Table of Contents
What Is Lobular Breast Carcinoma?
Invasive lobular carcinoma (ILC) is a breast cancer that starts in the milk-producing lobules and spreads into nearby tissue. It often does not form a distinct lump, so regular screening and noticing subtle changes in the breast are important. ILC is more common in women over 55, and it is especially important to understand invasive lobular carcinoma in elderly patients, as it can go unnoticed. Diagnosis is done with scans and a biopsy, and treatment may include surgery, hormone therapy, chemotherapy, or radiation.
What Causes Lobular Breast Cancer?
The causes of lobular cancer are not clearly known. However, several risk factors are associated with such types of cancer.
So it's essential you know these;
1. Age:
Age is the most significant risk factor for developing invasive lobular breast cancer. So roughly around 80 percent of women with breast cancer are older than 50, making age a major contributor.
2. Family History:
One important thing to understand is that having a close family member with breast cancer increases your chances. Nearly 25 percent of patients have a first-degree relative (mother, sister, or daughter) with breast cancer.
3. Genetic Mutations:
Genetic mutations are small changes in the genes that maintain the health of our cells. When these genes function properly, cells can start behaving abnormally, and this can lead to cancer.
Here’s how it happens in lobular breast cancer:
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BRCA1 and BRCA2: These genes usually repair damage inside cells. When they’re mutated, the “repair system” gets weaker, so damaged cells can grow into cancer instead of being fixed.
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CDH1 Gene: This gene is particularly important in the development of lobular cancer. It helps breast cells stick together. When CDH1 is mutated, the cells lose this adhesive property and begin to spread in a loose, scattered manner. This is exactly how lobular cancer grows.
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TP53, PTEN, and STK11: These genes usually act like protective guards that keep cell growth under control. When they are mutated, that control is lost, and cells can grow too fast or in an abnormal way, which can pose a danger.
What Are the Stages of Invasive Lobular Carcinoma?
The stages and the grading of invasive lobular breast cancer depend on the spread and the degree of involvement of the lobular carcinoma.
Based on the size and involvement of the tissue, the stages of invasive lobular carcinoma are;
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Stage 1: In this stage, the size of the carcinoma is less than two centimeters, and no lymph nodes are involved.
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Stage 2: In this stage, the size of the cancerous growth is between two to five centimeters. In stage two, the cancerous growth might have spread to the nearby lymph nodes.
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Stage 3: Invasive lobular carcinoma of stage 3 is more than five centimeters in diameter. The cancerous growth has already spread to the nearby lymph nodes and lymph nodes of the collarbone, too. Lymph nodes are tissue areas that are part of our immune system, helping to filter harmful substances in the body and fight infections. When these tissues are invaded by cancerous cells, they naturally spread to other parts of the body.
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Stage 4: In this stage, the cancerous growth has already spread to distant areas of the body.
When doctors look at invasive lobular carcinoma under a microscope, they usually see many small to medium-sized cancer cells that don’t stick together tightly. Because they are loosely connected, these cells tend to spread in a unique pattern. Most often, cancer cells grow in single lines (forming a single-file pattern) or in thin strands, and sometimes they appear to wrap around the normal breast lobules or ducts in a ring-like pattern. This microscopic study helps doctors understand the aggressiveness of the cancer.
The grading for the invasive lobular cancer is
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Grade 1: In invasive lobular carcinoma grade 1, the malignant cells closely resemble typical breast cells and generally exhibit slow growth.
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Grade 2: The malignant cells bear a strong resemblance to normal breast cells and typically grow at a moderate rate, which is faster than that of grade 1.
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Grade 3: The malignant cells appear significantly different from normal breast cells and are characterized by rapid growth. Grade 3 invasive lobular carcinoma (ILC) is associated with a heightened risk of breast cancer recurrence in the future.
What Are Lobular Breast Carcinoma Symptoms?
In many cases, symptoms of lobular carcinoma are not noticeable, and no firm lumps are apparent either. It is often found after a doctor notices a suspicious area on a screening mammogram. In other cases, a thick or swollen area in the breast can be palpated. Other unusual changes seen in the breasts of women with invasive lobular carcinoma are:
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Thickening or swelling of part or all of the breast.
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Skin changes, like redness, scaliness, or an “orange peel” texture.
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Pain in the breast or nipple.
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Changes in the nipple, like inversion or unusual discharge.
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Lumps or swelling under the arm.
Even small changes are worth checking. If something feels different from your usual breast pattern, do not wait; get it evaluated by a doctor.
How Do Healthcare Providers Diagnose Lobular Breast Cancer?
Since ILC often grows in lines rather than lumps, it can be tricky to spot on a mammogram. Depending on what your doctor sees, they may recommend additional tests such as:
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Ultrasound: Uses sound waves to create detailed images of the breast.
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MRI (Magnetic Resonance Imaging): This imaging technique provides detailed pictures and can detect cancers that mammograms may miss.
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Needle Biopsy: A small tissue sample is removed to examine for the presence of cancer cells.
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PET Scan (Positron Emission Tomography): Helps see if cancer has spread to other parts of the body.
Combining these tests enables your doctor to determine the size, location, and extent of the tumor, which aids in planning the most effective treatment.
What Are the Treatments for Invasive Lobular Carcinoma?
Invasive lobular carcinoma treatment depends on several factors, including the stage of the cancer, its severity, the patient's overall health, and their individual treatment preferences. There are many treatment options, like
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SurgerySurgery is usually the first step:
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Lumpectomy: This process removes the tumor and a small margin of healthy tissue. If cancer cells are found at the edges, more tissue may need to be removed.
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Mastectomy: Removes the entire breast. In some cases, the nipple and skin may be spared depending on your situation.
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Lymph Node Dissection: Examines nearby lymph nodes for the spread of cancer. Only extra nodes are removed if cancer is present.
Hormonal (Endocrine) Therapy: If the tumor has hormone receptors, your doctor may recommend hormone-blocking therapy. This treatment lowers hormone levels or blocks their effect, reducing the risk of cancer coming back. It can be administered before, after, or in conjunction with other treatments.
Radiation Therapy: High-energy rays target and destroy cancer cells. Radiation is usually given after lumpectomy and sometimes after mastectomy if lymph nodes are involved.
Chemotherapy: Drugs are used to kill cancer cells, either by pill or injection. Commonly used drugs include Capecitabine, Doxorubicin, Fluorouracil, Cyclophosphamide, Paclitaxel, Epirubicin, Methotrexate, Docetaxel, and Ixabepilone. Chemotherapy can either reduce the size of a tumor before surgery or destroy remnants of cancer after surgery.
Targeted Therapy: These therapies are specifically designed to target characteristics of cancer cells. Some therapies can mimic the immune system's function, enabling it to more effectively identify and destroy cancer cells.
Conclusion:
Overall, the importance of invasive lobular carcinoma (ILC) early diagnosis and medical assessment is vital to improving the outcome and long-term breast health. The reason ILC can develop in a very subtle pattern that is difficult to detect is that breast examination and routine screening mammograms, as well as timely evaluation of any suspicious changes in the breast, are highly crucial. If you notice breast thickening, changes in texture, nipple alterations, or anything that feels different from your usual breast pattern, consult an oncologist on iCliniq without delay to receive an accurate diagnosis and appropriate treatment.
Key Takeaways:
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Early detection of invasive lobular carcinoma leads to better and more successful treatment outcomes in the long run.
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ILC does not necessarily manifest as a lump, and any breast thickening, hardness, or insidiousness should be examined as soon as possible.
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Early referral to a specialist, imaging, and follow-up are major determinants of successful healing and recovery.
