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 quadrant is 6 o’clock in breast?
1 Central portion of breast. lower inner quadrant is between 3 and 6 o’clock; the lower outer quadrant is between 6 and 9 o’clock; and the upper outer quadrant is between 9 and 12 o’clock.
Where is superior region of breast?
The breast lies on top of the pectoral muscle, which in turn rests on the thoracic cage. Rough boundaries of the breast are as follows: Superior aspect of the breast is bounded by the clavicle. Inferiorly by the inframamary crease (“bra line”)
What is the lateral aspect of the breast?
At the lateral edges of the breast, the tail of Spence extends in the axilla. The underlying breast is made of glandular (milk-producing) and fatty tissue. The ratio of fat versus glandular varies depending on age, post-menopausal, post-partum, or pregnancy status.
What quadrant has most breast cancers?
Most breast cancers develop in the upper outer quadrant of the breast, closest to the armpit. This is because this area has a lot of glandular tissue.
What part of breast are most cancers found?
(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.
Where is 9 o’clock right breast?
Facing your right breast, the upper outer quadrant is in the 9:00 o’clock to 12:00 o’clock position. The reason more breast cancer lumps occur in the upper outer part of the breast isn’t clear, but this area has a lot of glandular tissue.
Where are breast lumps most common?
In women, breast cancer lumps are usually found in the upper outer quadrant of the breast. In men, they’re usually found near the nipple.
What is the most common site for breast tumors?
Where are breast cancer lumps most often located? Several studies have found that the upper outer quadrant of the breast is the most frequent site for breast cancer occurrence. That would be the part of your breast nearest the armpit.
What is a breast quadrant?
The breasts are divided by an invisible line running up and down and right to left through the nipple. Each of these 4 regions is called a quadrant. Most breast cancers develop in the upper outer quadrant of the breast, closest to the armpit.
How fast do breast tumors grow?
Results. Tumor growth varied considerably between subjects, with 5% of tumors taking less than 1.2 months to grow from 10 mm to 20 mm in diameter, and another 5% taking more than 6.3 years. The mean time a tumor needed to grow from 10 mm to 20 mm in diameter was estimated as 1.7 years, increasing with age.
What quadrant is 9 o’clock breast?
What kind of breast lump should I worry about?
Lumps that feel harder or different from the rest of the breast (or the other breast) or that feel like a change are a concern and should be checked. This type of lump may be a sign of breast cancer or a benign breast condition (such as a cyst or fibroadenoma).
What are the most aggressive breast cancers?
Triple-negative breast cancer (TNBC) is considered an aggressive cancer because it grows quickly, is more likely to have spread at the time it’s found, and is more likely to come back after treatment than other types of breast cancer.
Is a 2 cm tumor considered large?
The smallest lesion that can be felt by hand is typically 1.5 to 2 centimeters (about 1/2 to 3/4 inch) in diameter. Sometimes tumors that are 5 centimeters (about 2 inches) — or even larger — can be found in the breast.
Does the size of a breast tumor determine the stage?
Finding a breast cancer’s stage is a multi-step process. The tumor’s size and location help healthcare professionals determine the cancer’s stage.
What quadrant is 3 o’clock left breast?
In the left breast the upper outer quadrant is between 12 and 3 o’clock.
What does cancerous breast lump feel like?
A cancerous lump may feel rounded, soft, and tender and can occur anywhere in the breast. In some cases, the lump can even be painful. Some women also have dense, fibrous breast tissue. Feeling lumps or changes in your breasts may be more difficult if this is the case.
What does a cancerous lump feel like?
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.
Is it better to be HER2-negative or positive?
Breast cancer cells with higher than normal levels of HER2 are called HER2-positive. These cancers tend to grow and spread faster than breast cancers that are HER2-negative, but are much more likely to respond to treatment with drugs that target the HER2 protein.
Is it better to have a lumpectomy or mastectomy?
The main advantage of lumpectomy is that it can preserve much of the appearance and sensation of your breast. It is a less invasive surgery, so your recovery time is shorter and easier than with mastectomy.
What stage is a 2 cm tumor?
T0: No evidence of primary tumor. T1 (includes T1a, T1b, and T1c): Tumor is 2 cm (3/4 of an inch) or less across. T2: Tumor is more than 2 cm but not more than 5 cm (2 inches) across. T3: Tumor is more than 5 cm across.
Does the size of a tumor determine the stage?
The stage of a cancer describes the size of a tumour and how far it has spread from where it originated. The grade describes the appearance of the cancerous cells. If you’re diagnosed with cancer, you may have more tests to help determine how far it has progressed.
What is the average size of a breast tumor?
The average size of a tumor is 1 cm when found during regular breast self-exams. The average size of a tumor is 2.62 cm when found by women who do not do self-exams.
How many breast lumps are cancerous?
Breast changes over the course of a woman’s life are common. Your genes and stage of life, from puberty to menopause, can all affect how your breasts develop, look, and feel. Sometimes breast lumps develop that are benign (noncancerous). Only 3% to 6% of breast lumps are due to breast cancer.