肾脏恶性纤维组织细胞瘤的CT表现

摘要

目的：探讨肾脏恶性纤维组织细胞瘤的CT表现及CT对该病的诊断价值。方法：回顾性分析经手术病理证实的8例肾脏恶性纤维组织细胞瘤的CT表现及肿瘤位置、形态、边界、瘤内成分。结果：本组患者术前均未能正确诊断。肿瘤均为单侧，形态呈不规则状或类圆形，边界不清晰，6例瘤内有变性坏死，3例瘤内合并出血，2例灶周出现钙化；7例肿块实性成分呈轻-中度强化，延迟期强化轻度减低。结论：肾脏恶性纤维组织细胞瘤术前极易误诊，CT增强扫描图像有一定的特征性，结合临床资料可以提高诊断准确率，确诊主要依靠病理及免疫组化检查。%Objective:To explore the CT findings of primary renal malignant fibrous histiocytoma (MFH) and its value in diagno-sis. Methods:CT manifestations and the location,shape,margin,internal structure of 8 patients with renal MFH proved by histopathology were retrospectively reviewed. Results:None of patients with renal MFH were correctly diagnosed with CT before operation. Tumors were unilateral in all patients. All the masses showed irregular lobulated and ill-definded. Degeneration and necrosis occured in 6 cases,intratumoral hemorrhage in 3 cases,calcification in 2 cases,mild-moderate enhancement in arterial phase while mild loss in delayed phase after contrast administration in 7 cases. Conclusions:Renal MFH is often misdiagnosed before surgery. CT findings can reveal part of the special features of renal MFH. Improvement of diagnostic accuracy could be obtained as clinical date in combination with imaging findings,yet the final diagnosis is based on pathology and immunohisto-chemical examination.