Elsayes Khaled M, Staveteig Paul T, Narra Vamsidhar R, Chen Zong-Ming, Moustafa Yahia L, Brown Jeffrey
Department of Radiology, University of Michigan Health Center, Ann Arbor, MI 48109-0030, USA.
Curr Probl Diagn Radiol. 2007 May-Jun;36(3):97-106. doi: 10.1067/j.cpradiol.2006.12.003.
Primary retroperitoneal masses are a rare but diverse group of benign and malignant processes. Magnetic resonance (MR) imaging is playing an increasing role in evaluating retroperitoneal soft-tissue masses. Since the MR imaging features of most retroperitoneal soft-tissue masses are nonspecific, prediction of a specific histologic diagnosis remains a challenge for the radiologist. However, there are certain specific MR imaging appearances that are helpful. Dynamic enhancement patterns can reflect the vascularity of masses, differentiating benign from malignant soft-tissue masses. This article pictorially illustrates the MR imaging features of various common and uncommon retroperitoneal masses.
原发性腹膜后肿块是一组罕见但多样的良性和恶性病变。磁共振（MR）成像在评估腹膜后软组织肿块中发挥着越来越重要的作用。由于大多数腹膜后软组织肿块的MR成像特征不具有特异性，因此对放射科医生来说，预测特定的组织学诊断仍然是一项挑战。然而，某些特定的MR成像表现是有帮助的。动态增强模式可以反映肿块的血管情况，有助于区分良性和恶性软组织肿块。本文通过图片展示了各种常见和不常见腹膜后肿块的MR成像特征。
