Insights ·
Breast Cancer in Men: The Overlooked Side of Breast Health
Male breast cancer, gynaecomastia, and how to tell them apart — the warning signs worth acting on, what raises risk, and why most male breast enlargement is benign but still deserves assessment.
October is Breast Cancer Awareness Month, a time when conversations about breast health, screening and early detection become particularly prominent.
Most of these conversations understandably focus on women, who account for the overwhelming majority of breast cancer diagnoses. However, there is an important group that is often overlooked.
Men can develop breast cancer too.
Although male breast cancer is rare, accounting for approximately 1% of all breast cancer diagnoses, its relative rarity can contribute to a lack of awareness. Many men do not realise that they have breast tissue capable of developing cancer, while others may dismiss a new lump or change in their chest because they associate breast cancer exclusively with women.
At the same time, not every enlargement of the male breast is a cause for alarm. One of the most common benign conditions affecting the male chest is gynaecomastia, an enlargement of glandular breast tissue that can develop during adolescence or adulthood.
Understanding the difference between these conditions is important, both for recognising changes that require medical attention and for avoiding unnecessary anxiety.
As we conclude Breast Cancer Awareness Month, we would like to turn the conversation towards an often-neglected aspect of breast health: the male breast.
Do Men Really Have Breast Tissue?
Yes. Although male and female breasts develop differently, both begin with similar basic structures.
Men possess a small amount of breast tissue beneath the nipple and areola, including breast ducts and supporting connective tissue.
During puberty, hormonal changes typically stimulate significant breast development in females. In males, the predominance of testosterone generally limits this development, leaving a relatively small amount of breast tissue.
However, this tissue remains present throughout life.
Just as breast cells in women can undergo abnormal changes and become cancerous, cells within the male breast can also develop malignancy.
Most male breast cancers arise from the breast ducts and are classified as invasive ductal carcinomas.
Because men generally have less breast tissue, a developing lump may be relatively close to the nipple or surrounding skin.
This makes awareness of new changes particularly important.
How Common Is Breast Cancer in Men?
Male breast cancer is uncommon, representing approximately 1% of breast cancer cases.
It is diagnosed most frequently in older men, although it can occur at younger ages.
One of the challenges surrounding male breast cancer is that men may be less likely to recognise the early warning signs.
Unlike women, who are more frequently exposed to breast health education and screening discussions, many men have never been encouraged to examine or pay attention to changes in their chest.
As a result, symptoms may be overlooked or attributed to other causes.
While male breast cancer remains rare, recognising suspicious changes and seeking assessment early can make an important difference.
What Are the Warning Signs of Male Breast Cancer?
The most common presentation of male breast cancer is a new, usually painless lump in the breast, often located near or beneath the nipple.
However, breast cancer can present in several different ways.
Symptoms that should prompt medical assessment include:
- A new lump or thickening in the breast or chest
- A hard, irregular or fixed mass
- New nipple inversion or changes in nipple position
- Bloody or unexplained nipple discharge
- Skin dimpling, puckering or ulceration
- Persistent redness or changes around the nipple
- A lump or swelling in the armpit
Importantly, breast cancer does not always cause pain.
A painless lump should therefore not be assumed to be harmless.
Equally, these symptoms do not automatically indicate cancer. Many breast changes are caused by benign conditions.
The important message is not to diagnose yourself, but to seek medical assessment when something changes.
What Increases the Risk of Male Breast Cancer?
Although breast cancer can develop in men without any identifiable risk factors, certain characteristics and medical conditions are associated with an increased risk.
Age
The likelihood of developing male breast cancer increases with age, with most cases diagnosed in later adulthood.
Family history and genetics
Men with a strong family history of breast cancer may have an increased risk, particularly when close relatives have been diagnosed with breast or ovarian cancer.
Inherited mutations in genes such as BRCA2, and to a lesser extent BRCA1, are associated with increased male breast cancer risk.
Men who carry certain inherited genetic mutations may benefit from genetic counselling and individualised surveillance recommendations.
Hormonal factors
Conditions that increase oestrogen exposure or alter the balance between oestrogen and testosterone may influence breast cancer risk.
