Joe V Q, Westesson P L
Department of Radiology, University of Rochester School of Medicine and Dentistry, New York 14642.
AJR Am J Roentgenol. 1994 Aug;163(2):433-8. doi: 10.2214/ajr.163.2.8037045.
The purpose of this investigation was to study the MR imaging characteristics of various histologic types of parotid gland tumors in order to determine if MR findings can be used to categorize these tumors.
We retrospectively studied the MR images and pathologic findings in 20 patients with a variety of tumors of the parotid gland. Fat-suppressed T1-weighted images, T2-weighted images, and contrast-enhanced fat-suppressed T1-weighted images were acquired with a 1.5-T MR imager and an anterior neck coil.
Carcinomas (n = 5) were characterized by infiltration into the muscles along the surface of the mandible and by contrast enhancement. Warthin's tumors (n = 4) showed areas of different signal intensity on T2-weighted images and did not enhance after injection of contrast material. Pleomorphic adenomas (n = 11) showed enhancement after injection of contrast material but did not infiltrate the muscles.
Our findings suggest that MR characteristics are helpful in categorizing parotid gland tumors according to histologic type.
本研究旨在探讨腮腺肿瘤不同组织学类型的磁共振成像（MR）特征，以确定MR表现能否用于这些肿瘤的分类。
我们回顾性研究了20例患有各种腮腺肿瘤患者的MR图像和病理结果。使用1.5-T MR成像仪和颈部前线圈采集脂肪抑制T1加权像、T2加权像以及对比增强脂肪抑制T1加权像。
癌（n = 5）的特征为沿下颌骨表面浸润肌肉并呈对比增强。沃辛瘤（n = 4）在T2加权像上显示不同信号强度区域，注射对比剂后无强化。多形性腺瘤（n = 11）注射对比剂后有强化，但未浸润肌肉。
我们的研究结果表明，MR特征有助于根据组织学类型对腮腺肿瘤进行分类。
