Twenty patients with portal hypertension related to a variety of causes prospectively underwent colonoscopy for hematochezia (n = 10), hemoccult positive stool and anemia (n = 9), or polyp found with screening flexible sigmoidoscopy (n = 2) (includes 1 patient with anemia/heme-positive stool). Twelve patients (60%) had previously undergone a course of sclerotherapy, and 10 (50%) had endoscopie ....