A hydrocele is a pocket of fluid around a testicle. A hernia is part of the belly’s contents, such as a loop of intestine, pushing into the groin. “Hydrocele hernia” describes two problems that often share one cause: a small passage from the belly to the scrotum that normally seals before birth.1PubMed. Nonobliteration of the Processus Vaginalis: Sonography of Related Abnormalities in Children Whether that passage lets through only fluid or intestine as well shapes how worried to be and whether surgery is needed. Hydroceles in babies often fade on their own, but hernias generally need repair, and adults get hydroceles for different reasons entirely.
Why Hydroceles and Hernias Share One Cause
Before birth, a pouch of belly lining travels down into the scrotum along with the testicle. That pouch normally seals off before birth or soon after. When it stays open, it can cause a range of problems, including hydroceles and groin hernias.2PubMed. Nonobliteration of the Processus Vaginalis: Sonography of Related Abnormalities in Children The channel is also linked to fluid cysts along the spermatic cord and to a testicle that later rises out of the scrotum.3PubMed Central. Persistence of the processus vaginalis and its related disorders Girls can have the same channel problem. It shows up as a groin lump, sometimes a fluid cyst called a canal of Nuck cyst, rather than as a scrotal swelling.4PubMed Central. Persistence of the processus vaginalis and its related disorders
The size of the opening largely decides what happens. A pinhole opening lets only belly fluid trickle down, which makes a hydrocele. A wider opening lets a loop of intestine slide down, which makes a hernia. Both can occur together, with fluid and bowel in the same sac. That’s why doctors check for a hernia whenever they find a hydrocele in a child.
Types of Hydrocele and How They Behave
A communicating hydrocele stays linked to the belly through the open channel, so fluid can flow in and out. It often looks smaller in the morning and larger after a day of activity or crying. A noncommunicating hydrocele is a closed pocket that stays about the same size.5PubMed. Nonobliteration of the Processus Vaginalis: Sonography of Related Abnormalities in Children A rarer form, the abdominoscrotal hydrocele, stretches from the scrotum up into the lower belly in an hourglass shape.6PubMed Central. Abdominoscrotal Haematocele in an Adult and Its Successful Treatment
For a parent, the pattern of size change is a useful clue. Swelling that comes and goes over a day points to a hydrocele that connects to the belly, and that type is more likely to need surgery because the opening may let a hernia form. A swelling that hasn’t changed for months is more likely a sealed pocket. Adults rarely have the open birth channel to blame. Instead, the lining around the testicle makes more fluid than it absorbs, often after irritation. In older children and adults, injury to the scrotum or infection is typically the cause.7Advocate Health Care. Hydrocele: Causes, Symptoms and Treatment Hydroceles can also follow operations such as hernia or varicocele repair, or occasionally signal a testicular tumor.8UroHealth Partners. Hydrocele Causes & Treatments
In tropical regions, a parasitic infection called lymphatic filariasis has left about 25 million men with hydroceles.9World Health Organization. Lymphatic filariasis10PubMed. Filarial hydrocele: a neglected condition of a neglected tropical disease
Symptoms You Might Notice
A hydrocele usually feels like a soft, smooth, water-filled balloon around one testicle, and it rarely hurts. An abdominoscrotal hydrocele can cause no symptoms apart from swelling of variable size.11PubMed Central. Abdominoscrotal Haematocele in an Adult and Its Successful Treatment A hernia, by contrast, shows as a bulge in the groin or scrotum that grows with crying, coughing, or straining and may flatten when lying down. A hydrocele that connects to the belly can also partly empty when lying flat.12PubMed Central. Abdominoscrotal Haematocele in an Adult and Its Successful Treatment Changes with position alone can’t tell you which one you have, so a doctor’s exam is needed.
Some signs call for same-day care:
- A groin bulge that becomes hard, tender, or won’t go back in
- A baby with a swelling who is vomiting, unusually fussy, or refusing feeds
- Redness or discoloration over the swelling
- Sudden severe scrotal pain, which can mean the testicle has twisted rather than a hydrocele
Adults more often notice heaviness or dragging than pain. A large hydrocele can make walking, wearing clothes, and sex uncomfortable. Pain, fever, or a hard lump inside the testicle suggests something else and needs prompt review.
