Papillomatous nevus: symptoms, images, AI analysis 🟢 ICD-10: D22 | ICD-11: 2F20

Papillomatous nevus is a benign skin lesion that appears as a raised “mole” with an uneven or bumpy surface. It usually develops over time and is not contagious.

These nevi may appear during adolescence and gradually increase in number. They are often dark or skin-colored and may vary in shape and size.

In most cases, papillomatous nevus is harmless and is not associated with a high risk of skin cancer.

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What to Do if You Suspect a Papillomatous Nevus

If you notice a lesion on your skin resembling a papillomatous nevus, it is best to consult a dermatologist.

The doctor will examine the skin and, if necessary, perform dermoscopy—a method in which the lesion is examined under magnification. This helps distinguish a benign nevus from other skin lesions.

If there is diagnostic uncertainty or signs of changes, additional tests, including a biopsy (analysis of a small tissue sample), may be required.

Important: Do not remove or traumatize these lesions yourself. Even if the nevus does not cause discomfort, regular monitoring helps detect changes early and avoid complications.

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Appearance

Papillomatous nevus usually appears as a raised lesion with a bumpy or uneven surface, sometimes resembling a wart-like growth.

It can be:

• Round or oval in shape
• With well-defined borders
• Skin-colored, brown, or nearly black

The surface may be smooth or highly bumpy—especially in larger nevi. Some lesions may resemble a “cauliflower” due to uneven structure.

Size: usually up to 1 cm, though larger nevi can occur rarely.

Common locations:

• Face
• Scalp
• Neck
• Trunk

Sometimes hair may grow from the nevus—this is normal for certain types.

Over time, the nevus may slightly enlarge or change in appearance, but usually remains benign.

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Main Symptoms

Papillomatous nevus generally does not cause discomfort.

Key features:

• Raised lesion on the skin
• Bumpy or uneven surface
• Uniform or slightly irregular coloration
• No pain or itching

Discomfort may occur if the nevus is rubbed by clothing or accidentally injured.

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Causes

The exact cause is unknown, but several factors may contribute.

External factors:

• Ultraviolet (UV) exposure (sun, tanning beds)

Internal factors:

• Genetic predisposition
• Hormonal changes (e.g., during adolescence or pregnancy)
• Influence of various hormones (thyroid, adrenal)
• Skin injuries or previous illnesses

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How It Develops

Papillomatous nevus forms from nevus cells—skin cells that produce pigment (melanin).

Under various factors, these cells divide more actively, forming a raised lesion.

The process remains benign: cells do not spread to other tissues and do not behave like cancer.

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Forms and Types

Papillomatous nevi vary in appearance and degree of bumpiness.

Larger nevi often have a pronounced “wart-like” surface.

For patients, these differences are usually not critical; the treatment or monitoring strategy is determined individually by the doctor.

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When to See a Doctor

Consult a doctor if:

• The nevus grows rapidly
• Color, shape, or borders change
• Itching, pain, or bleeding occurs
• The lesion is traumatized
• The nevus is constantly rubbed by clothing or accessories

Even without these signs, periodic check-ups are recommended, especially if multiple nevi are present.

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Treatment

In most cases, papillomatous nevus does not require urgent treatment and can be monitored.

If necessary, the doctor may recommend removal.

Primary method: surgical removal with subsequent histological examination to confirm the diagnosis.

Methods that destroy tissue (e.g., laser or cryodestruction) are usually not recommended, as they prevent proper tissue analysis.

Other important considerations:

• Avoid traumatizing the nevus
• Protect the skin from excessive sun exposure

Treatment is always individualized by the doctor.

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Q&A

Is papillomatous nevus dangerous?

In most cases, it is a safe benign lesion with a low risk of malignancy.

Does it need removal?

Not always. Removal is recommended for changes, trauma, or diagnostic uncertainty.

How is it treated?

If necessary, it is surgically removed with subsequent tissue analysis.

Can it turn into cancer?

The risk is very low, especially if there are no changes. Any suspicious signs should be evaluated by a doctor.

Can it be traumatized?

Yes, particularly if it protrudes above the skin. Avoid repeated irritation.

Why do nevi increase with age?

Due to genetics, hormonal changes, and external factors such as sun exposure.

Can you sunbathe with nevi?

Sun exposure should be limited, and protective measures used.

Should stable nevi be monitored?

Yes, regular monitoring helps detect changes early.

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Medical Sources

• Fitzpatrick’s Dermatology
• WHO Classification of Skin Tumours
• American Academy of Dermatology (AAD)
• DermNet NZ
• UpToDate