Source:http://linkedlifedata.com/resource/umls/id/C0041956
MSH: Blockage in any part of the URETER causing obstruction of urine flow from the kidney to the URINARY BLADDER. The obstruction may be congenital, acquired, unilateral, bilateral, complete, partial, acute, or chronic. Depending on the degree and duration of the obstruction, clinical features vary greatly such as HYDRONEPHROSIS and obstructive nephropathy.,CSP: blockage or obstruction in the ureter, the fibromuscular tube which conveys urine from the kidney to the bladder.,NCI: Blockage of the normal flow of urine in the ureter.