Before the appointment, jot down when the swelling appeared and whether it changes size. Photos at its largest and smallest are helpful, as is a note of any recent injury, infection, or surgery in the area.
How Doctors Diagnose It
Doctors feel the swelling and often shine a light through it. Fluid usually glows, while intestine usually blocks the light, though this test isn’t foolproof, especially in babies. When the exam is unclear, a scrotal ultrasound can show fluid, separate it from the testicle, and check blood flow.13PubMed Central. Common and Uncommon Presentation of Fluid within the Scrotal Spaces It can also tell a hydrocele apart from cysts, a hernia, or blood collected in the scrotum.14PubMed Central. Common and Uncommon Presentation of Fluid within the Scrotal Spaces Doctors may also rub the groin cords between their fingers, feeling for a slippery “silk glove” texture that can be one clue to an open channel.15PubMed. Prevention of unnecessary contralateral exploration using the silk glove sign (SGS) in pediatric patients with unilateral inguinal hernia16PubMed. Prevention of unnecessary contralateral exploration using the silk glove sign (SGS) in pediatric patients with unilateral inguinal hernia17PubMed. Prevention of unnecessary contralateral exploration using the silk glove sign (SGS) in pediatric patients with unilateral inguinal hernia The exam is quick and painless, and ultrasound uses gel with no needles or radiation. Doctors look at the opposite side because the same channel can stay open on both sides, and finding it early can avoid a second operation later.
Is It Dangerous
The biggest concern with infant hernias is incarceration, meaning bowel gets stuck in the groin.18PubMed. Pediatric hernias and hydroceles A trapped hernia can cut off a loop’s blood supply, which is why baby hernias are repaired rather than watched. A plain hydrocele contains only fluid and doesn’t carry that risk.
A soft, painless, unchanged swelling can wait for a routine appointment. Don’t try to forcefully push a painful bulge back in at home.
Large abdominoscrotal hydroceles can press on nearby structures, bleed, become infected, or twist.19African Journal of Urology. Abdominoscrotal hydrocele: A systematic review and proposed clinical grading Very large neglected hydroceles can affect fertility, sex, and the ability to work.20PubMed Central. Giant hydrocele–an epitome of neglect Among men with filarial hydroceles, nearly all described frustration with sex and most avoided it because of pain.21PubMed Central. Marriage, Sex, and Hydrocele: An Ethnographic Study on the Effect of Filarial Hydrocele on Conjugal Life and Marriageability from Orissa, India Size tends to grow over years, so earlier treatment is simpler, and treatment can restore comfort and sexual function.
Waiting It Out in Babies
In infants with a connected hydrocele, about 6 in 10 cleared up without surgery within 18 months.22Egyptian Pediatric Association Gazette. Watchful waiting for communicating hydrocoele in infants The other 4 in 10 eventually needed an operation.23Egyptian Pediatric Association Gazette. Watchful waiting for communicating hydrocoele in infants The large hourglass type that reaches into the belly resolves on its own only about a quarter of the time.24PubMed. Early Surgery Versus Watchful Waiting Strategy for Infantile Abdominoscrotal Hydrocele When that type did shrink, it took around 2 years on average.25PubMed. Early Surgery Versus Watchful Waiting Strategy for Infantile Abdominoscrotal Hydrocele
Watchful waiting means regular checks with the pediatrician to measure the swelling and to watch for a hernia appearing alongside it. Surgery is usually considered if the hydrocele persists past 1 to 2 years or keeps growing. No creams, binding, or draining at home will help.
Waiting stops if a hernia is found or the swelling becomes very large or tense. A hydrocele that appears new in an older child is also less likely to close on its own.
