According to the literature, ADC is also related to cell membrane permeability for water molecules.It is well known that cellular water transport depends on aquaporins (AQPs).In general,the expression of aquaporins might differ in several pathologic disorders. With reference to this fact,we hypothesize that AQPs expression may influence ADC in thymic epithelial tumors(TETs).Therefore,the aim of the present study is to analyze possible associations between ADC from ultra-high b-values and AQPs expression(ADCuh) in TETs and to use ADCuh to identify the pathological type of tumor.