What Do Dense Breasts Have to Do with Breast Cancer?

Upon learning that breast density is linked to an increased risk of breast cancer, many women will be quick to check by touch or appearance if their breasts are dense. Unfortunately, breast density can only be confirmed with an imaging examination. Dr Lim Siew Kuan, our Senior Consultant and Breast Surgeon, shares more about some of the characteristics of dense breasts and how they relate to breast cancer. What are the Characteristics of Dense Breasts?A breast contains varying amounts of fibrous, glandular and fatty tissue. To be considered dense, a breast should have less fat and more glandular and fibrous tissue than is expected.It is also worth noting that dense breasts are more commonly found in young women (premenopausal) as well as older women (postmenopausal) taking hormone therapy to address symptoms of menopause.The four main categories of breast density include:Category A: Breast is composed almost entirely of fatty tissueCategory B: Breast has scattered areas of fibroglandular densityCategory C: Breast has a mix of fibroglandular and fatty tissue, also known as heterogeneous densityCategory D: Breast has extremely dense tissue with little to no fatUnderstanding the Link Between Breast Density and Breast CancerTo this day, the reason for why dense breasts increase the risk of breast cancer is undetermined. However, certain metrics reveal why breast density is cause for concern.For some context: Oral contraceptives increase breast cancer risks for women 40 – 49 years old by 1.3 times. Heterogeneously dense breasts increase the risk by 1.2 times. Extremely dense breasts increase the risk by 2.1 times. And having a first-degree relative diagnosed with breast cancer before the age of 40 increases the risk by 3.0 times.Taken as a whole, breast density is a risk factor, but it is certainly not the biggest.A family history of breast cancer, a previous personal history of breast cancer or high-risk breast lesions, as well as hereditary mutations in the Breast Cancer (BRCA) genes are more important risk factors than breast density.Challenges in Mammogram DiagnosisDense breasts pose a significant challenge when looking for traces of cancer. On a mammogram, dense tissue is presented as a white area, but so too is breast cancer.The challenge for doctors exists in interpreting the mammogram, as cancer may be hidden under the guise of dense breast tissue.Nonetheless, mammograms are still the ideal choice for women with dense breasts; anecdotal evidence reveals that mammograms are more accurate than other diagnostic tests and can detect most types of breast cancer.Alternative DiagnosticsA combination of mammography and breast ultrasound is frequently used to increase the detection of breast cancer for women with dense breasts. The addition of ultrasound allows the visualisation of small breast lesions, which may be obscured by dense tissue on mammograms.Digital breast tomosynthesis (3D mammogram) is now widely available and is preferable to 2D mammography in screening women with dense breasts. It gives improved sensitivity for cancer detection, while decreasing the false-positive rates.Breast Magnetic Resonance Image (MRI) has also emerged as another excellent imaging modality, and may be used for further assessment when both mammography and ultrasound are non-conclusive. The benefit of using MRI is that, unlike mammograms, dense breast tissue does not affect imaging results. However, the downside is an increased likelihood of false positives.Due to its high sensitivity, MRI screening is also recommended in women with a high lifetime risk of developing breast cancer.RecommendationsIf tests conclude you have dense breasts, try not to worry too much, a discussion with a breast specialist will reveal what options are available to you based on your medical history and any other relevant factors.Yearly mammogram screening is advised, but for a more conclusive result, an ultrasound, breast MRI or even genetic testing may be recommended by your doctor.If you have discovered some signs and symptoms of concern, schedule an appointment with our breast specialists for medical advice on what are the best steps to take.Article contributed and reviewed by Dr Lim Siew Kuan, Senior Consultant and Breast Surgeon at Solis Breast Care and Surgery Centre.
