dilated renal tubules abnormal distal convoluted tubule morphology dilated distal convoluted tubules dilated distal convoluted renal tubules MP:0009051 stretched or widened aperture of the luminal space of the convoluted portion of the duct system of the nephron between the ascending portion of the loop of Henle and the collecting duct system in the kidney cortex dilated distal renal tubules distal convoluted tubules dilation distal renal tubule dilation distal convoluted tubule ectasia dilated distal convoluted kidney tubules MPheno.ontology