An uncommon cause of haematochezia in an adult with skin rash

Endoscopic and radiographic features of gastrointestinal involvement in vasculitis

“…Serious complications include intussusception, infarction, and perforation [6,13] . The descending duodenum and the terminal ileum are frequently involved, with endoscopic characteristics of diffuse mucosal redness, petechiae, hemorrhagic erosions and ulcers [14] .Longitudinal ulcers may be clear evidence of mesenteric vascular involvement (Figure 2) [15] . The CT features are bowel wall thickening with the target sign and engorgement of mesenteric vessels with comb sign (Figure 2) [15] .…”

“…The descending duodenum and the terminal ileum are frequently involved, with endoscopic characteristics of diffuse mucosal redness, petechiae, hemorrhagic erosions and ulcers [14] .Longitudinal ulcers may be clear evidence of mesenteric vascular involvement (Figure 2) [15] . The CT features are bowel wall thickening with the target sign and engorgement of mesenteric vessels with comb sign (Figure 2) [15] . Systemic lupus erythematosus: Systemic lupus erythematosus (SLE) is an autoimmune connective tissue disease with local deposition of antigen-antibody complexes or antibodies inducing necrotizing vasculitis [3] .…”

“…The CT features are mass-like lesions and Contrast-enhanced computed tomography scan of the abdomen showed diffuse thickening of the ileum (target sign) with mesenteric hypervascularity in a palisading pattern (comb sign), suggesting ischemic ileitis; C, D: Single balloon enteroscopy showed edematous petechiae with linear ulcers in the affected ileum. All figures and legends are reproduced from Hokama et al [15] with permission from BMJ Publishing Group Ltd. unevenly thickened bowel wall with marked enhancement [3,22] . Barium examination shows a large irregular ulcer with marked thickening of the surrounding intestinal wall ( Figure 5).…”