References. 1  Shmerling RH. Approach to the patient with myalgia. http://www.uptodate.com/home. 2  LeBlond RF, et al., eds. The spine, pelvis and extremities. 3  Muscle cramps. Merck Manual Professional Version. 4  Sprains, strains and other soft tissue injuries. American Academy of Orthopaedic Surgeons.
Freebase(0.00 / 0 votes)Rate this definition: Hydronephrosis â literally water inside the kidney â refers to distension and dilation of the renal pelvis and calyces, usually caused by obstruction of the free flow of urine from the kidney. Untreated, it leads to progressive atrophy of the kidney.
Pyelonephritis: kidney bacterial infection. Hydronephrosis: obstruction of urine flow results in collection or the urine in the bladder and kidneys, increased pressure can cause damage. Chemical nephrosis: the ingestion of certain poisonous substances can cause renal failure.yelonephritis: kidney bacterial infection. Hydronephrosis: obstruction of urine flow results in collection or the urine in the bladder and kidneys, increased pressure can cause damage. Chemical nephrosis: the ingestion of certain poisonous substances can cause renal failure.