alexa Hemorrhagic colitis in postdiarrheal hemolytic uremic syndrome: retrospective analysis of 54 children.
Genetics & Molecular Biology

Genetics & Molecular Biology

Cloning & Transgenesis

Author(s): Rahman RC, Cobeas CJ, Drut R, Amoreo OR, Ruscasso JD,

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Abstract Hemorrhagic colitis (HC) is a severe manifestation of the hemolytic uremic syndrome (HUS). We performed a retrospective analysis of patients with HC with the following aims: (1) to characterize the clinicopathologic features; (2) to evaluate mortality rate; (3) to analyze severity of renal and central nervous system (CNS) disease. Patients with HC assisted between 1981-2009 were evaluated and compared with a control group of 137 patients without HC. Among 987 patients with diarrheal prodrome (D) + HUS, 54 (5.5\%) presented HC. Clinical findings included abdominal pain (96\%), distension (93\%), hematochezia (44\%), and abdominal mass (11\%). Surgery was indicated in 35 patients (65\%), and 17 (48.5\%) required bowel resection. Transverse and ascending colon were most frequently affected. Macroscopic evaluation showed bowel necrosis (18) and perforation (12). Histologic evaluation (29) showed that 25 (86.2\%) had necrosis of the affected segment (transmural in 21). A leukocyte count >20,000/mm(3) and hematocrit >30\% were more common in HC patients than in controls (p < 0.001 and p < 0.0001, respectively). Mortality rate was higher in HC patients (33.3\%) than in controls (1.4\%; p < 0.0001). Dialysis >10 days, seizures, and coma were more frequent in HC patients than in controls (p < 0.0001). In summary, most patients had prominent abdominal findings, and almost 2/3 patients required surgery. Transverse/ascending colon was most affected, and the main histologic finding was transmural necrosis. Higher hematocrit and leukocytosis were frequent. Mortality rate was extremely high, and most had long-lasting anuria and severe neurologic involvement. This article was published in Pediatr Nephrol and referenced in Cloning & Transgenesis

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