OR; The tumor measures larger than 5 cm but isn't in the axillary lymph nodes. In the study, published online in the British Journal of Cancer, the average total tumor dimension was 7.5 centimeters, or roughly 3 inches. The size of a polyp typically does make a difference. Tumor Size In Millimeters: Description: Drawing shows different sizes of common items in millimeters (mm): a sharp pencil point (1 mm), a new crayon point (2 mm), a pencil-top eraser (5 mm), a pea (10 mm), a peanut (20 mm), and a lime (50 mm). A 1.3 centimeter tumor is 1.3 centimeters, which can also be called 13 millimeters. The databases were not combined at any point for the analysis. T1a: The tumor is less than 1 cm in size. That risk increases significantly if the polyp is greater than 10 mm (1 cm); research has shown the larger a colon polyp becomes, the more rapidly it grows. T0 (T plus zero): There is no evidence of a tumor. The numbers represent how large the primary tumor has grown and how far the cancer has spread. IIIA T3. The tumor was T2, had gone into the muscle but not through the muscle wall. M0. The larger the polyp becomes, the bigger the risk of it developing into colon cancer. N0. 2 cm is on the small size. Either a single tumor larger than 2 cm (4/5 inch) that has grown into blood vessels, OR more than one tumor but none larger than 5 cm (about 2 inches) across (T2). More than one tumor, with at least one tumor larger than 5 cm … A ruler, the most common device used to measure distances, uses calibrated lines denominated into centimeters or inches, making it easy to compare between the two systems. Doctors measure cancer in millimeters (1 mm = .04 inch) or centimeters (1 cm = .4 inch). A total of 149,912 patients met study criteria and were included in the study. Patients with cancers smaller than 2 cm were analyzed, and they were divided into two groups based on tumor size: T1a ( < 1 cm) and T1b ( 1-2 cm). not sure but close enough. There are other risk factors that go along with tumor size for staging, so a small tumor may or may not be less advanced than a large tumor with other risk factors. Stage 4. T1: The tumor is 2 cm or smaller and has grown past the top layer of cells and into the layers beneath, such as the lamina propria or submucosa. The tumor measures between 2 and 5 cm and small groups of cells (between 0.2 and 2 mm) exist in the axillary lymph nodes. As someone else said on this thread, tumor size does not necessarily mean it hasn't spread to lymph nodes. Size indicates how large across the tumor is at its widest point. I believe my tumor was 1.7 to 1.8 cm. T1b: The tumor is between 1 cm and 2 cm in size. The diagnosis of cancer is confirmed. Patients with total tumor … Size is used to help determine the stage of the breast cancer. This is a little over half an inch. A T-1 tumor is up to 2 cm, a T-2 is 2-4cm, and T-3 is above 5 cm. Of these, 65% had T1a tumors and 35% had T1b tumors. A centimeter is measured using the metric system, as opposed to the imperial or U.S. system of measurement. Stages 1, 2, and 3. All of the cancer… It has not spread to nearby lymph nodes (N0) or to distant sites (M0). The pathology report says there was a 2.5 cm mass, RCC mostly grade 1 but the presence of some more defined nuclei raises it to grade 2 (I think the surgeon was surprized and was expecting grade 1), primary tumor is identified as: pT1a pNX. Also shown is a 2-centimeter (cm) ruler that shows 10 mm is equal to 1 cm. OR; The tumor measures 2 to 5 cm and there is cancer in up to three axillary lymph nodes. Size doesn’t tell the whole story, though. 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