A polyp refers to an abnormal growth in a mucous membrane. In the colon, these growths develop in the surface lining of the membrane. It is worth noting that polyps can also manifest in other parts of the body, including the nasal passages, mouth, uterus and genital area, and bladder. While the majority of colon polyps are noncancerous, there are instances where they continue to grow irregularly and become cancerous. It is important to differentiate between the two main shapes of colon polyps and the four different types they can belong to. Keep reading to discover more about these types, including which ones have the potential to be malignant (cancerous) and which ones are benign.
Pedunculated Polyps: An Overview
Pedunculated polyps are one of the different shapes that colon polyps can take. These polyps are characterized by raised growths that are attached to the surface of the mucous membrane by a long stalk, similar to the structure of a mushroom. The top of the polyp is bulbous, while the stalk resembles a stem. Due to their protrusion into the colon space, pedunculated polyps are easily detectable, almost as if they were standing upright.
While the general structure of pedunculated polyps remains the same, slight variations may occur depending on the specific type of polyp. To determine the exact type of polyp, tests are necessary.
Sessile Polyps
Sessile polyps are a type of colon polyp that has a distinct shape. Unlike pedunculated polyps, sessile polyps lie flat on the surface of the mucous membrane, making them harder to detect. These polyps do not have a stalk and are often overlooked during examinations because they blend in more easily. However, it is important not to underestimate their potential harm. Sessile polyps are more likely to develop into cancerous growths as they can remain on the lining of the colon for a longer period before being diagnosed and treated. Additionally, removing sessile polyps is more challenging and typically requires surgical intervention.