In stage IA, a tumor measures up to 20 millimeters (about the size of a grape), and there's no cancer in the lymph nodes. Stage IB can be described as either: a small tumor in the breast that is less than 20 millimeters plus small clusters of cancer cells in the lymph nodes; or.
Stage 1A means that the cancer is 2 centimetres (cm) or smaller and has not spread outside the breast.
T1: Tumor is smaller than 2 cm across. T2: Tumor is 2 to 5 cm across. T3: Tumor is larger than 5 cm across. T4: Any size tumor is growing into chest walls or skin.
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.
Primary breast tumors vary in shape and size. 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.
Cancers of exactly 2 cm in size occupy a special niche in breast oncology. That size is the one at which breast cancer is most commonly diagnosed (the “modal size”) and 2.0 cm marks the boundary between stage i and ii for node-negative breast cancers and between stage ii and iii for node-positive breast cancers.
On average, breast cancers double in size every 180 days, or about every 6 months. Still, the rate of growth for any specific cancer will depend on many factors. Every person and every cancer is different.
Drawing shows different sizes of a tumor in centimeters (cm) compared to the size of a pea (1 cm), a peanut (2 cm), a grape (3 cm), a walnut (4 cm), a lime (5 cm), an egg (6 cm), a peach (7 cm), and a grapefruit (10 cm).
Most fibroadenomas are 1–2 cm in size, but they can grow as large as 5 cm. Simple fibroadenomas are the most common type of fibroadenoma. They are made up of one type of tissue. Simple fibroadenomas don't increase the risk for breast cancer.
Breast cancer symptoms at stage 1 may include: Nipple discharge. Dimpling of the skin. Swelling or redness of the breast.
Chemotherapy is not usually offered for stage 1 breast tumours. It may be offered after surgery (called adjuvant therapy) for these tumours if there is a high risk that the cancer will come back (recur). Find out more about the risk of breast cancer recurrence and adjuvant therapy.
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.
Or Stage IIA may show a 2 to 5 cm tumor in the breast with or without spread to the axillary lymph nodes. Stage IIB: The tumor is 2 to 5 cm and the disease has spread to 1 to 3 axillary lymph nodes. Or the tumor is larger than 5 cm but has not spread to the axillary lymph nodes.
Stage 1 is highly treatable, however, it does require treatment, typically surgery and often radiation, or a combination of the two. Additionally, you may consider hormone therapy, depending on the type of cancer cells found and your additional risk factors.
Surgery is the main treatment for stage I breast cancer.
But if you will need radiation therapy after surgery, it is better to wait to get reconstruction until after the radiation is complete.
Knowing the stage and grade helps doctors decide on the best treatment for you: The stage of a cancer – this describes its size and whether it has spread from where it started. You may need a few scans and tests to find out the stage.
The number of cancer cells is a function of tumour volume in cubic centimetres. Each cell is about 20 μm in diameter. A 1-cm cancer has about 100 million cells, a 0.5-cm cancer has about 10 million cells, and a 1-mm cancer has about 100 thousand cells.
Tumor size is an important factor when doctors are determining the stage of a person's breast cancer. However, healthcare professionals also take into account several other factors, including: lymph node involvement.
The grade is based on how much the cancer cells look like normal cells. The grade is used to help predict your outcome (prognosis) and to help figure out what treatments might work best. A low grade number (grade 1) usually means the cancer is slower-growing and less likely to spread.
Breast cancer has to divide 30 times before it can be felt. Up to the 28th cell division, neither you nor your doctor can detect it by hand. With most breast cancers, each division takes one to two months, so by the time you can feel a cancerous lump, the cancer has been in your body for two to five years.
So, a cell dividing at this rate can grow large in a relatively short time. The time it takes for a lung cancer tumor to grow to this stage is generally 3 – 6 months. This is the smallest size at which the tumor can be detected, but often learning of lung cancer takes years of cellular development.
Stage II: The tumor is larger than 2 cm in size, but does not invade nearby organs, has not spread to the lymph nodes, and has not spread to other parts of the body (T2 or T3, N0, M0).
Stage 1 breast cancer
Stage 1A means the cancer is 2cm or smaller and has not spread outside the breast. The cancer in the breast is 2cm or smaller and a very tiny area of breast cancer (0.2mm–2mm) is found in the lymph nodes under the arm (micrometastasis).
Have a tumor smaller than 5 cm (2 inches), that is also small relative to the size of the breast. Are not pregnant or, if pregnant, will not need radiation therapy immediately (to avoid risking harm to the fetus)