Role of endoscopy in the surveillance and management of colorectal neoplasia in inflammatory bowel disease

Table 4 SCENIC consensus nomenclature of dysplasia in inflammatory bowel disease

Term	Definition
Visible dysplasia	Dysplasia confirmed histologically on a targeted biopsy
Invisible dysplasia	Dysplasia on a random biopsy
Polypoid	Lesion protruding ≥ 2.5 mm into the lumen
Non polypoid	Lesion protruding < 2.5 mm into the lumen or not protruding
Superficial elevated	Protrusion < 2.5 mm
Pedunculated	Attached to mucosa via stalk
Sessile	Not attacked via stalk; base contiguous with mucosa
Flat	No protrusion above mucosa
Depressed	At least a portion of lesion depressed below mucosa
Ulcerated	Fibrinous appearing base within lesion
Distinct border	Easily identified from surrounding mucosa
Indistinct border	Not discrete; difficult to distinguish from surrounding mucosa