Male Breast Cancer: What Tyler Mane’s Diagnosis Tells Us
Tyler Mane found a lump. His doctors, he says, dismissed it. It was his wife who kept pushing until it was taken out — and that is how he found out, at 59, that he had breast cancer.
He's six foot nine. He played Sabretooth in X-Men. He wrestled professionally for years. And when he told his followers in June 2026, one of the first things he said about it was this:
"I'll be honest, my first reaction was to keep it secret. I mean, it's kind of embarrassing."
Tyler Mane, Instagram, June 2026
That sentence is most of the problem with breast cancer in men.
Maybe you're reading this because the man is yours. Your husband found something behind his nipple and keeps saying it's nothing. Your dad has a family history nobody has joined up. Your brother might carry the same BRCA2 variant you do — and doesn't know, because the testing stopped with you. Mane's wife is the reason he was diagnosed early. So this is written to you.
Watch the video
Male Breast Cancer: What Tyler Mane's Diagnosis Tells Us
This post is the written version of my video. If you'd rather listen, it's all there, chapter by chapter.
Watch on YouTube →Men have breast tissue
Every man has a small amount of breast tissue sitting behind the nipple. A few ducts, some fat, not much else. It's the same tissue women have, in a much smaller amount, and it can develop the same cancers.
Here are the numbers. In New Zealand, around 26 men are diagnosed with breast cancer each year (Breast Cancer Foundation NZ). In the United States, the American Cancer Society estimates about 2,670 men will be diagnosed in 2026, and about 530 will die of it. A man's average lifetime risk is about 1 in 755 (American Cancer Society) — Mane quoted 1 in 750, which is the same figure rounded. Men make up fewer than 1 in 100 of all breast cancers.
What these numbers don't tell you: that 1 in 755 is an average across every man. For a man who carries a BRCA2 variant, it's a very different number. So — uncommon, yes. "Super rare", which is how Mane described it? Not quite.
Why it's so often found late
Men with breast cancer tend to be diagnosed at a later stage than women. There isn't one reason. They stack.
There's no screening programme for men. BreastScreen Aotearoa invites women, and no country I'm aware of screens men routinely. Men don't check. Men don't expect it. When they do feel something, they wait. When they finally mention it, the first explanation offered is usually gynaecomastia — a benign enlargement of male breast tissue — because most of the time, that is what it is.
And then there's the embarrassment Mane named. A disease the whole culture has wrapped up as a women's disease. A man sitting in a breast clinic waiting room, with the leaflets and the posters, feeling like he's in the wrong building.
I don't know the details of Mane's case and I'm not going to guess at them. What I can say is that a lump behind a man's nipple is usually benign, and the one that isn't can look, at first, a lot like the ones that are. That's exactly why it gets a scan.
Who is at higher risk
The biggest single known risk factor is a BRCA2 variant — what we used to call a BRCA2 mutation.
A man carrying BRCA2 has a lifetime breast cancer risk of around 6.8% by age 70, against roughly 0.1% for men in general. For BRCA1 it's lower, about 1.2% (Tai et al., Journal of the National Cancer Institute, 2007).
And the limit on that: those estimates come from families who were studied precisely because they had a lot of cancer, so they may run a little high for any one man. It also means that around 93 in every 100 men with BRCA2 will never get breast cancer. That matters. It's a reason for him to know.
Here's the part that's about you. If you've tested positive for BRCA2, each of your brothers and each of your sons has a 50% chance of carrying it too. In practice, the testing conversation in a family tends to travel along the women. The men get missed. And a man who knows he carries BRCA2 has a reason to take a lump seriously, and a reason to ask about prostate cancer checks, which BRCA2 also affects.
It is entirely appropriate to ask your genetics team how to let the men in your family know.
The other risk factors, briefly:
- Age. Most men are diagnosed between 60 and 70. Mane, at 59, is a year under that range.
- Family history of breast or ovarian cancer, even without a known gene.
- Klinefelter syndrome — an extra X chromosome. The risk is many times higher, though the published estimates vary a lot.
- Anything that tips the balance towards oestrogen — carrying a lot of extra weight, liver cirrhosis, some hormone treatments.
- Previous radiotherapy to the chest.
What it looks and feels like
Most often, it's a painless, firm lump directly behind the nipple or close to it, on one side.
Because there's so little tissue, a cancer in a man sits close to the skin and close to the nipple, so it can change them early. Look for a nipple that has pulled in when it never used to. Discharge from the nipple, especially if it's bloody. Skin around the nipple that has puckered, reddened, or broken down. Or a lump in the armpit on the same side.
Gynaecomastia usually feels different — softer, rubbery, a disc centred under the nipple, often tender, sometimes on both sides. A cancer is more often hard, painless, on one side, and sometimes a little off-centre. But there's overlap, and nobody can tell them apart for certain with their fingers. Including me.
Most lumps behind a man's nipple are gynaecomastia. Most. That is exactly why checking one is quick. It is not a medical emergency. It is a GP appointment in the next week or two, and it should end in a scan — a mammogram and an ultrasound — rather than an examination alone.
If he's the one making the call, the words are simple:
"I've found a lump behind my nipple, on one side, and I'd like it checked for breast cancer. Can I be referred for a mammogram and ultrasound?"
