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Penile Cancer Symptoms: Early Signs, Warning Signs, and When to Get Checked
Penile cancer is rare, and most changes on the penis are not cancer. Still, it helps to know what to look for. Almost all penile cancers begin as a change you can see or feel on the skin, which means they can often be found early. This guide walks through the common penile cancer symptoms, the ones that show up less often, and the symptoms that can appear if the cancer has spread. Nothing here is a diagnosis. Use it to decide whether it is time to make an appointment, and bring your questions to your own doctor.
What Are the Signs and Symptoms of Penile Cancer?
Most penile cancers start in the skin. The change usually shows up on the glans (the head of the penis) or on the foreskin, and less often on the shaft. In the beginning, it is often small. It may be a patch of skin that has changed color, an area that feels thicker than the skin around it, a small sore, or a rash. Early penile cancer is usually painless, and it does not usually cause trouble with erections or with passing urine at first. Because of this, the first sign of penile cancer looks and feels a lot like a harmless skin problem.
That is exactly why these changes get overlooked. A red patch under the foreskin can look like a yeast infection or like balanitis (swelling and soreness of the head of the penis). A small sore can look like a friction injury or a sexually transmitted infection. Many men reasonably assume it will clear up on its own, and many try a cream or an ointment from the drugstore first. Doctors can be fooled too. Researchers report that about 25% of penile cancers are first labeled as something harmless before the right diagnosis is made.
Waiting is the real problem. In a widely used medical reference, up to 50% of men with penile cancer had waited as long as a year before getting the lesion looked at. The reasons given are almost always the same: embarrassment, guilt, fear, and hoping it would go away. Delay is the single biggest reason penile cancer is found late rather than early, and that matters. When the diagnosis is delayed, survival is lower, treatment is harder, and there is less chance of keeping the penis working and looking the way it did before.
A simple rule of thumb helps: any new growth, sore, rash, or color change on the penis that has not cleared up after a few weeks, or that is getting worse, should be looked at. That is true even when it does not hurt, and it is especially true if a cream, an antibiotic, or an antifungal has already been tried and it did not work. If the cause is not obvious, ask to be referred to a urologist (a doctor who specializes in the urinary tract and male reproductive organs) or a dermatologist (a skin specialist).
The good news is worth repeating. Penile cancer is highly curable when it is found early, and most penile lumps, sores, and rashes turn out to be something else entirely. Getting checked usually ends in reassurance. If you want to know what happens at that appointment, see our guide on how penile cancer is diagnosed, and talk with your own care team about what your symptoms mean for you.
What Are the Most Common Symptoms of Penile Cancer?
The most common symptoms of penile cancer are skin changes. They usually appear on the glans or on the inside of the foreskin, which are the areas that are hardest to see. If you are not circumcised, gently pulling the foreskin back and looking at the whole head of the penis is the only way to spot many of these changes.
A change in skin color or thickness: An area of skin on the glans, foreskin, or shaft may look darker, lighter, or redder than the skin around it, or it may start to feel thick and leathery. This is the most common first sign.
A sore or ulcer that does not heal: An ulcer is an open sore. It may bleed a little, and it may crust over and then open again. A sore that is still there after several weeks needs to be checked.
A lump or growth: This can be a firm nodule under the skin, a wart-like bump, or a growth that sticks out from the skin. Some grow slowly over months.
A reddish, velvety rash: A flat red patch under the foreskin with a soft, velvety look is a classic finding. Doctors sometimes call this erythroplasia of Queyrat, and it can be a precancer.
Flat, bluish-brown growths: These look like flat, dark, slightly raised spots on the skin of the penis.
Small, crusty bumps: Rough, scaly, or crusted bumps that do not smooth out with moisturizer or time.
A bad-smelling discharge under the foreskin: Discharge is fluid. A strong or foul odor along with fluid trapped under the foreskin can be a sign of penile cancer, although infection causes this far more often.
Bleeding: Bleeding from the penis or from under the foreskin that is not explained by an injury.
Swelling at the tip of the penis: Swelling of the glans, especially when the foreskin feels tight around it.
Phimosis that is new: Phimosis means the foreskin cannot be pulled back over the glans. Phimosis that a man has had all his life is common and usually harmless, but a foreskin that suddenly becomes tight and hard to pull back in adulthood should be examined.
Sores and lumps caused by penile cancer usually do not hurt. The absence of pain is not a reason to wait. Any new growth or abnormal area deserves a look even when you feel fine.
Where the change shows up matters less than how long it lasts. Penile cancers tend to spread sideways along the surface of the skin first and can cover much of the glans or foreskin before they grow deeper. That slow, flat growth is part of why the early stage is so easy to mistake for a rash.
