Penile Cancer Warning Signs — HPV and Prevention

Penile cancer is uncommon in the US — about 2,000 cases per year — but it's much more common in some other countries and is mostly preventable. About 60% of cases are caused by HPV. Early detection makes a major difference in treatment outcomes.

Here's what to watch for and what reduces risk.

The short answer

  • Incidence: ~2,000 cases/year in US; much higher in countries without circumcision
  • Cause: HPV (~60% of cases), other factors (smoking, lichen sclerosus, chronic inflammation, lack of circumcision)
  • Most common type: Squamous cell carcinoma
  • Warning signs: Persistent lesion, lump, color change, sore that doesn't heal
  • Early detection: Excellent outcomes
  • Late detection: Worse prognosis, may require amputation

What to watch for

Concerning lesions on penis

  • Lump or thickening on glans or foreskin
  • Persistent sore that doesn't heal in 4-6 weeks
  • Color change (red, white, brown patches)
  • Bleeding from a lesion
  • Crusting or scab that doesn't go away
  • Foul odor from under foreskin
  • Discharge from a lesion
  • Wart-like growth that's growing
  • Painful lesion (less common; cancer is often painless initially)

Symptoms

  • Often painless
  • Sometimes itching or burning
  • Phimosis (tight foreskin) developing
  • Difficulty retracting foreskin

Where it occurs

  • Glans (head) — most common
  • Foreskin — common
  • Shaft — less common
  • Sometimes around urinary opening

How to examine yourself

Frequency

  • Monthly self-examination is reasonable for high-risk individuals
  • After hot shower (relaxed tissue)
  • Good lighting

What to look for

  • Retract foreskin if uncircumcised
  • Examine entire surface of glans
  • Check shaft front and back
  • Feel for any lumps
  • Note any color changes
  • Compare to your normal baseline

When something seems abnormal

  • Track for 2-4 weeks
  • If it persists or grows, see a doctor
  • Don't ignore "minor" lesions that don't heal

Risk factors

HPV

  • HPV-16 most common (about 30-40% of penile cancers)
  • HPV-18 also significant
  • HPV-related cancers usually develop in glans and foreskin
  • Often related to oral or genital warts history

Circumcision

  • Reduces risk significantly — studies show 3-5x lower rates in circumcised men
  • Probably related to chronic moisture under foreskin + easier hygiene
  • Adult circumcision reduces risk less dramatically than neonatal

Smoking

  • Significant risk factor
  • Particularly synergistic with HPV
  • Smokers have 2-3x higher penile cancer risk

Phimosis (tight foreskin)

  • Major risk factor
  • Chronic inflammation
  • Difficulty cleaning
  • May need circumcision or treatment

Chronic inflammation

  • Lichen sclerosus of penis (significant risk factor)
  • Recurrent balanitis (penis tip inflammation)
  • Long-term skin diseases

Other factors

  • Age (more common over 50)
  • Immune compromise (HIV+, transplant patients)
  • Poor hygiene history
  • Personal history of penile lichen sclerosus or other dermatologic conditions

Geographic

  • US/Europe: ~0.5-1.5 cases per 100,000
  • Some African countries: 5-10 per 100,000
  • Religion + circumcision practices major factors

Precancerous conditions

Penile intraepithelial neoplasia (PeIN)

  • Precancerous changes to skin cells
  • Can progress to invasive cancer
  • Treatable before becoming cancer

Bowen's disease (squamous cell carcinoma in situ)

  • Skin cancer precursor
  • Treatable

Lichen sclerosus (LS) of penis

Buschke-Löwenstein tumor

  • Giant condyloma — large HPV-related lesion
  • Considered a verrucous carcinoma
  • Treatment includes surgery

Diagnosis

Visual examination

  • Trained provider
  • Documentation of lesion

Biopsy

  • Definitive diagnosis
  • Local anesthesia
  • Tissue sample sent to pathology

Imaging

  • For staging (extent of disease)
  • MRI, CT, ultrasound

Lymph node assessment

  • Sentinel node biopsy
  • Or formal dissection
  • Important for staging

Treatment

Early stage (Tis, T1)

