Table 4.

Mucosal Abnormalities Observed at Colonoscopy and Following Histological Analysis

Bowel preparation	Endoscopic findings	Microscopic findings
SD-PEG	Aphthous ulceration of terminal ileum	Acute inflammation, moderate, with ulcer
	Erythema of terminal ileum	Acute inflammation, moderate, no ulcer
	Erythema of cecum	Acute inflammation, focal, mild, no ulcer
	Erythema of transverse colon	Acute inflammation, focal, mild, no ulcer
	Erythema of rectum	Acute inflammation, focal, mild, no ulcer
LV-PEG+Asc	Aphthous ulceration of cecum	Acute inflammation, moderate, with ulcer
	Aphthous ulceration of ascending colon	Acute inflammation, moderate, with ulcer
	Erythema of cecum	Acute inflammation, focal, mild, no ulcer
	Erythema of ascending colon	Acute inflammation, focal, mild, no ulcer
	Erythema of ascending colon	Acute inflammation, focal, mild, no ulcer
	Erythema of rectum	Acute inflammation, focal, mild, no ulcer

SD-PEG, split-dose polyethylene glycol; LV-PEG+Asc, low-volume polyethylene glycol+ascorbic acid.