Posterior urethral valves are a problem with the urethra in a boy. The valves partly block urine flow because not enough urine can get through them to leave the body. This can harm the urethra, bladder, ureters, and kidneys.

The epiglottis is a flap of cartilage at the base of the tongue at the very back of the throat. When the epiglottis becomes swollen and inflamed, it is called epiglottitis.

Detailed information on cystic fibrosis, including symptoms, diagnosis, treatment, and genetics

Detailed information on chronic respiratory disorders in children

A look at treatment options for cystic fibrosis.

Detailed information on nutrition and renal failure in children

Neurogenic bladder means the bladder doesn't work normally because of nerve damage. It causes a child to have problems with holding or releasing urine.

Here is information on nutrition and diet for children with nephrotic syndrome.

Chemotherapy is the use of medicines to treat cancer or kill cancer cells. Read on to learn more about what to expect when your child needs this treatment.

Detailed information on chemotherapy and managing chemotherapy side effects in children