Diffusion weighted imaging in differentiating malignant and benign neuroblastic tumors

作者：Serin Halil Ibrahim^*; Gorkem Sureyya Burcu^*; Doganay Selim; CAnracAn Saliha; Unal Ekrem; Guzel Mahmut; Kucuk Ahmet; Kurtsoy Ali; Coskun Abdulhakim

来源：Japanese Journal of Radiology, 2016, 34(9): 620-624.

DOI：10.1007/s11604-016-0565-z

• Neuroblastoma
• Ganglioneuroblastoma
• Ganglioneuroma
• DWI
• ADC

Our aim was to assess diffusion weighted imaging (DWI) of neuroblastic tumors and whether apparent diffusion coefficient (ADC) value may have a role in discrimination among neuroblastoma, ganglioneuroblastoma and ganglioneuroma.
The DWIs (b = 0-800 s/mm(2)) of 24 children (13 girls, 11 boys) who were diagnosed neuroblastic tumors on histopathological examination (neuroblastoma = 15, ganglioneuroblastoma = 5, ganglioneuroma = 4) were evaluated retrospectively. The ADC maps were performed by drawing freehand ROI on PACS (Sectra Workstation IDS7, Linkoping, Sweden).
We observed a significant decrease in ADC value of neuroblastomas 0.869 +/- A 0.179 x 10(-3) mm(2)/s compared to ganglioneuroblastomas 0.97 +/- A 0.203 x 10(-3) mm(2)/s and ganglioneuromas 1.147 +/- A 0.299 x 10(-3) mm(2)/s (p = 0.026). There was no significant difference in between ganglioneuroblastoma and ganglioneuroma (p = 0.16). In detecting neuroblastomas; the sensitivity, specificity, negative and positive predictive values of ADC were 74, 67, 78.6, 66 % respectively with a cut-off value of 0.93 x 10(-3) mm(2)/s.
Our study stands out as the most comprehensive study with larger sample size on this topic. Moreover, we are able to suggest a cut-off value which can discriminate neuroblastoma from ganglioneuroblastoma and ganglioneuroma. We believe that ADC will evolve to an objective, quantitative measurement in discrimination among malignant and benign neuroblastic tumors.

• 出版日期2016-9