Question
What type does pedicleless pediatric polyp belong to?
Answer
Pediatric polyps typically have pedicles, but only a very small number may be pedicleless, presenting as tiny and without muscular features. These polyps usually measure between 1 to 3 millimeters in size, with polyps smaller than 1 millimeter often appearing spherical or nodular with a lobulated structure. Visually, they are often red, accompanied by necrosis or superficial ulcers. Histologically, these polyps originate from the mucosa, with pathological features including the expansion of the lamina propria, mucinous cysts filled with mucus, and glands containing well-differentiated mucous cells. The stroma is significantly widened, rich in connective tissue, blood vessels, and inflammatory cells. Occasionally, a small amount of smooth muscle cells can be seen due to the expansion and rupture of the glands. Additionally, granuloma reactions induced by plasmids may also be observed.