<unk>  are projecting masses of scar tissue that develop from granulation tissue during the healing phase in repeated cycle of ulceration (especially in inflammatory bowel disease). Inflammatory tissue without malignant potential,<unk>  may represent either regenerating mucosal islands between areas of ulceration, edematous polypoid tags or granulation tissue covered by epithelium. There are reported cases when localized giant<unk> sis resulted in intestinal obstruction. Residual mucosal islands between ulcerated and denuded areas of mucosa may have a polypoid appearance and are referred to as<unk> . Polyposis syndromes, such as familial adenomatous polyposis, could give rise to a similar appearance on imaging, although the clinical presentation would differ from that of inflammatory<unk> sis. Numerous, confluent ulcerations with bulging of the edematous residual mucosa determine a cobblestone appearance at endoscopy.
Pseudopolyps
Keratin pearl
Cameron lesions
Aberrant crypt foci
Hyperkeratinization
Polyp 
Subepidermal calcified nodule
Nodular sclerosis