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Sonographic appearance of oligomeganephronia. Left kidney (between cursors) is small (6.3 cm craniocaudal length) and isoechoic to spleen (asterisk), with poor corticomedullary differentiation, an appearance that is shared with many chronic renal diseases. Normal reniform shape is maintained. The right kidney (not shown) measured 6.1 cm in length and had a similar, non-specific sonographic appearance.
