Breast Lumps: When to Worry and What To Check
Last updated: 27 Aug 2026
You found a lump in your breast. Your heart rate is already climbing. Your mind is already at worst-case scenario. And you are not sure whether to call a specialist, go to the hospital, or wait and see if it goes away.
Take a breath. Here is the most important thing to know right now: 9 out of 10 women who see a doctor about a breast lump have a benign condition, not cancer. The overwhelming majority of breast lumps are fibroadenomas, cysts, or fibrocystic changes, all of which are non-cancerous and manageable.
That does not mean you should ignore it. Every new breast lump should be assessed. But it does mean that the most likely outcome is reassurance, not a cancer diagnosis. And the fastest way to get that reassurance is not to wait, not to Google, and not to go straight to a specialist. It is to see your GP.
Regis Medical Women's Health Clinic
Patient-first, Holistic, Dedicated Healthcare
Why Your GP Is the Right First Step
Many women assume that a breast lump requires an immediate specialist appointment. In reality, your GP is trained to perform a clinical breast examination, assess your risk factors, and determine whether imaging or a specialist referral is needed. In most cases, your GP can begin this process on the same day you call.
A clinical breast examination involves your doctor physically examining both breasts, noting the size, shape, texture, and mobility of any lumps, checking for skin changes, nipple changes, or lymph node enlargement, and correlating what they find with your age, menstrual cycle, and medical history.
This examination alone provides significant clinical information. Many benign lumps have characteristic features that an experienced GP can recognise. A smooth, round, mobile lump in a woman in her 20s is almost certainly a fibroadenoma. A tender, lumpy area that changes with your menstrual cycle in a woman in her 30s is likely fibrocystic change. A smooth, fluid-filled lump in a woman over 40 may be a cyst.
If the clinical examination raises any concern, or if the lump does not have clearly benign characteristics, your GP will refer you for breast imaging (mammogram, ultrasound, or both) and, if needed, to a breast specialist. This referral process is typically fast. You are not losing time by seeing your GP first. You are gaining a clinical assessment that guides the next step appropriately.
What Breast Lumps Feel Like at Different Ages
The type of lump you are most likely to find depends partly on your age, because the breast tissue itself changes over the decades.
- In your 20s - the most common lump is a fibroadenoma. These are solid, smooth, round, and freely movable. They feel like a marble under the skin. Fibroadenomas are benign and are related to normal breast development. They can grow, shrink, or remain stable. They do not become cancerous.
- In your 30s - fibrocystic changes are the most common cause of breast lumpiness. These present as areas of thickened, rope-like breast tissue, often in the upper outer quadrants of both breasts. They are driven by normal hormonal fluctuations and tend to become more tender and prominent in the week before your period. Fibrocystic changes are not a disease. They are a normal variation of breast tissue.
- In your 40s and beyond - breast cysts become more common. Cysts are fluid-filled sacs that can appear suddenly, feel smooth and round, and may be tender. They are diagnosed by ultrasound and can be drained with a needle if they are causing discomfort. Cysts are benign.
Breast cancer can occur at any age, but the risk increases after 40 and peaks between 55 and 69 in Singapore. According to the Singapore Cancer Registry, 1 in 12 Singaporean women will develop breast cancer in her lifetime, with approximately 2,787 new cases diagnosed each year. Notably, 1 in 6 cases is diagnosed in women under 45, which is why any new, persistent lump at any age deserves assessment.
What Makes a Lump More Concerning
While most lumps are benign, certain features should prompt you to see your doctor without delay.
- A lump that is hard and irregularly shaped rather than smooth and round - Cancerous lumps tend to have uneven edges and feel firmly fixed in place rather than mobile.
- A lump that does not move when you push it - Benign lumps are typically mobile within the breast tissue. A lump that feels anchored to the skin or the chest wall is more concerning.
- Skin changes over the lump - Dimpling, puckering, redness, thickening, or a texture resembling orange peel (peau d'orange) over or near the lump warrants prompt evaluation.
- Nipple changes - Spontaneous nipple discharge (especially if bloody or occurring from only one breast), nipple inversion (a nipple that has recently turned inward), or persistent crusting or scaling around the nipple should be assessed.
