Fibropapilloma in Pigs: Benign Skin Masses Owners May Notice

Quick Answer
  • Fibropapillomas are uncommon, usually benign skin growths that may appear as single or multiple wart-like or firm raised masses.
  • In pigs, reported lesions are rare and are most often described on the face or genital area, though any new lump should still be checked.
  • Many masses are not emergencies, but rapid growth, bleeding, ulceration, pain, discharge, or trouble walking, urinating, or eating means your pig should see your vet sooner.
  • Diagnosis usually requires a hands-on exam and may need cytology or biopsy because different skin diseases can look similar.
  • Some small, stable lesions may be monitored, while others are removed if they are irritated, enlarging, or in a location that causes rubbing or infection.
Estimated cost: $80–$1,800

What Is Fibropapilloma in Pigs?

Fibropapilloma is a benign skin growth made up of both surface skin tissue and supportive fibrous tissue. In plain terms, it is a lump or wart-like mass that a pet parent may notice while grooming, bathing, or checking their pig's skin. Veterinary references describe papillomas in pigs as very rare, with reported lesions sometimes found on the face or genitalia.

These growths are not the same thing as every other pig skin bump. A lump that looks harmless at home can still turn out to be a different condition, such as swinepox lesions, trauma-related scar tissue, abscesses, cysts, mange-related crusting, or a different type of tumor. That is why a visual guess is not enough.

The reassuring part is that fibropapillomas are considered benign, meaning they do not behave like aggressive cancers. Still, location matters. Even a benign mass can become a problem if it gets rubbed, bleeds, becomes infected, or interferes with normal movement or urination. Your vet can help decide whether monitoring or removal makes the most sense for your pig.

Symptoms of Fibropapilloma in Pigs

  • Single small raised skin mass
  • Multiple skin growths
  • Lesion on the face or genital area
  • Surface crusting, rubbing, or minor bleeding
  • Ulceration, discharge, or foul odor
  • Rapid enlargement or change in appearance
  • Pain, limping, trouble eating, or trouble urinating

Many fibropapillomas are found before they cause obvious discomfort. A small, stable lump with normal skin around it is often less urgent than a mass that is growing, bleeding, or getting caught on surfaces. Keep an eye on size, color, texture, and whether your pig seems bothered when the area is touched.

When to worry more: call your vet promptly if the mass changes quickly, opens up, smells bad, drains fluid, or sits near the eyes, mouth, anus, vulva, prepuce, or legs where it can interfere with daily function. If your pig seems painful, stops eating, or develops widespread skin lesions, do not assume it is a benign growth.

What Causes Fibropapilloma in Pigs?

The exact cause of an individual fibropapilloma is not always confirmed without tissue testing. In veterinary medicine, papillomas in many species are often linked to papillomaviruses, and Merck notes that multiple papillomas are usually caused by viruses. Merck also describes congenital fibropapillomatosis in piglets and notes it is likely infectious.

That said, pigs do not commonly develop these lesions. Because they are rare, your vet may also consider other explanations for a skin mass, including irritation, trauma, scar-like tissue, cysts, abscesses, parasites, poxvirus lesions, or other benign and malignant tumors.

Age and immune status may matter in some papilloma-type conditions across species, but there is not strong evidence that pet parents can prevent every case. The practical takeaway is this: if you notice a new lump, focus less on guessing the cause and more on documenting when it appeared, whether it is changing, and whether your pig is acting normally.

How Is Fibropapilloma in Pigs Diagnosed?

Diagnosis starts with a physical exam and a close look at the lesion's size, shape, location, and surface. Your vet will also ask how long the mass has been present, whether it has changed, and whether your pig has itching, pain, discharge, or other skin problems. Photos with dates can be very helpful.

Because many skin conditions can look alike, a visual exam alone may not be enough. Your vet may recommend cytology, a biopsy, or complete removal of the mass with histopathology. Histopathology is the lab review that confirms what kind of tissue is present and whether the growth is truly benign.

