Bilateral renal cysts and right renal cystic lesion inadequately characterize on noncontrast CT ABDOMEN:LIVER, BILIARY TRACT: No significant abnormality noted.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: Incomplete evaluation given lack of intravenous contrast. There are multiple bilateral renal lesions, some with the appearance of simple cysts with homogeneous T2 signal seen, others are more complex and are T2 hypointense/T1 hyperintense. The largest lesion is in the right mid pole and measures 4.4 x 3.4 cm (series 6 image 22, series 9 image 21), previously measuring 4.1 x 3.4 cm on CT. Thin internal septations (as opposed to multiple cysts next to one another) suggested. There are several foci of T1 hyperintensity and scattered fluid fluid levels within several of the renal lesions, consistent with hemorrhage or proteinaceous material. Overall the lesions appear grossly unchanged in size over the interval.RETROPERITONEUM, LYMPH NODES: No lymphadenopathy.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: No significant abnormality noted.
Incompletely evaluated renal lesions given the lack of intravenous contrast. Overall, the lesions are grossly unchanged in size and include simple cysts and complex cysts containing hemorrhage or proteinaceous material. Continued surveillance is recommended in 6-12 months using contrast enhanced MRI as the patient's renal function permits. Special attention should be given to the right mid pole lesion due to its heterogeneity, size and suggestion of thin internal septations.