Colorectal cancer screening and surveillance in patients with inflammatory bowel disease in 2021

Table 2 SCENIC international consensus

Term	Definition
Visible dysplasia	Dysplasia identified on targeted biopsies from a lesion visualized in colonoscopy
Polypoid	Lesion protruding from the mucosa into the lumen ≥ 2.5 mm
Pedunculated	Lesion attached to the mucosa by a stalk
Sessile	Lesion not attached to the mucosa by a stalk: entire base is contiguous with the mucosa
Nonpolypoid	Lesion with little (< 2.5 mm) or no protrusion above the mucosa
Superficially elevated	Lesion with protrusion but < 2.5 mm above the lumen (less than the height of the closed cup of a biopsy forceps)
Flat	Lesion without protrusion above the mucosa
Depressed	Lesion with at least a portion depressed below the level of the mucosa
General descriptors
Ulcerated	Ulceration (fibrinous base with depth) within the lesion
Border
Distinct border	Border of the lesion is discrete and can be distinguished from surrounding mucosa
Indistinct border	Border of the lesion is not discrete and cannot be distinguished from surrounding mucosa
Invisible dysplasia	Dysplasia identified on random (non-targeted) biopsies of colon mucosa without a visible lesion