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The field defect adjacent to a colon cancer consists of the inner surface of the colon (the epithelium) that has about 1 million crypts (indentations in the surface of the epithelium). [21] Each crypt has about 5,000 cells in the shape of a test-tube and all 5,000 cells of the crypt are generated from the few stem cells at the base of the crypt.
The T stages of bowel cancer. Numbers 0 to 4, with subgroups, are used to describe deepest tumor depth: [2] TX: The primary tumor cannot be evaluated. T0: No evidence of cancer in the colon or rectum. Tis: Carcinoma in situ; Cancer cells are found only in the epithelium or lamina propria; T1: Growth into the submucosa; T2: Growth into the ...
Colorectal cancer (CRC), also known as bowel cancer, colon cancer, or rectal cancer, is the development of cancer from the colon or rectum (parts of the large intestine). [5] Signs and symptoms may include blood in the stool , a change in bowel movements , weight loss, abdominal pain and fatigue. [ 9 ]
Progression-free survival (PFS) is "the length of time during and after the treatment of a disease, such as cancer, that a patient lives with the disease but it does not get worse". [1] In oncology , PFS usually refers to situations in which a tumor is present, as demonstrated by laboratory testing, radiologic testing, or clinically.
Diagram showing T stages of bowel cancer. Date: 30 July 2014 (released by CRUK) Source: Original email from CRUK: Author: Cancer Research UK: Permission (Reusing this file) This image has been released as part of an open knowledge project by Cancer Research UK. If re-used, attribute to Cancer Research UK / Wikimedia Commons
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MRI scans of a patient with astrocytoma, showing the tumor's progression between the incidental finding in 2007 and the onset of phenotypical changes in 2014. Tumor progression is the third and last phase in tumor development. [1] This phase is characterised by increased growth speed and invasiveness of the tumor cells.
The most common form of colon cancer is adenocarcinoma, constituting between 95% [2] and 98% [3] of all cases of colorectal cancer. Other, rarer types include lymphoma, adenosquamous and squamous cell carcinoma. Some subtypes have been found to be more aggressive. [4]