The short answer
Penile cancer is a rare cancer that starts in tissues of the penis. Changes in skin, sores, discharge, bleeding, or a lump can lead to evaluation.
Penile Cancer: A Plain-Language Overview is a planning topic, not a diagnosis or treatment instruction by itself.
The next step depends on diagnosis, symptoms, goals, prior results, and what is still pending.
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The full explanation.
How rare is rare
The American Cancer Society projects 2,260 new cases in the United States in 2026, and 450 deaths. Those annual forecasts come from Cancer Facts & Figures, and NCI's PDQ summary reprints the earlier 2025 edition of them. NCI puts the rate in rich countries at fewer than 1 case per 100,000 men a year.
That rarity has a cost. Most urologists see very few of these cancers. Much of the evidence comes from small case series, not large trials. So it is worth having a high-volume center review the plan. The surgery can still happen close to home.
What sends men in
NCI states that "signs of penile cancer include sores, discharge, and bleeding." It says to check with a doctor about "redness, irritation, or a sore on the penis" or "a lump on the penis." NCI adds that "these and other signs may be caused by penile cancer or by other conditions."
The pattern that matters is persistence. A sore that has not healed in weeks needs a biopsy. So does a patch that keeps coming back after creams. So does bleeding under the foreskin. The usual mistake is one more round of treatment for assumed infection. Delay is the main enemy here, and shame is what causes it.
What the pathology report will say
Nearly all penile cancers start in squamous cells. Those are the flat cells that make up skin. The report will usually name a subtype. NCI lists verrucous carcinoma, warty carcinoma, and basaloid carcinoma. Neuroendocrine carcinomas happen but are much less common.
Subtype hints at cause. NCI writes that "warty carcinoma and basaloid carcinoma appear to be more highly associated with human papillomaviruses (HPV), particularly HPV 16, than typical squamous cell carcinoma or verrucous carcinoma of the penis."
The Centers for Disease Control and Prevention (CDC) puts numbers on the HPV share. CDC counts an average of 1,429 penile cancers a year. It estimates that about 900 of them are caused by HPV. That is 63%. The 2,260 figure is a one-year forecast. The two counts use different methods, so they will not match.
NCI also cites data on circumcision. Studies link newborn male circumcision to lower risk. The odds ratio is 0.37. The number needed to treat is about 909. That last figure is the honest part. The disease is so rare that hundreds of procedures match one cancer prevented.
Stage, in the shape it is written
NCI groups stage this way.
- Stage 0. Carcinoma in situ (Tis) or noninvasive disease (Ta), N0, M0.
- Stage I. T1a, N0, M0.
- Stage II. T1b through T3, N0, M0.
- Stage III. T1 through T3 with N1 or N2 nodes, M0.
- Stage IV. T4 with any N. Or any T with N3. Or any T with M1.
NCI states the outlook plainly. "When diagnosed early (stage 0, stage I, and stage II), penile cancer is highly curable. Curability decreases sharply for stage III and stage IV disease."
The groin nodes are the whole ballgame
Penile cancer drains first to the inguinal nodes, meaning the lymph nodes in the groin. Whether cancer has reached them drives both stage and survival. It is also hard to answer.
The trap is that swollen groin nodes are often just infected. NCI notes that groin swelling is common at diagnosis. It may reflect infection, not cancer. So the stated approach is to remove the primary tumor first, give antibiotics, and wait. If nodes stay enlarged, NCI states that "bilateral inguinal lymph node dissection should be performed." That surgery comes three or more weeks after the primary tumor is removed.
The gentler option is dynamic sentinel node biopsy. It maps and removes only the first node the tumor drains into. NCI cites one study with an 11% false-negative rate. Those were men with T2 to T3 tumors and normal-feeling nodes. So about one map in nine missed disease that was there.
That number explains the tension. NCI describes the cost of full node dissection directly: "infection, skin necrosis, wound breakdown, chronic edema, and even a low, but finite, mortality rate." Chronic edema means lasting leg swelling. The choice is a firm answer with real harm, or a softer test that sometimes misses.
Treatment, stage by stage
Stage 0. NCI lists Mohs micrographic surgery. It lists topical fluorouracil cream. It lists imiquimod 5% cream, which NCI calls "a topical immune response modifier that has been effective." It also lists laser therapy with Nd:YAG or carbon dioxide lasers, and cryosurgery.
Stage I. Options include wide local excision with circumcision. Also penile amputation. Also external-beam radiation. Also brachytherapy, which places radiation right against the tumor. Also Nd:YAG laser.
Stage II. NCI lists partial, total, or radical penile amputation. It lists external-beam radiation with brachytherapy. Nd:YAG laser is an option for some small lesions.
Stage III. Bilateral ilioinguinal lymph node dissection is central. Radiation is an option when surgery is not. Radiation after surgery is used to cut the risk of return in the groin. On drugs, NCI notes that a "combination of vincristine, bleomycin, and methotrexate has been effective as both neoadjuvant and adjuvant therapy." NCI also lists cisplatin with continuous-infusion fluorouracil.
Stage IV. NCI lists surgery and radiation for symptom relief. For drugs it lists vincristine, cisplatin, methotrexate, and bleomycin.
One test to request before fluorouracil
Fluorouracil and capecitabine belong to a drug family called fluoropyrimidines. NCI advises genetic testing of the DPYD gene before they are given. About 1% to 2% of people carry a harmful variant. They break the drug down too slowly. That can cause severe, sometimes fatal, side effects. Ask whether this test was ordered, and whether the result is back.
Questions worth asking
Which squamous subtype is on my report? Was HPV testing done? What is my T stage? Does the tumor invade the erectile bodies? Are my groin nodes involved, and is that infection or cancer? Am I a candidate for sentinel node biopsy instead of full dissection? What false-negative rate do you use? Can any organ-sparing option work here, such as glans surgery, laser, or brachytherapy? Has DPYD testing been ordered? Has a high-volume center reviewed this?
Related pages
See also Cancer Staging, Pathology Reports, and Getting a Second Opinion.
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Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Sources last checked: 2026-08-16 what this meansLast updated: 2026-08-19Next planned review: 2027-07-21
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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Related articles
- Testicular Cancer: A Plain-Language Guide
- Understanding Your Pathology Report
- Cancer Staging: What the Stage Means
- Getting a Second Opinion After a Diagnosis
- Questions to Ask About Penile Cancer Treatment
- Penile Cancer Recurrence: What to Ask
- Metastatic Penile Cancer: What to Ask
- Penile Cancer Survivorship Follow-Up Questions
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