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Condition
Cystinuria is a relatively rare disease in which people inherit an inability to process an amino acid called cystine. Excess cystine winds up in the urine, where it can lead to the formation of stones in the bladder, kidneys, and ureters. Cystine stones …
Condition
What is meatal stenosis? Meatal stenosis is a narrowing of the opening of the urethra, the hole at the tip of the penis through which urine leaves the body. Who gets meatal stenosis? Meatal stenosis affects only circumcised males. The cause is thought to …
Condition
What are posterior urethral valves? Posterior urethral valves are obstructing flaps of tissue in the male urethra (the tube that carries urine from the bladder to the tip of the penis) that prevent normal urine flow from the bladder. They are the most …