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53 year old female with chronic Lithium toxicity. Axial (left) and coronal (right) non-contrast Tru-FISP images through the kidneys show multiple hyperintense tiny corticomedullary cysts (arrows). The kidneys are symmetrically involved. (Parameters- TR: 3.9ms, TE: 1.9ms, FA: 60, NEX: 1, Slice thickness: 5mm, Field strength: 3T)
