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Spatial clustering of simultaneous nonhereditary gastrointestinal angiodysplasia

Small but significant correlation between nonhereditary colonic and upper gastrointestinal angiodysplasia

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Abstract

Simultaneous nonhereditary colonic and upper gastrointestinal angiodysplasia were spatially clustered in an endoscopic study of 46 consecutive patients. For example, clustering of colonic angiodysplasia was demonstrated using a nonparametric test of clustering (Kruskal-Wallis statistic with 29 degrees of freedom=76.2,P<0.0005), and a parametric test of clustering (F test statistic with 29 and 101 degrees of freedom=6.91,P<0.0005). In accord with spatial clustering, only two of 13 patients (15%) with colonic angiodysplasia who underwent panendoscopy had upper gastrointestinal angiodysplasia. Two of nine patients (22%) with upper gastrointestinal angiodysplasia who underwent colonoscopy had colonic angiodysplasia. These findings suggest that local factors may be important in the pathogenesis of simultaneous nonhereditary angiodysplasia. Possible local factors include intermittent venous obstruction, increased intraluminal pressure, intermittent abnormal arterial flow, and local vascular degeneration. Due to the approximately 20% correlation between upper and lower nonhereditary gastrointestinal angiodysplasia, the upper and lower tract should be examined by endoscopy prior to elective local resection for bleeding from gastrointestinal angiodysplasia.

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Authors and Affiliations

  1. Division of Gastroenterology of the Department of Medicine, University of Medicine of New Jersey-Robert Wood Johnson (formerly Rutgers) Medical School, 08903-0019, New Brunswick, New Jersey

    Mitchell S. Cappell MD, PhD (Director)

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  1. Mitchell S. Cappell MD, PhD
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Cappell, M.S. Spatial clustering of simultaneous nonhereditary gastrointestinal angiodysplasia. Digest Dis Sci 37, 1072–1077 (1992). https://doi.org/10.1007/BF01300289

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  • DOI: https://doi.org/10.1007/BF01300289

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