- A lump that does not change with your menstrual cycle - Benign lumps, particularly fibrocystic changes, often fluctuate with your cycle, becoming more prominent before your period and less so afterward. A lump that remains constant regardless of where you are in your cycle is more likely to need investigation.
- A new lump that persists for more than two to three weeks - Lumps that appear briefly and resolve may be related to hormonal changes. A lump that remains after a full menstrual cycle should be examined.
- Swollen lymph nodes under the arm or near the collarbone - Painless, firm swelling in these areas alongside a breast lump is a reason to see your doctor promptly.
None of these features means you have cancer. They mean the lump needs further evaluation to confirm what it is. That evaluation is straightforward and, in most cases, reassuring.
What Happens After Your GP Assessment
If your GP identifies a lump that warrants further investigation, the next step is breast imaging.
- Ultrasound is typically the first imaging modality for women under 40 because younger breast tissue is denser and less well visualised on mammography. Ultrasound can distinguish between solid lumps and fluid-filled cysts and provide detailed information about size, shape, and internal structure.
- Mammography is recommended for women aged 40 and above and is the standard breast cancer screening tool. It can detect lumps, calcifications, and other changes that may not be palpable on clinical examination.
- In some cases, both ultrasound and mammography are used together. If imaging identifies a suspicious lesion, the next step is a tissue biopsy (usually a core needle biopsy performed under ultrasound guidance), which provides a definitive diagnosis.
Your GP coordinates this referral pathway. At Regis Medical, our Doctors can assess your lump, determine the appropriate next step, and refer you to an accredited imaging centre or breast specialist, usually within the same week. You do not need to navigate the system alone.
Breast Self-Awareness: What You Should Do Monthly
The Singapore Cancer Society recommends that all women aged 20 and above perform a monthly breast self-examination. The goal is not to diagnose lumps yourself. It is to become familiar with the normal look and feel of your breasts so that you notice when something changes.
Your breasts will naturally feel different at different times of the month. They may feel lumpier, heavier, or more tender before your period. The best time to examine them is a few days after your period ends, when hormonal swelling has subsided and the tissue is at its softest.
What you are looking for is change: a new lump that was not there before, a change in shape or symmetry, skin changes, nipple changes, or persistent tenderness in one specific area. If you notice any of these, do not wait for your next screening appointment. See your doctor.
Screening Beyond Self-Examination
Self-examination is valuable but has limitations. It cannot detect lumps that are too small to feel, and it cannot characterise lumps with the precision of imaging. This is why mammography screening is recommended in addition to self-examination.
Singapore's national guidelines recommend mammography every one to two years for women aged 40 to 49 (after discussion with your doctor), and every two years for women aged 50 to 69. Women with a family history of breast cancer may be advised to begin screening earlier and at more frequent intervals.
At our women's health clinic, our Doctors discuss breast cancer risk as part of routine women's health screening. We assess your personal and family risk factors, ensure you are up to date with mammography, and refer for imaging when clinically indicated. If you have a family history of breast cancer, we can advise on whether earlier or more frequent screening is appropriate for your situation.
Do Not Let Fear Delay You
The most dangerous response to finding a breast lump is not panic. It is avoidance. Waiting weeks or months because you are afraid of what a doctor might find is understandable, but it works against you.
If the lump is benign, which it probably is, earlier assessment gives you peace of mind sooner. If the lump is something that needs treatment, earlier detection leads to better outcomes. More than 7 in 10 breast cancer cases in Singapore are now diagnosed at early stages, and early-stage breast cancer has an excellent prognosis.
Either way, seeing your doctor is the step that helps you. Waiting is the step that does not.
Your GP is the right place to start. A clinical examination takes minutes, provides immediate clinical information, and sets the next step in motion. At Regis Medical, our Doctors assess breast concerns with care, thoroughness, and sensitivity. If you have found a lump, or if it has been a while since your last breast check, reach out.
Regis Medical Women's Health Clinic
Patient-first, Holistic, Dedicated Healthcare
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