Which breast quadrant is most commonly affected by breast cancer?
Many studies have shown that the upper outer quadrant of the breast is the most frequent site for occurrence of breast cancer .
Which one is the most frequent location of breast cancer?
(Eighteen percent of breast cancers occur in the nipple area, 11 percent in the lower out quadrant, and 6 percent in the lower inner quadrant.) ANY change in size, shape, texture or nipple that occurs in one breast only is more dangerous than if such changes happen simultaneously in both breasts in the same position.
What is the upper outer quadrant of the breast called?
The tail of Spence (Spence’s tail, axillary process, axillary tail) has historically been described as an extension of the tissue of the upper outer quadrant of the breast traveling into the axilla.
Can you get breast cancer in upper inner quadrant?
According to the results of the previous study, the upper outer quadrant is the most frequent site of the tumor (52%) as compared to other quadrants. The second most frequent site reported was the upper inner quadrant (16%) .
Which side of the breast is prone to cancer?
Breast cancer occurs more frequently in the left breast than the right. The left breast is 5%-10% more likely to develop cancer than the right breast.
Where are breast tumors usually located?
Tumour location within the breast varies with the highest frequency in the upper outer quadrant (UOQ) and lowest frequency in the lower inner quadrant (LIQ).
Where is the first place breast cancer usually spreads?
Lymph nodes. The lymph nodes under your arm are the first place breast cancer is most likely to spread. It might also travel into the tissue surrounding your breast, like in your chest, or it might travel up to your collarbone or lower neck.
What are the 4 quadrants of the breast?
The breasts are divided into 4 quadrants with the nipple as the center. UO: upper outer; UI: upper inner; LO: lower outer; LI: lower inner.
What is the most common metastasis sites for cancer cells?
The most common sites for cancers to metastasize include the lungs, liver, bones and brain. Other places include the adrenal gland, lymph nodes, skin and other organs. Sometimes, a metastasis will be found without a known primary cancer (point of origin).
Which part of the breast is most sensitive?
We found that the skin of the superior quadrant was the most sensitive part of the breast, the areola was less sensitive, and the nipple was the least sensitive part. The cutaneous sensibility of all tested areas decreased significantly with increasing breast size and increasing breast ptosis.
Where is the thickest part of the breast?
Composed of epidermal cells. Contains sebaceous glands and hair follicles. Covers the subcutaneous layer of breast tissue. Thickest at the base of the breast (inferior crease line)
Which cell layer of the breast must be compromised for carcinoma to be invasive?
In fact, it is now known that disruption in the myoepithelial cell layer is the most distinct sign of tumor invasion in breast cancer.
Where are the lymph nodes in breast?
The lymphatic system is a network of lymph nodes and lymph ducts that helps fight infection. Lymph nodes found under the armpit, above the collarbone, behind the breastbone and in other parts of the body trap harmful substances that might be in the lymphatic system and safely drain them from the body.
How many different types of breast cancer are there?
Types of breast cancer include ductal carcinoma in situ, invasive ductal carcinoma, inflammatory breast cancer, and metastatic breast cancer.
Are cancerous lumps painful?
Bumps that are cancerous are typically large, hard, painless to the touch and appear spontaneously. The mass will grow in size steadily over the weeks and months. Cancerous lumps that can be felt from the outside of your body can appear in the breast, testicle, or neck, but also in the arms and legs.
Which lymph nodes does breast cancer spread to first?
The lymph nodes under your arm are the first place breast cancer is most likely to spread. It might also travel into the tissue surrounding your breast, like in your chest, or it might travel up to your collarbone or lower neck.
What are the 4 subtypes of breast cancer?
Breast cancer has four primary molecular subtypes, defined in large part by hormone receptors (HR) and other types of proteins involved (or not involved) in each cancer: Luminal A or HR+/HER2- (HR-positive/HER2-negative) Luminal B or HR+/HER2+ (HR-positive/HER2-positive) Triple-negative or HR-/HER2- (HR/HER2-negative)