These include certain hormonal disorders and Klinefelter syndrome.
Obesity
Excess body fat can influence hormone metabolism and is associated with an increased risk of male breast cancer.
Previous radiation exposure
Men who have previously received radiation therapy involving the chest may have an increased risk of developing breast cancer later in life.
It is important to remember that having a risk factor does not mean that breast cancer will necessarily develop, just as the absence of known risk factors does not completely eliminate the possibility.
How Is Male Breast Cancer Diagnosed?
When a man presents with a suspicious breast lump or another concerning change, the first step is a thorough clinical assessment.
This includes reviewing the patient’s symptoms, medical history, family history and medications, followed by an examination of the breast and surrounding lymph nodes.
Depending on the findings, further investigations may include mammography, breast ultrasound or both.
If imaging or clinical examination identifies a suspicious lesion, a biopsy may be required to establish the diagnosis.
A biopsy allows tissue to be examined under a microscope to determine whether the abnormality is benign or malignant.
Not every male breast lump requires a biopsy, but a suspicious finding should always be investigated appropriately.
Early diagnosis provides the opportunity to establish a treatment plan before the disease progresses.
How Is Breast Cancer in Men Treated?
Treatment depends on the type and stage of cancer, its biological characteristics and the patient’s overall health.
As with breast cancer in women, treatment is often planned through a multidisciplinary team involving breast surgeons, oncologists, radiologists, pathologists and other specialists.
Surgery remains an important component of treatment for many patients.
Because men typically have relatively little breast tissue, mastectomy, involving removal of the breast tissue, is commonly performed.
However, breast-conserving surgery may be appropriate for selected patients, depending on the location and extent of the tumour.
Assessment or treatment of the lymph nodes may also be necessary.
Additional treatment may include radiotherapy, endocrine therapy, chemotherapy or targeted treatments, depending on the tumour’s characteristics and stage.
Reconstructive techniques may occasionally be required to address significant chest wall defects or contour changes following cancer surgery.
The aim of treatment is first and foremost to achieve appropriate cancer control while considering function, appearance and long-term quality of life.
Not Every Enlarged Male Breast Is Cancer
Having discussed male breast cancer, it is equally important to recognise that the majority of male breast enlargement is caused by benign conditions.
One of the most common is gynaecomastia.
Many men become concerned when they notice swelling or fullness around the nipple, particularly when the change is more pronounced on one side.
While any new or unexplained breast change deserves appropriate assessment, glandular enlargement is far more commonly associated with benign gynaecomastia than breast cancer.
Understanding what gynaecomastia is can help explain why the male chest sometimes changes in shape or size.
What Is Gynaecomastia?
Gynaecomastia is the benign enlargement of glandular breast tissue in males.
It usually develops in response to changes in the balance between oestrogen and androgen activity.
The condition may affect one or both breasts and can produce a rounded or prominent appearance of the chest, particularly around the nipple-areola complex.
Some men notice a firm or rubbery area directly beneath the nipple, occasionally accompanied by tenderness.
Gynaecomastia can develop during puberty, adulthood or later life.
During adolescence, temporary hormonal fluctuations may cause breast tissue enlargement that often resolves spontaneously.
In adults, possible contributing factors include hormonal changes, certain medications, anabolic steroid use and underlying medical conditions.
In some patients, no specific cause is identified.
Importantly, gynaecomastia is not breast cancer and is not considered a precancerous condition.
However, the presence of apparent gynaecomastia should not prevent further investigation when suspicious symptoms or examination findings are present.
Gynaecomastia vs Male Breast Cancer: What’s the Difference?
Although both conditions can produce changes in the male breast, their typical clinical features differ.
| Feature | Gynaecomastia | Male breast cancer |
|---|---|---|
| Nature | Benign glandular enlargement | Malignant growth |
| Typical location | Usually centred beneath the nipple | May be beneath or adjacent to the nipple |
| Consistency | Often rubbery or firm | May be hard or irregular |
| Pain | May be tender, especially when developing | Often painless |
| Distribution | May affect one or both breasts | Usually affects one breast |
| Nipple or skin changes | Usually absent | May include inversion, discharge or skin changes |
These differences can help guide clinical assessment, but they cannot reliably distinguish benign from malignant disease without an appropriate examination and, when indicated, further investigations.