You may also feel a lump in the groin. If penile cancer spreads, it usually travels first to the lymph nodes (small glands that help fight infection) in the groin. Normal lymph nodes are about the size of a bean and are hard to feel. Swollen ones can feel like marbles or lumps under the skin of the groin crease. Groin lumps have many causes, and infection is a much more common one than cancer.
Any single item on this list is far more likely to be caused by something benign than by cancer. What should prompt a call is a change that lasts, worsens, or comes back after treatment. Bring it to your doctor rather than trying to sort out which item on the list you have.
What Are the Less Common Symptoms of Penile Cancer?
Pain is the symptom most people expect, and it is often the one that is missing. Early penile cancer is typically painless. Some men do feel soreness or tenderness, and pain becomes more likely as a tumor grows larger or grows deeper into the tissue of the penis, but pain is not a requirement, and its absence is not reassurance.
Itching and burning show up in some men, usually because of the skin conditions that can come before penile cancer. Lichen sclerosus, a condition that causes white patches on the glans and foreskin, is often silent but can cause burning and itching. Bowenoid papulosis, a change linked to HPV (human papillomavirus, a common virus spread by sexual contact), can also itch. Because these conditions can turn into cancer over time in a small number of men, itching or burning that keeps coming back is worth mentioning at a visit.
Changes in the urine stream are less common early on, because most penile cancers stay in the skin at first. If a tumor grows near or into the urethra (the tube that carries urine out of the body), the stream may become weak, sprayed, or split, or it may become hard to start. Urinary changes have many other causes, including prostate problems and infections, so this symptom on its own does not point to penile cancer.
Painful erections are another symptom that can appear. This is described most often with lichen sclerosus, where the skin becomes tight and less stretchy. It can also happen when a tumor involves the erectile tissue inside the penis. Either way, painful erections that are new for you should be evaluated.
The most important, less common pattern is not a symptom at all. It is a symptom that behaves strangely. Penile cancer very often looks like an infection, so it very often gets treated like one. When a rash, a red patch, or a sore does not clear after a course of antibiotics or an antifungal cream, that failure to respond is itself a warning sign. Standard urology guidance is that any penile lesion, ulcer, nodule, or rash that does not improve with normal treatment should be biopsied (a small sample of tissue is removed and looked at under a microscope).
If you have been through two or three rounds of creams or pills with no lasting improvement, it is reasonable to ask directly for a referral and for a biopsy. Asking for that is not overreacting.
What Are the Symptoms of Advanced (Metastatic) Penile Cancer?
Metastatic means the cancer has spread beyond where it started. Penile cancer spreads in a fairly predictable order. It travels through the lymph system to the nodes in the groin first, then to deeper nodes in the pelvis, and only later to distant organs. So the symptoms of advanced disease usually start in the groin.
Swollen or hard groin lymph nodes are the main finding. At the time of diagnosis, somewhere between 30% and 60% of men have enlarged nodes that a doctor can feel in the groin, but only about half of those enlarged nodes actually contain cancer. Nodes swell in response to infection all the time, including infection of the penile lesion itself, so a lump in the groin is not proof that cancer has spread. Your doctor will pay attention to how many nodes are enlarged, how big they are, and whether they move freely or feel fixed in place.
As groin nodes grow, other changes can follow. Large nodes can become firm and stop moving under the fingers. In advanced cases, the skin over them can stretch, thin, and break down into an open, draining area. That needs medical attention promptly, both for comfort and to prevent infection and bleeding.
Swelling of one or both legs can happen when lymph nodes in the groin or pelvis are blocked. Lymph fluid backs up and collects in the leg, causing heaviness, tightness, and swelling. This is called lymphedema. It can be caused by cancer in the nodes, and it can also be a side effect of surgery that removes the nodes. Lymphedema can be managed, and specialized therapists treat it, so raise it with your team rather than living with it.
More general symptoms can appear as well, such as losing weight without trying or feeling deeply tired in a way that rest does not fix. These are common with many advanced cancers and have many other explanations too, so they are a reason to be evaluated rather than a reason to assume the worst.
Distant spread is uncommon and usually happens late. Only about 1% to 10% of men have distant metastases when they are first diagnosed, and it almost always occurs together with cancer in the groin nodes. When it does happen, the usual sites are the bones, the liver, the lungs, and rarely the brain. Bone spread can cause a deep, persistent ache in one area, and doctors often order a bone scan when a man reports bone pain. Lung involvement can cause a cough that does not go away or shortness of breath. Liver involvement can cause pain or fullness in the upper right side of the belly, poor appetite, or yellowing of the skin and eyes. Even at this stage, there are treatment options and clinical trials, and our guides on penile cancer stages and penile cancer treatment explain what comes next.
Whatever your results show, the next step is a conversation with your own care team about what the findings mean for you and what you want to do next.
What’s Next: Click the Penile Cancer Guide page to see all the guides about Penile cancer.