侵袭性纤维瘤病的CT及MRI特征

目的：探讨侵袭性纤维瘤病（AF）的CT及MRI特点。方法：回顾性分析23例经手术病理证实的AF的CT和MRI表现。结果：CT检查：腹壁外型7例，肿块界限清楚4例，不清楚3例；密度均匀5例，不均匀2例；等密度3例，等低密度2例，略低密度2例。腹壁型16例，肿块界限清楚15例，不清楚1例；密度均匀13例，不均匀3例；等密度9例，略低密度4例，等低密度3例。增强12例，其中动脉期呈中度强化4例，呈轻度强化8例，静脉期和延迟期均呈轻度持续强化。MRI检查4例：肿块信号均匀1例，不均匀3例；T2WI呈略高信号2例，呈高低信号1例，呈混杂信号1例；T1WI肿块呈等低信号1例，呈低信号3例；T2WI压脂呈高低信号2例，呈高信号2例。邻近骨质侵袭性破坏4例，骨质受压1例，子宫和乙状结肠受压1例。结论：AF的CT及MRI表现具有一定特征性，CT、MRI检查对AF有较高的诊断价值。

CT and MRI features of aggressive ifbromatosis

Objective： To explore CT and MRI features of aggressive fibromatosis.Methods： The CT and MRI ifndings of aggressive ifbromatosis conifrmed by surgical pathology in 23 cases were retrospectively analyzed.Results： CT examination： the abdominal wall outside type of 7 cases： 4 mass clear boundaries and 3 unclear; 5 mass with homogeneous density and 2 uneven; 3 even density, 2 equal low density, 2 low density. The abdominal wall type of 16 cases： 15 mass clear boundaries and 1 unclear; 13 mass with homogeneous density and 3 uneven; 9 even density, 4 slight low density, 3 equal low density. The enhancement of 12 cases： 4 moderate en-hancement and 8 slight enhancement in the arterial phase, mild persistent enhancement in the venous phase and de-layed phase. MRI examination： 1 mass signals even and 3 uneven; 2 slightly high signal and 1 high with low signal and 1 high with low or on T2WI; 1 low or even signal and 3 low signal on T1WI; 2 low signal and 2 high signal on T2WI fat suppression. 4 bone invasion damaged, 1 compression, 1 uterine, sigmoid compression.Conclusion： The CT and MRI manifestations of aggressive ifbromatosis have certain characteristics features, CT and MRI examina-tion is of great value in the diagnosis of the disease.