title: [Distinguishing benign from malignant incidental adrenal lesions in enhanced CT imaging].
abstract: OBJECTIVE
  To characterize the differences in radiologic features between benign and malignant adrenal lesions.
  
  
  METHODS
  Enhanced multiple-slice spiral CT images of 99 patients with adrenal tumors were reviewed retrospectively, investigating into morphological features of different kinds of adrenal lesions with Wash-in Amplitude (WA, venous phase attenuation-unenhanced attenuation) and relative wash-in ratio (RWR, WA/artery phase attenuation).
  
  
  RESULTS
  A combination of threshold in diameter = 3.2 cm, unenhanced attenuation = 24 HU, and RWR value = 0.879 produced 94.28% sensitivity and 98.43% specificity in diagnosing adenomas.
  
  
  CONCLUSIONS
  Enhanced CT imaging improves diagnostic accuracy of incidental adrenal lesions.
authors.affiliation: Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Yang
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhao
authors.forename: Ya-Jun
authors.initials: YJ
authors.lastname: Hu
authors.forename: Yin
authors.initials: Y
authors.lastname: Zhou
authors.forename: Jiao
authors.initials: J
authors.lastname: Bai
authors.forename: Rong-Bo
authors.initials: RB
authors.lastname: Liu
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging* / Q000473:pathology; D000293:Adolescent; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010673:Pheochromocytoma / Q000000981:diagnostic imaging; D036542:Tomography, Spiral Computed / Q000379:methods*; D055815:Young Adult