Avila N A, Premkumar A, Merke D P
Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892-1182, USA.
AJR Am J Roentgenol. 1999 Apr;172(4):1003-6. doi: 10.2214/ajr.172.4.10587136.
The purpose of our study was to describe the MR features of testicular adrenal rest tissue in patients with congenital adrenal hyperplasia and to compare the usefulness of MR imaging with that of sonography for the detection of testicular adrenal rest tissue.
Nineteen patients with congenital adrenal hyperplasia underwent MR imaging and gray-scale and color Doppler sonography of the testicles during the same visit to our institution. Findings were compared.
MR features of testicular adrenal rest tissue included the following: isointensity (71% of the masses) and slight hyperintensity (29% of the masses) relative to normal testicular tissue on T1-weighted images; hypointensity relative to normal testicular tissue on T2-weighted images (100% of the masses); and diffuse enhancement on contrast-enhanced T1-weighted images (85% of the masses). MR imaging and sonography revealed the testicular lesions equally well. Eleven (58%) of 19 patients had normal findings on MR imaging and sonography. Eight (42%) of 19 patients had 14 intratesticular masses detected by both imaging techniques.
MR imaging and sonography are equally useful in the detection of testicular adrenal rest tissue. Because sonography is more accessible to most institutions and is less expensive, it is the imaging technique of choice for the detection of testicular adrenal rest tissue.
我们研究的目的是描述先天性肾上腺皮质增生症患者睾丸肾上腺残余组织的磁共振成像（MR）特征，并比较MR成像与超声检查在检测睾丸肾上腺残余组织方面的效用。
19例先天性肾上腺皮质增生症患者在我院就诊时接受了睾丸的MR成像、灰阶及彩色多普勒超声检查。对检查结果进行比较。
睾丸肾上腺残余组织的MR特征如下：在T1加权图像上相对于正常睾丸组织呈等信号（71%的肿块）及轻度高信号（29%的肿块）；在T2加权图像上相对于正常睾丸组织呈低信号（100%的肿块）；在对比增强T1加权图像上呈弥漫性强化（85%的肿块）。MR成像和超声检查对睾丸病变的显示同样良好。19例患者中有11例（58%）MR成像和超声检查结果正常。19例患者中有8例（42%）通过两种成像技术均检测到14个睾丸内肿块。
MR成像和超声检查在检测睾丸肾上腺残余组织方面同样有用。由于超声检查对大多数机构来说更容易获得且费用较低，因此它是检测睾丸肾上腺残余组织的首选成像技术。
