A polypoid lesion is a tumor that may or may not have a stalk and is located within the colon of the intestines. A polypoid lesion may be either non-neoplastic, or benign, or it may be adenomatous, or cancerous. Polypoid lesions within the colon are only diagnosed through a colonoscopy, and a lesion is generally biopsied and sent to a laboratory to determine its pathology.Know More
A sessile polyp is a type of polypoid lesion, but it doesn't have the characteristic stalk of most polypoid lesions. Flat polyps may also be found within the colon. This type of lesion doesn't have a raised surface and can be difficult to detect from the surrounding colonic mucosa.
Most lesions found during a colonoscopy examination turn out to be polypoid lesions. A study conducted by Henry Ford Hospital found that more than half the polypoid lesions discovered during its five-year study were benign. The study found little evidence that polypoid lesions automatically lead to a colon cancer diagnosis.
However, the study found that villous adenomatous lesions generally do contain cancerous cells, especially if the adenomatous lesion is large. Resection of the lesion or resection of particular segments of the bowel may be necessary to prevent the spread of any infiltrating cancer from these types of lesions.Learn more about Biology
The colon, also referred to as the large intestine, removes excess nutrients to form stools and transports this product to the rectum. This organ is part of the digestive system and is essential in the removal of waste.Full Answer >
The colon, also referred to asÂ the large intestine, is the last section of the digestive tract. The colon consists of the cecum,Â the ascending colon, transverse colon, descending colon, sigmoid colon and rectum. Â While the cecum is the first section of colon that is found in the lower right abdominal region, the rectum is the last region where stool is stored.Full Answer >
Generally, most varieties of sweet and field corn produce one or two ears per stalk. Early maturing sweet corn produces a single ear, while late maturation types produce two. Only the first ear produced is sold because the second ear is smaller and inferior in quality.Full Answer >
The calyx of a flower is the group of leaf-like or petal-like structures arranged at the base of the flower or the top of the stalk. The calyx is often, but not always, green. In some plants, the calyx is the same color as the true petals.Full Answer >