A new lump should never be dismissed solely because it appears similar to gynaecomastia.
Can Gynaecomastia Be Treated?
Treatment depends on the underlying cause, the duration of the condition and the degree of breast enlargement.
For adolescents or patients with recent-onset gynaecomastia, observation may be appropriate because the enlargement can resolve naturally.
Where a medication or underlying medical condition is contributing to the problem, addressing that cause may help.
However, longstanding glandular enlargement is less likely to disappear without surgical treatment.
For men who experience persistent breast prominence, discomfort or significant self-consciousness, surgery may be considered.
Liposuction
When excess fatty tissue contributes to chest enlargement, liposuction may be used to improve the chest contour.
However, liposuction alone may not adequately remove dense glandular breast tissue.
Glandular excision
When firm glandular tissue is present beneath the nipple, direct surgical excision may be necessary.
This is commonly performed through an incision along the edge of the areola, allowing removal of the glandular tissue while placing the scar at a natural skin transition.
In many patients, liposuction and glandular excision are combined to create a smoother and more natural chest contour.
Skin excision
In more severe cases, particularly following substantial weight loss or longstanding enlargement, excess skin may also need to be removed.
This requires careful planning of the scars, nipple position and overall chest shape.
The most appropriate approach depends on the individual’s anatomy and goals.
Can Exercise or Weight Loss Correct Gynaecomastia?
This is one of the most common questions men ask.
The answer depends on whether chest enlargement is caused primarily by fat, glandular tissue or a combination of both.
When the enlargement is predominantly fatty, often referred to as pseudogynaecomastia, weight loss may improve the appearance of the chest.
However, true gynaecomastia involves glandular tissue that does not reliably disappear with exercise or weight reduction.
This explains why some men have relatively low body fat and well-developed pectoral muscles but continue to experience prominence around the nipples.
In these cases, surgical correction may be considered after appropriate assessment.
What Should You Expect After Gynaecomastia Surgery?
Recovery depends on the extent of surgery and the techniques used.
Patients undergoing limited glandular excision and liposuction may return to light activities relatively quickly, while more extensive procedures require a longer recovery period.
Swelling, bruising and temporary changes in nipple sensation are common during the early stages of healing.
A compression garment may be recommended to help manage swelling and support the tissues.
Strenuous exercise, heavy lifting and chest training are generally restricted for a period determined by the surgeon.
Although the chest contour often improves relatively early, residual swelling may take several months to settle, and scars continue to mature over time.
As with any surgical procedure, potential risks include bleeding, infection, fluid collections, contour irregularities, asymmetry and changes in nipple sensation.
Careful surgical planning and realistic expectations remain essential.
Final Thoughts
Breast Cancer Awareness Month is an important reminder that breast health is not exclusively a women’s issue.
Although male breast cancer is rare, it remains a potentially serious condition that deserves greater public awareness.
Men should feel comfortable discussing changes in their breast tissue and seeking medical assessment when something appears unusual.
At the same time, it is important to recognise that most male breast enlargement is benign, with gynaecomastia representing one of the most common causes.
Distinguishing between glandular enlargement, excess fatty tissue and suspicious breast changes requires an appropriate clinical assessment.
At WHC Plastic Surgery, we believe that understanding the underlying cause of a concern is the foundation of appropriate treatment. Whether assessing persistent gynaecomastia or providing reconstructive care following breast disease, our approach centres on careful evaluation, patient safety and individualised surgical planning.
As we conclude Breast Cancer Awareness Month, we hope to encourage greater awareness of breast health among both women and men.
Breast cancer may be uncommon in men, but awareness should never be.
Breast health belongs to everyone. Understanding what is normal for your body and seeking medical advice when something changes are important steps towards lifelong health.
Our companion article on gynaecomastia covers the benign condition in its own right, and our piece on breast surgery and breast cancer risk looks at the same question from the other side.