腹外硬纤维瘤的磁共振成像及闪烁扫描特征

MRI and scintigraphic features of extraabdominal desmoid tumors.

作者信息

Kobayashi H, Kotoura Y, Hosono M, Tsuboyama T, Sakahara H, Endo K, Konishi J

机构信息

Department of Radiology and Nuclear Medicine, Kyoto University, Japan.

出版信息

Clin Imaging. 1997 Jan-Feb;21(1):35-9. doi: 10.1016/0899-7071(95)00067-4.

DOI:10.1016/0899-7071(95)00067-4

PMID:9117929

Abstract

To determine whether extraabdominal desmoid can be correctly diagnosed using both magnetic resonance imaging (MRI) and scintigraphy with pentavalent technetium-99m dimercaptosuccinic acid and gallium-67 citrate, MRI (T1- and T2-weighted images) and scintigraphy were performed in 18 patients with 27 histologically proved extraabdominal desmoid tumors. The extraabdominal desmoid tumors were characterized by positive uptake of pentavalent technetium-99m dimercaptosuccinic acid and lack of uptake of gallium-67 citrate on scintigraphy. These tumors were isointense to skeletal muscle on T1-weighted MRIs and hyperintense on T2-weighted images. They also displayed septum-like internal inhomogeneity and surrounding hypointense capsular band. The combination of scintigraphy and MRI is of value in correctly diagnosing extraabdominal desmoid tumors except in the rare case of fibrotic verylow-grade sarcoma.

摘要

为了确定使用磁共振成像（MRI）以及用五价锝-99m二巯基丁二酸和枸橼酸镓进行闪烁扫描能否正确诊断腹外硬纤维瘤，对18例患有27个经组织学证实的腹外硬纤维瘤肿瘤的患者进行了MRI（T1加权和T2加权图像）和闪烁扫描。腹外硬纤维瘤肿瘤在闪烁扫描中的特征是五价锝-99m二巯基丁二酸摄取阳性而枸橼酸镓摄取阴性。这些肿瘤在T1加权MRI上与骨骼肌信号强度相等，在T2加权图像上呈高信号。它们还表现出间隔样内部不均匀性以及周围低信号的包膜带。闪烁扫描和MRI相结合对于正确诊断腹外硬纤维瘤肿瘤具有价值，但在罕见的纤维化极低级别肉瘤病例中除外。