Surgery for Children
Surgeons close the open channel high in the groin and remove the fluid, which also fixes or prevents a hernia. In one children’s center, hydroceles came back after about 7% of open repairs but none after keyhole repairs.26PubMed Central. Laparoscopic vs. Open Repair Surgery for the Treatment of Communicating Hydrocele in Children: A Retrospective Study From a Single Center Lingering swelling was more common after open surgery, about 10% versus under 2%.27PubMed Central. Laparoscopic vs. Open Repair Surgery for the Treatment of Communicating Hydrocele in Children: A Retrospective Study From a Single Center Another comparison of keyhole and scrotal-incision methods found similar results, with recurrence under 1%.28PubMed. A comparison between totally laparoscopic hydrocelectomy and scrotal incision hydrocelectomy with laparoscopic high ligation for pediatric cord hydrocele
The operation is done under general anesthesia, usually as day surgery, and most children go home the same day. The incisions are small: in the groin for open surgery, or tiny ones at the belly button for keyhole. Mild soreness for a few days is normal.
Treatment for Adults
Surgery is not needed for a small, painless hydrocele once a tumor has been ruled out. Discomfort, size, or an effect on sex are good reasons to go ahead.
Hydrocele surgery, called hydrocelectomy, removes or folds the fluid-making lining through a scrotal cut.29PubMed Central. The Western snip, stitch, and tug hydrocelectomy: How I do it The two most common methods are folding the sac (Lord’s) or cutting it and turning it inside out (Jaboulay).30PubMed Central. The Western snip, stitch, and tug hydrocelectomy: How I do it In one large group of adults, about 6% needed repeat surgery, with no difference between methods.31PubMed. Comparison of Recurrence and Postoperative Complications Between 3 Different Techniques for Surgical Repair of Idiopathic Hydrocele Complications such as bleeding, pain, or infection happened in about 12%, least often with Lord’s method.32PubMed. Comparison of Recurrence and Postoperative Complications Between 3 Different Techniques for Surgical Repair of Idiopathic Hydrocele Removing the sac with a heat-sealing tool led to less swelling and shorter stays than Jaboulay’s method in one trial.33PubMed. Jaboulay’s technique contrasted with a novel hydrocelectomy technique using a vessel sealer in the treatment of adult hydrocele: a prospective randomized study After surgery, about 1 in 20 men needed a second operation within 3 months, nearly always for bleeding.34PubMed Central. Risk of Complications After Hydrocele Surgery: A Retrospective Multicenter Study in Helsinki Metropolitan Area Rarely, the testicle had to be removed because it lost its blood supply.35PubMed Central. Risk of Complications After Hydrocele Surgery: A Retrospective Multicenter Study in Helsinki Metropolitan Area That makes it worth asking about stopping blood thinners before surgery.
The fluid can instead be drawn out with a needle and a chemical injected to seal the space. About a third of men had the hydrocele return within 3 months after this.36PubMed. Comparison of aspiration-sclerotherapy with hydrocelectomy in the management of hydrocele: a prospective randomized study Draining is cheaper with fewer complications but less satisfying than surgery,37PubMed. Comparison of aspiration-sclerotherapy with hydrocelectomy in the management of hydrocele: a prospective randomized study and it may suit men who can’t have surgery.
When an adult has both a hernia and a hydrocele, surgeons can repair the hernia and drain the hydrocele in one operation.38Journal of Surgery and Medicine. Inguinal herniation associated with hydrocele
Recovery After Surgery
After adult surgery, avoid running and strenuous exercise for 2 to 3 weeks. Don’t lift more than 10 pounds for 4 to 6 weeks.39Urology Group Virginia. Hydrocele Repair – Adult Postop Instructions Ice the scrotum the first day, 20 minutes on and 5 off, and wear a jockstrap or fitted underwear for about 2 weeks.40Urology Group Virginia. Hydrocele Repair – Adult Postop Instructions You can drive once you’re off narcotic pain medicine.41Urology Group Virginia. Hydrocele Repair – Adult Postop Instructions
Swelling and bruising of the scrotum for days to weeks is normal, and the swelling may look worse before it improves. Fast-growing, tense swelling needs a call, since bleeding is the main complication.
Children should stay off straddle toys like bikes and rocking horses until the follow-up visit.42University of Mississippi Medical Center. What to Expect After Hernia/Hydrocele Surgery At home, simple pain relief and quiet play are usually enough. Loose clothing helps, and the wound should be kept dry as instructed. Fever or redness around the wound warrants a call.