腹膜后恶性间叶瘤：5例影像学表现

Retroperitoneal malignant mesenchymoma: imaging findings in five cases.

作者信息

Suzuki S, Furui S, Kokubo T, Moriyama N, Kohtake H, Takeshita K, Harasawa A, Sasaki Y, Yamauchi T, Shirai T, Ban S, Kikuchi Y

机构信息

Department of Radiology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173, Japan.

出版信息

Abdom Imaging. 1999 Jan-Feb;24(1):92-7. doi: 10.1007/s002619900449.

DOI:10.1007/s002619900449

PMID:9933683

Abstract

BACKGROUND

To describe computed tomographic (CT), magnetic resonance (MR), ultrasonographic (US), and angiographic findings of retroperitoneal malignant mesenchymoma with emphasis on CT findings.

METHODS

Five CT, four US, four angiography, and two MR studies were obtained in five patients with pathologically proven retroperitoneal malignant mesenchymoma.

RESULTS

Tumors were larger than 10 cm (n = 4), well-circumscribed and heterogeneous (n = 4), and with massive intratumorous calcifications (n = 3) on plain CT or US. Tumors showed heterogeneous enhancement on contrast-enhanced CT scans (n = 4) and moderate hypervascularity with heterogeneous staining on angiography (n = 3). Tumors were essentially hypointense on T1-weighted MR images (n = 2) and heterogeneous hyperintense on T2-weighted MR images (n = 2). Plain CT showed a fat-dense structure in a tumor in one patient.

CONCLUSIONS

The radiologic findings of large expansile heterogeneous masses in the retroperitoneum, especially with massive calcifications, were considered to be typical of malignant mesenchymomas.

摘要

背景

描述腹膜后恶性间叶瘤的计算机断层扫描（CT）、磁共振成像（MR）、超声（US）及血管造影表现，重点关注CT表现。

方法

对5例经病理证实的腹膜后恶性间叶瘤患者进行了5次CT、4次US、4次血管造影及2次MR检查。

结果

肿瘤直径大于10 cm（n = 4），边界清晰且密度不均（n = 4），平扫CT或US显示瘤内大量钙化（n = 3）。增强CT扫描肿瘤呈不均匀强化（n = 4），血管造影显示中度血供丰富且染色不均（n = 3）。T1加权MR图像上肿瘤基本呈低信号（n = 2），T2加权MR图像上呈不均匀高信号（n = 2）。1例患者的平扫CT显示肿瘤内有脂肪密度结构。