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Left-sided ulcerative colitis. At colonoscopy [CS], absent vascular pattern, erythema, erosions, and rare ulcers [Mayo 3] [A]. At bowel ultrasound [BUS], longitudinal and transverse sections of sigmoid colon with a 5-mm wall thickening and presence of blood signals at power Doppler. Some lymph nodes are present surrounding the pathological intestinal tract [B].
