentiation 1-4 . They were first described by Lazarus and Trom-betta in 1978 1 . Although they occur most commonly in the subcutis of the extremities and the trunk of young to middle-aged adults these lesions also .