摘要
目的探讨小儿炎性成肌纤维细胞瘤（IMT）的CT表现。方法搜集经手术病理证实的18例IMT，所有病例均行CT平扫及增强扫描。结果18例中单发16例，分别位于肺组织4例，大网膜2例，肾脏2例，气管、左主支气管、右侧胸膜、胰腺、左大腿肌层、前列腺、右锁骨上窝、膀胱各1例；多发2例，位于大网膜和空肠系膜1例，位于腹腔内及肝右叶肝裂旁1例。CT表现为实性肿块16例，其中3例合并钙化，囊实性肿块2例。增强扫描显示实性瘤体呈外周中度强化，中心部分轻度强化8例，轮辐状强化2例，强化不规律6例；2例囊实性瘤体则实性部分呈不均匀强化，囊性部分强化不显著，瘤体压迫包绕大血管的3例均位于胸部，压迫邻近管道状结构6例，其中气管1例，左主支气管1例，右主支气管1例，胰胆管1例，尿道2例。病理示瘤组织由梭形纤维细胞及炎性细胞组成，免疫组织化学染色平滑肌肌动蛋白（SMA）呈阳性表达。结论IMT的CT表现有一定特点，能提供有价值的诊断信息。
Objective To investigate the CT features of inflammatory myofibroblastic tumor in children. Methods Eighteen patients with inflammatory myofibroblastic tumor proven by surgery and pathology were examined with plain and contrast medium enhancement CT scan. Results Of 18 cases, 16 had isolated lesions located at lung （n =4） , mesentery （n =3） , kidney （n =2） and trachea （n = 1 ） , left main bronchus （ n = 1 ）, right thoracic cavity （ n = 1 ）, peritoneum cavity （ n = 1 ）, pancreas （ n = 1 ）, left thigh （ n = 1 ） , prostate （ n = 1 ） , superclvicle soft t tissue （ n = 1 ） , bladder （ n = 1 ）. The other 2 cases were with multiple lesions on omentum and mesentery, and in intraperitoneal and side of split of right hepatic lobe, respectively. The CT findings of 18 cases included 16 solid mass with calcifications in 3 of them, and 2 solid-cystic mass. After contrast enhancement, moderate or marked homogeneous or heterogeneous enhancement were shown in all the solid parts of tumor on dynamic CT. Mass can compress surround great vessel and tube-like structure. On pathological examination, the tumor was mainly composed of spindleshaped fibrous cells and inflammatory cells, and the immunohistochemically staining for SMA was observed positively. Conclusion CT can provide specific information for diagnosis of inflammatory myofibroblastic tumor, yet definite diagnosis relies on pathology.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2011年第1期73-76,共4页
Chinese Journal of Radiology