Additional testing depends on the case. If the lesion is ulcerated or infected, your vet may suggest culture or other skin testing. If there are many lesions or your pig seems unwell, they may also look for infectious or systemic causes. This stepwise approach helps match the workup to your pig's comfort, the lesion's behavior, and your goals.

Treatment Options for Fibropapilloma in Pigs

Spectrum of Care means you have options. Here are treatment tiers at different price points.

Budget-Conscious Care

$80–$250
Best for: Pet parents seeking evidence-based monitoring when the mass appears small, stable, and low-risk
  • Office exam with lesion measurement and photo documentation
  • Monitoring plan for a small, stable mass that is not painful or interfering with function
  • Home observation for growth, bleeding, rubbing, or discharge
  • Basic wound protection and husbandry changes if the area is being traumatized
Expected outcome: Often good if the lesion remains unchanged and is truly benign, but confirmation is limited without tissue testing.
Consider: Lowest upfront cost, but there is a chance of delayed diagnosis if the mass is actually a different condition or starts changing later.
Most Common

Recommended Standard Treatment

$300–$900
Best for: Most pigs with a new, changing, irritated, or uncertain skin mass where a diagnosis will guide next steps
  • Exam and lesion mapping
  • Fine-needle or surface sampling when feasible, or punch/incisional biopsy
  • Sedation as needed for safe handling
  • Histopathology submission to identify the mass
  • Targeted aftercare based on results
Expected outcome: Good for benign lesions once the diagnosis is confirmed and the mass is either monitored appropriately or removed if needed.
Consider: More informative than watchful waiting, but costs more and may still lead to a second procedure if full removal is recommended later.

Advanced / Critical Care

$900–$1,800
Best for: Complex cases, masses in high-friction or sensitive areas, recurrent lesions, or pet parents wanting definitive diagnosis and removal in one plan
  • Pre-anesthetic exam and bloodwork when indicated
  • Sedation or general anesthesia
  • Complete surgical removal of the mass
  • Histopathology of the entire lesion
  • Pain control, bandaging or wound care, and follow-up rechecks
  • Additional diagnostics for difficult locations, recurrent masses, or lesions affecting urination, eating, or mobility
Expected outcome: Usually favorable when a benign mass is fully removed, though outcome still depends on location, wound healing, and the final pathology report.
Consider: Highest cost and more intensive care, with anesthesia and recovery considerations, but it can provide the clearest diagnosis and fastest resolution for troublesome masses.

Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.

Questions to Ask Your Vet About Fibropapilloma in Pigs

Bring these questions to your vet appointment to get the most out of your visit.

  1. Does this mass look most consistent with a benign skin growth, or are there other conditions you are concerned about?
  2. Is monitoring reasonable for now, or do you recommend sampling or removal based on the location and appearance?
  3. What changes should make me schedule a recheck right away?
  4. Would a biopsy or full removal give us the most useful answer in my pig's case?
  5. If we monitor it, how often should I measure it or send updated photos?
  6. Could this lesion be infectious or contagious to other pigs?
  7. What kind of pain control, wound care, or activity restriction would be needed if you remove it?
  8. What is the expected cost range for monitoring, biopsy, and surgical removal at your hospital?

How to Prevent Fibropapilloma in Pigs

There is no guaranteed way to prevent every fibropapilloma, especially when the exact cause of a specific lesion is unclear. Still, good skin care and early observation can lower the chance that a small problem turns into a larger one. Check your pig's skin regularly, especially around the face, ears, belly, legs, and genital area.

Try to reduce repeated skin trauma. Smooth rough fencing, remove sharp edges, keep bedding clean and dry, and address rubbing or parasite concerns promptly with your vet. Good hygiene and lower skin irritation support healthier skin overall.

If you have more than one pig, isolate any animal with new or unexplained skin lesions until your vet advises otherwise. That is especially important because some infectious skin diseases in pigs can mimic benign masses. The best prevention tool is often early veterinary evaluation of any lump that is new, changing, or easy to injure.

Find a Vet Near You