An inguinal (related to the groin) hernia occurs when a part of the intestine protrudes through a weakened spot in the abdominal muscles and into the groin area, while a hydrocele is a fluid-filled sac in the scrotum (the pouch that holds the testes.) Inguinal hernias are more common in boys than girls and tend to occur more often in premature babies.
Inguinal hernias and hydroceles are caused by a malformation of the inguinal canal. Before birth, the inguinal canal connects the abdominal cavity (belly) and a child’s normally descending sexual organs. This channel usually closes before or soon after birth, but if the connection remains open, fluid from the abdominal cavity can be trapped in the scrotum in boys and form a hydrocele.
If the connection is large enough, the intestine may be pushed into this space when a child strains causing a protrusion known as a hernia, which may look like a bulge or a lump in your child’s groin area.
The majority of hydroceles go away by themselves by the time your child is 12 to 18 months old.
However, if your child’s hydrocele is very large, changes in size, or persists, or if the hernia can be seen or felt or causes discomfort in your child, your Nemours pediatric urologist may recommend surgical repair. When the hernia bulges out, it is usually soft and not painful to the touch.
If you notice that your child’s hernia is firm, red or tender, you need to call your doctor right away. With hernias, the intestine can become trapped in the hernial sac and cause serious problems, including injury to the intestines and the blood vessels that supply blood to the testes.
Most inguinal hernia and hydrocele repairs are done on an outpatient basis in the operating room and take about one hour. Your Nemours urologist will explain the surgical procedure to you and answer any questions you may have. Recovery time is generally short and your child may be able to take part in usual play activities in a day or so.
From Nemours' KidsHealth
- Recurrent Urinary Tract Infections and Related Conditions
- A to Z: Cystitis
- A to Z: Edema
- A to Z: Neurogenic Bladder
- What Can I Do About My Child's Bedwetting?
- Urine Test: Dipstick
- X-Ray Exam: Voiding Cystourethrogram (VCUG)
- Urine Test: Protein
- Urine Test: Calcium
- Urine Test: Creatinine
- Ultrasound: Renal (Kidneys, Ureters, Bladder)
- Kidneys and Urinary Tract
- Urinary Tract Infections
Trusted External Resources
Ultrasound: Renal (Kidneys, Ureters, Bladder)
What It Is
A renal ultrasound is a safe and painless test that uses sound waves to make images of the kidneys, ureters, and bladder.
The kidneys are a pair of bean-shaped organs located toward the back of the abdominal cavity, just above the waist. They remove waste products from the blood and produce urine. The ureters are thin tubes that carry the urine from the kidneys to the bladder.
During the examination, an ultrasound machine sends sound waves into the kidney area and images are recorded on a computer. The black-and-white images show the internal structure of the kidneys and related organs.
Why It's Done
Doctors order renal ultrasounds when there's a concern about certain types of kidney or bladder problems. Renal ultrasound tests can show:
- the size of the kidneys
- signs of injury to the kidneys
- abnormalities present since birth
- the presence of blockages or kidney stones
- complications of a urinary tract infection (UTI)
- cysts or tumors
Usually, you don't have to do anything special to prepare for a renal ultrasound, although the doctor may ask that your child not eat or drink anything for several hours before the test. Sometimes a renal ultrasound needs a child to have a full bladder; in this case, the doctor will give specific instructions on what to do.
You should tell the technician about any medicines your child is taking before the test begins.
The renal ultrasound will be done in the radiology department of a hospital or in a radiology center. Parents are usually able to accompany their child to provide reassurance and support. Your child will be asked to change into a cloth gown and lie on a table. The room is usually dark so the images can be seen clearly on the computer screen.
A technician (sonographer) trained in ultrasound imaging will spread a clear, warm gel on your child's abdomen over the kidney area. This gel helps with the transmission of the sound waves. The technician will then move a small wand (transducer) over the gel. The transducer emits high-frequency sound waves and a computer measures how the sound waves bounce back from inside the body. The computer changes those sound waves into images to be analyzed.
Sometimes a doctor will come in at the end of the test to meet your child and take a few more pictures. The procedure usually takes less than 30 minutes.
What to Expect
The renal ultrasound test is painless. Your child may feel a slight pressure on the abdomen as the transducer is moved over it. You'll need to tell your child to lie still during the procedure so the sound waves can reach the area effectively. The technician may ask your child to lie in different positions or hold his or her breath briefly.
Babies might cry in the ultrasound room, especially if they're restrained, but this won't interfere with the procedure.
Getting the Results
A radiologist (a doctor who is specially trained in reading and interpreting X-ray and ultrasound images) will interpret the ultrasound results and then give the information to the doctor. You and your doctor will go over the results. If the test results appear abnormal, your doctor may order further tests.
In an emergency, the results of an ultrasound can be available within a short period of time. Otherwise, results are usually ready in 1-2 days. In most cases, results can't be given directly to the patient or family at the time of the test.
No risks are associated with a renal ultrasound. Unlike X-rays, radiation isn't involved with this test.
Helping Your Child
Some younger children may be afraid of the machinery used for the ultrasound test. Explaining in simple terms how the renal ultrasound test will be conducted and why it's being done can help ease your child's fears. You can tell your child that the equipment takes pictures of his or her kidneys.
Encourage your child to ask the technician questions and to try to relax during the procedure, as tense muscles can make it more difficult to get accurate results.
If You Have Questions
If you have questions about the renal ultrasound, speak with your doctor. You can also talk to the technician before the exam.
Reviewed by: Rupal Christine Gupta, MD
Date reviewed: April 28, 2017