title: Efficacy of diffusion-weighted magnetic resonance imaging in follow-up patients treated with open partial cystectomy of liver hydatid cysts.
abstract: OBJECTIVE
  The aim of this study was to evaluate the efficacy of DWI in differentiation of patients with residual cavity and type 1 hydatid cyst (HC) in the liver.
  
  
  METHODS
  32 patients were included. 12 of these patients had type 1 HC and the remainders (n = 20) had postoperative residual cavities. In all patients, axial T2-weighted and DWI images were obtained. An apparent diffusion coefficient (ADC) map of the images was automatically generated and the ADC values were measured on this map for all patients. Mann-Whitney U test was used for comparison of continuous variables between two groups.
  
  
  RESULTS
  The mean diameters of type 1 hydatid cyst and residual cavity groups were 83.42 mm, 49.30 mm, respectively (P = 0.001). There were no significant differences in gender and age between the groups (both P > 0.05). The mean ADC values of type 1 hydatid cyst and residual cavity groups were 2.58 ± 0.13 × 10(-3) s/mm(2), 2.58 ± 0.16 × 10(-3) s/mm(2), respectively (P = 0.953).
  
  
  CONCLUSIONS
  DWI might not be suitable to differentiate the postoperative residual cavity from the type 1 hydatid cyst in the liver due to similarity of ADC values between postoperative residual cavity and type 1 hydatid cyst.
authors: Department of Radiology, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Ekrem
authors: E
authors: Karakas
authors: Department of General Surgery, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Ali
authors: A
authors: Uzunköy
authors: Department of Internal Medicine, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Emel Yigit
authors: EY
authors: Karakas
authors: Department of Radiology, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Mehmet
authors: M
authors: Gundogan
authors: Department of Radiology, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Omer
authors: O
authors: Karakas
authors: Department of Radiology, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Fatıma Nurefsan
authors: FN
authors: Boyaci
authors: Department of General Surgery, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Ahmet
authors: A
authors: Seker
authors: Department of Internal Medicine, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Turgay
authors: T
authors: Ulas
authors: Department of Radiology, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Hasan
authors: H
authors: Cece
authors: Department of General Surgery, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Abdullah
authors: A
authors: Ozgonul
authors: Department of Pediatric Surgery, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Muazzez
authors: M
authors: Cevik
authors: Department of General Surgery, Faculty of Medicine, Harran University Sanliurfa, Turkey.
authors: Yusuf
authors: Y
authors: Yucel
keywords: Hydatid cyst; diffusion-weighted magnetic resonance imaging; liver; recurrence