A description of specific features of CT-MRI in rare patient with perirenal non-Hodgkin’s lymphoma is presented in the article. CT scan was used to determine the accumulation of contrast medium and pathological vessels along the right kidney’s border. Diffusion weighted MRI revealed the low values of the measured diffusion coefficient (MDC) and high accumulation index of the paramagnetic in the tumor tissue (0.59–0.62). The specific features of perirenal non-Hodgkin’s lymphoma on CT/MRI, an evaluation of the tumor’s volume and stage, and signs of malignancy are described.

Keywords: perirenal space, computer tomography, non-Hodgkin lymphoma, magnetic resonance imaging