{"id":1154,"date":"2025-10-01T18:07:30","date_gmt":"2025-10-01T12:37:30","guid":{"rendered":"https:\/\/cancereducationnetwork.com\/blog\/?p=1154"},"modified":"2025-10-01T18:24:05","modified_gmt":"2025-10-01T12:54:05","slug":"what-is-breast-cancer-causes-symptoms-risk-factors","status":"publish","type":"post","link":"https:\/\/cancereducationnetwork.com\/blog\/what-is-breast-cancer-causes-symptoms-risk-factors\/","title":{"rendered":"What Is Breast Cancer? Causes, Symptoms & Risk Factors"},"content":{"rendered":"\n


Breast cancer is the most common cancer affecting women worldwide, though men can also develop it. Early detection offers a very high chance of long-term survival. Yet many delay screening or overlook subtle warning signs, limiting treatment options and affecting outcomes. On cancereducationnetwork.com<\/a>, we believe informed patients make stronger decisions\u2014so this guide is for you and your loved ones. If you’re in Lucknow and seeking expert care, you should know about the, breast cancer specialist in Lucknow<\/a><\/em> \u2013 Dr. Harshvardhan Atreya.<\/p>\n\n\n\n

What Is Breast Cancer?<\/strong>
Breast cancer occurs when breast cells begin growing abnormally, forming a lump or mass. While many cancers start in the milk ducts (ductal carcinoma), some begin in the lobules (lobular carcinoma) or other breast tissues.
These malignant cells can break through their original location, invade nearby tissues, and travel via lymphatic or blood vessels to distant organs in a process called metastasis.
Breast cancer affects both women and men, though far less common in men. Familiarity with risk factors, symptoms, and treatment options empowers patients to act early.<\/p>\n\n\n\n

Types of Breast Cancer<\/strong>
Breast cancer is not one disease\u2014but many, distinguished by location, behavior, and molecular traits:
Ductal Carcinoma In Situ (DCIS)<\/strong>
Non-invasive, confined to the milk ducts. It doesn\u2019t spread, but may progress to invasive cancer if untreated.<\/p>\n\n\n\n

Invasive Ductal Carcinoma (IDC)<\/strong>
The most common form (\u2248 70\u201380% of cases). It begins in the ducts, then invades the surrounding breast tissue and possibly the lymph nodes.<\/p>\n\n\n\n

Invasive Lobular Carcinoma (ILC)<\/strong>
Starts in lobules and can invade nearby tissues. It may be harder to detect on imaging because it can grow in a less consolidated pattern.<\/p>\n\n\n\n

Inflammatory Breast Cancer (IBC)<\/strong>
Aggressive and fast-growing. Instead of forming a distinct lump, it causes redness, swelling, and skin changes as cancer cells block lymph vessels.<\/p>\n\n\n\n

Triple-Negative Breast Cancer (TNBC)<\/strong>
Lacks oestrogen receptors, progesterone receptors, and HER2 protein. Because it doesn\u2019t respond to hormone or HER2-targeted therapy, it often behaves more aggressively.<\/p>\n\n\n\n

HER2-Positive Breast Cancer<\/strong>
Has excess HER2 protein, which fuels growth. It tends to be more aggressive but often responds well to HER2-targeted treatments.<\/p>\n\n\n\n

Hormone Receptor-Positive Breast Cancer<\/strong>
These cancers grow in response to oestrogen (ER-positive) or progesterone (PR-positive). They are among the more treatable types, thanks to hormone therapies.<\/p>\n\n\n\n

Paget\u2019s Disease of the Nipple<\/strong>
Begins in the ductal tissue and spreads to the nipple skin. Symptoms include itching, flaking, or discharge; they are often associated with underlying DCIS or IDC.<\/p>\n\n\n\n

Phyllodes Tumours<\/strong>
Rare tumours of the breast\u2019s connective tissue. They may be benign, borderline, or malignant, and tend to grow rapidly.<\/p>\n\n\n\n

Male Breast Cancer<\/strong>
Rare, often manifesting as invasive ductal carcinoma in men. Because it\u2019s less expected, diagnosis is often delayed.<\/p>\n\n\n\n

What Causes Breast Cancer & Who Is at Risk?<\/strong>
The exact cause is typically unknown. Breast cancer develops through a mix of genetic, hormonal, and environmental influences. Below are known risk factors:
Genetic Mutations<\/strong>
Inherited mutations\u2014especially BRCA1 and BRCA2\u2014play a significant role. People with family histories of breast or ovarian cancer may consider genetic counselling.
Hormonal Influence<\/strong>
Prolonged exposure to oestrogen and progesterone increases risk. Early menstruation, late menopause, or long-term hormone replacement therapy contribute to this risk.
Age & Cellular Damage<\/strong>
Risk rises with age, as more DNA damage accumulates in breast cells over time.
Lifestyle & Environmental Factors<\/strong>
Some modifiable factors include:<\/p>\n\n\n\n