Colonic schistosomiasis mimicking cancer, polyp, and inflammatory bowel disease: Five case reports and review of literature

Figure 1 Colonoscopy image showing diffusely inflamed rectal mucosa and a mass-like lesion (Case 1).

Figure 2 Biopsy showing numerous Schistosoma eggs (arrow) and chronic inflammatory infiltrates in the colonic mucosa for Case 1.

Figure 3 Microscope images. A: Low power magnification photomicrographs showing Schistosoma eggs embedded within the mucosa surrounded by dense eosinophilic infiltrates (× 10 magnification); B: High power magnification of Schistosoma egg and surrounding eosinophil (× 40 magnification) for Case 2.

Figure 4 Schistosoma egg embedded within colonic mucosa, with a lateral spine with surrounding eosinophil predominant inflammatory response (× 40 magnification) for Case 3.

Figure 5 Patchy inflamed colonic mucosa (Case 4).

Figure 6 Several Schistosoma ova surrounded by mixed inflammatory cells predominated by eosinophils and with granuloma formation (Case 4).

Figure 7 Inflamed mucosa with granularity on colonoscopy (for Case 5).

Figure 8 Several Schistosoma eggs surrounded by inflammatory cells (Case 5).