And if he's reassured without a scan and the lump is still there a few weeks later, he goes back. Second opinions are normal and appropriate.
How it's diagnosed
The same way we do it for women. An examination first — the lump, the skin, the nipple, the armpit. Then imaging. A mammogram works well in men, because there's so little dense tissue to see through, and an ultrasound looks at the lump and at the lymph glands in the armpit.
If anything looks suspicious, the next step is a core biopsy: a needle under local anaesthetic, a few small samples, a few minutes. The pathology report tells us the type of cancer, the grade, and the receptors — whether it's oestrogen receptor positive, progesterone receptor positive, HER2 positive. Those receptors decide most of the treatment.
Every man diagnosed with breast cancer should be offered genetic testing — that is the American Society of Clinical Oncology's recommendation (ASCO guideline, 2020). The result matters for him, and it matters for his children and his sisters.
In New Zealand
Genetic testing goes through Genetic Health Service NZ, usually on referral from his specialist. If it hasn't been mentioned, ask.
How it's treated
Mostly the way we treat women — with a few differences that matter.
Surgery. A mastectomy is more common in men than in women, because there's so little tissue and the cancer usually sits right under the nipple. Keeping the breast is sometimes possible, but less often. The first lymph gland or two in the armpit — the sentinel nodes — are checked at the same operation.
Radiotherapy, chemotherapy, targeted treatment. Radiotherapy depends on the size of the cancer, the lymph glands and the margins. Chemotherapy is for cancers where the risk of it coming back is high enough to justify it. Mane started chemotherapy straight away, which tells you his team thought the benefit was worth it for him — I don't know his pathology, so that's as far as I'd take it. HER2-targeted drugs are added when the cancer is HER2 positive.
Hormone treatment. This is where men differ most. Around 90% of breast cancers in men are oestrogen receptor positive — a higher share than in women — so nearly every man will be offered a hormone tablet. In men, the first choice is tamoxifen (ASCO guideline, 2020).
Here's why. In postmenopausal women we often use an aromatase inhibitor — anastrozole, letrozole — which lowers oestrogen by stopping the body converting testosterone into it. In a man, the brain notices the oestrogen drop and tells the testes to make more testosterone. More raw material, and some of it still gets converted. It's like turning a tap down while somebody else turns the water pressure up. Tamoxifen avoids that, because it blocks the oestrogen receptor on the cancer cell itself — it takes the lock, rather than rationing the key.
If a man can't take tamoxifen, an aromatase inhibitor can still be used, but alongside an injection that switches off hormone production in the testes — the same kind of drug we use to switch off the ovaries in younger women, such as goserelin (Zoladex).
The limit on all of that: trials in men are small, because there aren't many men with breast cancer to put in them. A lot of what we do for men is borrowed from what we know in women, plus smaller studies in men. The American guideline on men was built from 26 observational studies and no randomised trials at all. The tamoxifen advice is well supported — though not by the huge trials behind women's treatment.
And tamoxifen has side effects in men too — hot flushes, lower libido, erection problems, weight gain, low mood. Men often don't mention them, for the same reason Mane nearly didn't mention the cancer. They're treatable, and it is entirely appropriate to ask.
What the survival numbers do and don't tell you
If you look up survival figures for men with breast cancer, they look worse than they do for women. That's the number that frightens people.
What that number doesn't tell you: when men and women are compared stage for stage, most of the gap closes. Not all of it, in every study — men are also older on average when they're diagnosed, and have more other health problems, which muddies any comparison. But the biggest lever is how early it's found. That is the one thing we can actually move.
So what does Tyler Mane's diagnosis tell us?
It tells us men get breast cancer. It tells us that embarrassment costs time. It tells us that a lump behind a man's nipple deserves a scan. And it tells us that the person who makes the difference is very often the one standing next to him.
If that's you:
- If he's found a lump — a GP appointment in the next week or two, and ask for a mammogram and ultrasound.
- If you carry BRCA2 — ask your genetics team about testing for your brothers and sons.
- If he's already been diagnosed — ask about genetic testing, ask why tamoxifen or why not, and ask about side effects before they wear him down.
Mane went public anyway, embarrassment and all. That was his decision to make, and so is every one that comes after it.
You have time. Ask the question. Then make the decision yourself.
The video
Male Breast Cancer: What Tyler Mane's Diagnosis Tells Us
Seven short chapters — risk, signs, diagnosis, treatment and outcomes — if you'd rather watch than read, or want to send it to him.
Watch on YouTube →Sources
- Tyler Mane's announcement and quotes: ABC7, June 2026; FOX6, June 2026.
- New Zealand figures: Breast Cancer Foundation NZ, Breast cancer in men.
- United States figures and lifetime risk: American Cancer Society, Key statistics for breast cancer in men.
- BRCA1 and BRCA2 risk in men: Tai YC et al. Breast cancer risk among male BRCA1 and BRCA2 mutation carriers. J Natl Cancer Inst 2007;99:1811–4.
- Treatment and genetic testing: Hassett MJ et al. Management of male breast cancer: ASCO guideline. J Clin Oncol 2020;38:1849–63.
This article is general information, not personal medical advice. If you or someone close to you has a new breast or chest change, please see a doctor.