  • Topical chemotherapy (5-fluorouracil cream)
  • Topical immunotherapy (imiquimod)
  • Cryotherapy
  • Laser ablation
  • Mohs surgery
  • Wide local excision (preserves most penis)

Intermediate stage

  • Partial penectomy (removal of part of penis)
  • Often combined with lymph node treatment
  • Reconstruction sometimes possible

Advanced stage

  • Total penectomy (full removal)
  • Lymph node dissection
  • Chemotherapy
  • Radiation
  • Multimodal care

Prognosis

  • Localized: 80-95% 5-year survival
  • Regional spread: 50-60%
  • Distant metastasis: 10-20%
  • Early detection critical

Prevention

Primary prevention

  • HPV vaccination — Gardasil 9 if eligible (under 26; up to 45)
  • Circumcision — neonatal most protective; adult circumcision reduces risk
  • Smoking cessation
  • Treat chronic conditions like lichen sclerosus
  • Limit sexual partners when feasible
  • Use condoms during high-risk sexual contact

Secondary prevention (early detection)

  • Self-examination monthly
  • Annual physical that includes genital exam
  • See doctor promptly for any persistent lesion
  • Especially important for high-risk individuals

For high-risk patients

  • Annual specialist examination
  • Aggressive treatment of precancers
  • Counseling about warning signs

Special situations

HIV+ patients

  • Higher penile cancer risk
  • More aggressive surveillance
  • Lower threshold for biopsy

Uncircumcised men

  • Daily foreskin retraction + cleaning
  • Watch for phimosis development
  • Adult circumcision possible if needed

Lichen sclerosus patients

  • Topical clobetasol treatment
  • Regular monitoring
  • Lower threshold for biopsy of changing lesions

After previous penile cancer

  • Annual surveillance
  • Sexual function support
  • Mental health consideration

What to ask your doctor

"Should I be examined for penile lesions during my annual physical?"

"I have lichen sclerosus — what's my cancer risk and surveillance schedule?"

"Should I be vaccinated against HPV?"

"How do I do effective self-examination?"

"What's the workup for a new lesion?"

Common misconceptions

"Penile cancer is only for old men with poor hygiene." It can affect men of any age and any hygiene level. HPV-related cases are increasing in younger men.

"If it doesn't hurt, it's not cancer." Penile cancer is often painless initially.

"I'm circumcised, so I don't need to worry." Circumcision reduces risk significantly but doesn't eliminate it. Continue self-examination.

"Lichen sclerosus is just a skin condition." It significantly increases cancer risk. Treat it.

"A wart-like thing is just a wart." Verrucous carcinoma can look like a large wart. Persistent or growing lesions need biopsy.

"HPV vaccine is for kids and women." Men benefit from HPV vaccination too — for penile, anal, throat cancers.

When to see a doctor urgently

  • Persistent lesion > 4-6 weeks
  • Lesion that bleeds
  • Lump that grows
  • Color change that spreads
  • New lump under skin
  • Persistent foul odor under foreskin
  • Difficulty retracting foreskin (in uncircumcised)

Don't wait. Early intervention preserves anatomy and function.

Quality of life after diagnosis

After early treatment (topical or limited excision)

  • Usually maintain full sexual function
  • Small scars
  • Continued surveillance
  • Good outcomes

After partial penectomy

  • Some loss of length but often most function retained
  • Reconstruction options
  • Sexual function support
  • Mental health attention

After total penectomy

  • Major life change
  • Reconstruction may be possible
  • Specialized counseling
  • Support groups for survivors

Bottom line

Penile cancer is:

  • Rare in the US but underrecognized
  • Mostly preventable through vaccination, circumcision (for some), smoking cessation
  • Highly treatable when caught early — preserved function, excellent survival
  • Late-stage devastating — anatomy and function loss
  • Important to watch for in all men, especially those with risk factors

If you notice anything unusual on your penis that doesn't go away in 4-6 weeks — see a doctor. The conversation may feel awkward, but the consequences of delay aren't.

For high-risk men (lichen sclerosus, HIV+, smokers, uncircumcised with chronic inflammation), monthly self-examination + annual specialist visits prevent most bad outcomes.

For more on HPV, see HPV in men, HPV vaccine for adults over 26, HPV throat cancer, anal cancer screening for MSM, and our HPV pillar guide.