title: Uncommon adrenal masses: CT and MRI features with histopathologic correlation.
abstract: Adrenal glands are common sites of diseases. With dramatically increased use of computed tomography (CT) and magnetic resonance (MR) imaging, more and more uncommon adrenal masses have been detected incidentally at abdominal examinations performed for other purposes. In this article, uncommon adrenal masses are classified as cystic masses (endothelial cysts, epithelial cysts, parasitic cysts, and pseudocysts), solid masses (ganglioneuroma, ganglioneuroblastoma, extramedullary plasmacytoma (EMP), neurilemmoma, and lymphoma), fat-containing masses (myelolipoma, teratoma), and infectious masses (tuberculoma), and the imaging features of these uncommon masses are demonstrated. Although most of these lesions do not have specific imaging features, some fat-containing masses and cystic lesions present with characteristic appearances, such as myelolipoma, teratoma, and hydatid. Combination with histopathologic characteristic of these uncommon masses of adrenal gland, radiological features of these lesions on CT and MR imaging can be accurately understood with more confidences. Moreover, CT and MRI are highly accurate in localization of uncommon adrenal masses, and useful to guide surgical treatments.
authors.affiliation: Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
authors.forename: Ying-Kun
authors.initials: YK
authors.lastname: Guo
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Yang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Deng
authors.forename: En-Sen
authors.initials: ES
authors.lastname: Ma
authors.forename: Peng-Qiu
authors.initials: PQ
authors.lastname: Min
authors.forename: Xiao-Chun
authors.initials: XC
authors.lastname: Zhang
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis*; D000311:Adrenal Glands / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D003560:Cysts / Q000175:diagnosis; D006801:Humans; D033162:Incidental Findings; D008223:Lymphoma / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D018209:Myelolipoma / Q000175:diagnosis*; D009373:Neoplasms, Germ Cell and Embryonal / Q000175:diagnosis*; D035583:Rare Diseases; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014375:Tuberculoma / Q000175:diagnosis