When you change your newborn baby's diaper, have you noticed that one side of his scrotum (balls) is a little bigger than the other? Sometimes the swelling goes down in the morning, but as the day goes on, especially when the baby is fussing or crying, the swelling seems to increase? Many parents are a little scared when they see this, and it's normal. But most of the time, it's not something to be afraid of. Today, we're talking about this condition that many babies have, which is called Communicating Hydrocele .
Simply put, what is this Communicating Hydrocele?
Okay, let's keep this very simple. A hydrocele is a sac-like fluid-filled sac that forms around the testicle. Now you might be asking, "So what is this 'Communicating'?" That's the most important thing.
Imagine, inside our abdomen (abdominal cavity) there is a fluid along with organs like our intestines and liver. When the baby is in the mother's womb, the testicles first develop inside the baby's abdomen. Then they gradually descend and reach the scrotum. As they descend, a small tube-like path is formed from the abdomen to the scrotum. In medicine, we call this ``processus vaginalis``. Usually, this path closes automatically before or after the baby is born.
But in some babies, this passage does not close completely, leaving a small hole. Through that hole, the fluid in the abdomen comes and collects around the scrotum. This is called a communicating hydrocele because there is a "connection" or "communication" with the fluid in the abdomen.
This is like the waves on a beach coming and going. When the baby stands up and squirms, the pressure in the belly increases, causing the fluid to come down and the swelling to get bigger. When the baby sleeps, the fluid goes back into the belly, causing the swelling to shrink.
What is the difference between communicating and non-communicating hydrocele?
There is a small but important difference between these two types. It is very important for you to know this.
| Characteristic | Communicating Hydrocele | Non-communicating Hydrocele |
|---|---|---|
| Reason | The passage between the abdomen and the scrotum (processus vaginalis) remains open. | The passage is closed, but the fluid that initially accumulated remains because the body does not absorb it. |
| Nature of swelling | The amount changes throughout the day (less in the morning, more when you are awake). | The size is often stable or increases very slowly. |
| Seriousness | You need to be a little more careful, because there is a risk of hernia formation through this. | It is often harmless and heals on its own. |
What happens if left untreated? Risk of hernia
The main reason we should be a little more concerned about a `Communicating Hydrocele` is the risk of developing an inguinal hernia . If that opening we talked about remains open, not only the fluid in the abdomen, but sometimes a small part of the intestine can also come down through that hole and into the scrotum. That's what we call a hernia. If a hernia develops, it can sometimes become stuck, which is a serious condition that requires emergency surgery. Therefore, if you see a `Hydrocele`, it is imperative to show it to a doctor.
Who is most likely to see this condition?
This is actually a very common situation.
- Newborn boys: This condition can affect up to 50% of newborn boys. However, most cases resolve on their own without any treatment by the time the baby is about a year old.
- Older children and adults: It can sometimes occur in young children and adult men, but at that age it is more likely to occur in conjunction with a hernia.
What are the symptoms? How do you feel?
The main symptom of this is a painless swelling. It can feel like a small ball filled with water inside the scrotum.
| Age group | Visible symptoms |
|---|---|
| Newborn babies |
|
| Older children and adults |
Important: If an older child suddenly develops swelling and severe pain in the testicles, it could be an emergency called `Testicular Torsion`. If this happens , go to the nearest hospital's Emergency Department (ETU) without delay.
How does the doctor recognize this?
When you tell your doctor about your baby's swelling, the first thing he or she will do is examine your baby carefully. This can usually be diagnosed with a very simple test.
1. Physical examination: The doctor will feel the swelling. He will check if it is soft, hard, painful, and how big it is.
2. Transillumination: This is a very simple test. The doctor uses a small torch-like device to shine a light on the swollen testicle. If there is just fluid inside, the light will pass through it and appear pink. This will confirm that it is a hydrocele to a large extent.
3. Ultrasound Scan: Sometimes, if the swelling is very large, if there is a hard lump, or if there is even a slight suspicion of another problem (such as cancer), the doctor will order an `Ultrasound` scan. This is a painless and safe test.
How is it treated? Is surgery necessary?
This is where the best news for many parents lies.
Most of the time, about 90% of babies, no treatment is needed . By the time the baby is about a year old, the hole we talked about earlier will close on its own and the swelling will go away.
So the doctor usually takes the "let's see" approach. He'll tell you to bring the baby in for a checkup every few months.
So, when is a surgery (Hydrocelectomy) necessary?
- If the baby has not had any swelling for a year or two .
- If the swelling is very large or causing discomfort to the baby.
- If it is confirmed that there is a hernia (inguinal hernia) along with the hydrocele.
This surgery is not a big deal. Usually, a small incision (about 2 centimeters) is made in the groin area, the fluid inside is drained, and the hole is closed. This is a day surgery, which means you can take your baby home the same evening.
How to take care of the baby after surgery?
The baby will return to normal within a few days after the surgery, but you should be careful about these things for two to three weeks.
- Avoid heavy lifting: Don't let your baby sit on toys that have their legs outstretched, like rocking horses. Limit the amount of climbing, running, and jumping that your baby does.
- Take care of the incision: It is normal to have a little swelling around the incision. The doctor will prescribe pain medication.
- Call your doctor immediately: If you notice the following symptoms, call your doctor immediately.
- If the cut is bleeding
- If the pain increases
- If the baby has a fever
- If the swelling increases excessively
- If you notice a change in skin color (red, purple, brown, or black)
When you should definitely see a doctor
Although a simple hydrocele is not serious, if your baby has any of the following symptoms, it could be a sign of a strangulated hernia. So seek medical advice immediately.
| Warning signs to look out for | |
|---|---|
| Characteristic | Description |
| A swelling or lump | A sudden, hard lump in the scrotum or groin area. |
| Clear pain | The baby keeps crying, cannot be comforted, and cries even more when the swelling is touched. |
| Appetite | If the baby is not breastfeeding or eating as usual. |
| Vomiting | If the baby is vomiting for no apparent reason. |
| Decreased bowel movements | If the baby is not pooping as usual. |
Take-Home Message
- This is very common: Communicating Hydrocele is very common in newborn boys. So don't be unnecessarily alarmed.
- It heals on its own: In most cases, this condition gets better on its own without any treatment by the time the baby is one year old.
- Swelling changes: It is a symptom of this disease that swelling increases and decreases throughout the day. This is normal.
- Show it to the doctor : If you notice any swelling in your baby's testicles, it is imperative to show it to a doctor for an accurate diagnosis.
- Be aware of hernias: If you experience symptoms such as sudden pain, a hard lump, or vomiting, it could be a hernia, so go to the hospital immediately.


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