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Restoring Confidence Through Breast Reconstruction

Depending on the degree to which breast cancer has developed, a mastectomy (breast removal surgery) may be necessary to remove all traces of breast cancer. The result, however, is one many women would prefer to avoid. Dr Chan Ching Wan, our Senior Consultant and Breast Surgeon shares how breast reconstruction can help restore the cosmetic appearance of the breast and elaborates on the types of breast reconstruction and what to expect in the short and long term.Breast reconstruction surgery entails the use of tissue flaps taken from other parts of the body, such as the tummy and thighs, or the use of breast implants to restore the symmetry of the breasts.Generally, patients who have had a significant amount of tissue removed during breast surgery, are prime candidates for breast reconstruction.The best cosmetic results are achieved when breast reconstruction is conducted in the same sitting as cancer surgery. When done together with the cancer surgery, much, if not all, of the breast skin, including the nipple-areolar complex can be preserved, which enhances the appearance of the reconstructed breast.Immediate breast reconstruction is usually possible, however there are certain situations when it is not advisable and then a delayed procedure would have to be planned.Some patients do require radiotherapy which may cause the reconstructed breast to either lose volume, change colour, texture or appearance. If reconstruction needs to be delayed, it can still be scheduled months to years later.Types of Breast ReconstructionModern advancements have spawned a variety of breast reconstruction techniques. The type employed will depend on personal preferences, the amount of breast tissue removed, and the shape and size of the breast.There are two main techniques used to reconstruct the breast: implant reconstruction and autologous or ‘flap’ reconstruction.Implant reconstruction involves the use of a breast implant filled with saline, silicon gel or a combination of the two inserted in the breast.Meanwhile, flap reconstructions involve the use of tissue taken from other parts of the body, such as the belly or thigh, to create a new breast.It’s also worth noting that in certain situations, implant and flap reconstruction are used together.Additionally, with both techniques, it is possible to reconstruct the nipple, especially in situations where immediate reconstruction is not an option. Nipple sparing mastectomy, where the nipple and the skin surrounding it is preserved, is performed only if there is immediate reconstruction.Depending on your condition, your breast specialist will provide you with all the information necessary to make the best decision.Breast Reconstruction RisksAs with any surgery, breast reconstruction comes with certain risks. Infection may set in from having a foreign body (implants) introduced into the body. This can be treated with antibiotics; however, if the infection increases in severity, the implant may need to be removed.Furthermore, there’s always a risk (very small) of implants leaking or causing the surrounding tissues to harden (scarring also known as capsular contracture), making the reconstructed breast hard and/or lumpy to the touch.Stiffness and tightness around the chest and shoulder is common but can be addressed with early ambulation and physiotherapy.When reconstruction is done using a flap, the blood supply may sometimes not be sufficient to keep the flap alive resulting in flap failure. A re-operation may be necessary to replace the flap with another flap or implant. Fortunately, this does not happen very often at all.Oncoplastic SurgeryOncoplastic surgery differs slightly from breast reconstruction, in that plastic surgical techniques are used to restore the shape of the breast after a lumpectomy (partial breast removal).The removal of the cancer and the restoration of the breast shape is done in one operation. Occasionally, the unaffected breast will be surgically altered to be more uniform with recently treated breast.How Reconstructed Breasts Evolve with Time and AgeMost implants can be used for 10 – 15 years before needing replacement. The general shape of the breasts will not change and evolve with time or with weight gain and weight loss as natural breasts would. In addition, there’s always a risk that implants will leak or rupture.Breasts reconstructed with autologous flaps, however, can change with weight loss, weight gain and ageing, and hence are the better option for longevity.Road to RecoveryFor several days after breast reconstruction surgery, you will experience some soreness and fatigue. You should expect 5 – 7 days in hospital recovering.In the next 6 – 8 weeks, sports and other similar intensive activities should be avoided. Generally, most patients will resume normal activity after 2 – 3 months.Bruising and swelling will take up to 8 weeks to go away, and the reconstructed breast will look and feel different from a normal breast. It will feel numb, but that feeling will gradually improve over time (this may take a few years). However, there will always be some loss of sensation for all patients.Depression and anxiety may happen during recovery. It helps to seek support from your doctor, friends and family, as well as support groups.It will take 1 – 2 years for the scars to fade and tissues to heal. But fade they will – although not completely – and in time, survivors can and will feel normal and whole again.With modern surgical techniques, the benefits of plastic surgery can alleviate the negative impact of a mastectomy. Reach out to us to learn what options exist for your present needs, our breast specialists stand ready to be there with you each step of the way.Article contributed and reviewed by Dr Chan Ching Wan, Senior Consultant and Breast Surgeon at Solis Breast Care & Surgery
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