title: CT findings of adrenal schwannoma.
abstract: OBJECTIVE
  To analyse the computed tomography (CT) imaging features of patients with adrenal schwannoma.
  
  
  METHODS
  Eight cases of adrenal schwannoma confirmed by histopathology were included in this study. All eight patients had undergone multiphase CT examinations. The features of the adrenal schwannoma in the CT images were analysed retrospectively in detail, including size, shape, margin, radiodensity, calcification, and enhancement pattern.
  
  
  RESULTS
  There were six male and two female patients, with a median age of 44.5 years (range, 25-52 years). Two patients complained of right flank pain, and two with left upper abdominal discomfort, while the remaining patients were diagnosed by routine ultrasound examinations. On unenhanced CT images, all cases of adrenal schwannoma were well circumscribed, rounded or oval, heterogeneous masses with cystic components, with two cases exhibiting calcification, and three cases with septa. On enhanced CT images, all cases displayed mild heterogeneous enhancement of the tumour during the arterial phase, and progressive enhancement during the portal venous phase and equilibrium phase.
  
  
  CONCLUSIONS
  Adrenal schwannoma commonly presents as a well-defined unilateral mass with cystic degeneration, septa, and a characteristic progressive contrast-enhancement pattern on multiphase enhanced scans.
authors.affiliation: Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China.
authors.forename: Y-M
authors.initials: YM
authors.lastname: Zhang
authors.affiliation: Department of Orthopeadic Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, People's Republic of China.
authors.forename: P-F
authors.initials: PF
authors.lastname: Lei
authors.affiliation: Department of Ultrasonography, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha 410008, People's Republic of China.
authors.forename: M-N
authors.initials: MN
authors.lastname: Chen
authors.affiliation: Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China.
authors.forename: X-F
authors.initials: XF
authors.lastname: Lv
authors.affiliation: Department of Pathology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China.
authors.forename: Y-H
authors.initials: YH
authors.lastname: Ling
authors.affiliation: Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China.
authors.forename: P-Q
authors.initials: PQ
authors.lastname: Cai
authors.affiliation: Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China. Electronic address: gaojm12@163.com.
authors.forename: J-M
authors.initials: JM
authors.lastname: Gao
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed