Table 3.
Endoscopic Findings in Patients With Entamoeba histolytica Infection
| Finding | Asymptomatic Infections (n = 6)a |
Colitis (n = 13)a | P Value |
|---|---|---|---|
| Visible intestinal lesions | 6 (100) | 13 (100) | >.999 |
| Intestinal site of infection | |||
| Proximal sites | 6 (100) | 12 (92.3) | >.999 |
| Cecum | 6 (100) | 12 (92.3) | |
| Ascending | 1 (16.7) | 7 (53.8) | |
| Transverse | 1 (16.7) | 6 (46.2) | |
| Distal sites | 0 (0.0) | 9 (69.2) | .011 |
| Descending | 0 (0.0) | 4 (30.8) | |
| Sigmoid | 0 (0.0) | 4 (30.8) | |
| Rectum | 0 (0.0) | 8 (61.5) | |
| Macroscopic appearanceb | |||
| Erosion | 3 (50.0) | 6 (46.2) | >.999 |
| Ulcer | 3 (50.0) | 7 (53.8) | >.999 |
| Exudate | 3 (50.0) | 12 (92.3) | .071 |
| Bump | 1 (16.7) | 2 (15.4) | >.999 |
| Identification of Entamoeba by histopathology | 4 (66.7) | 6 (46.2) | .629 |
Data are presented as no. (%) unless otherwise indicated.
aEach case in both infection groups was diagnosed with E. histolytica infection by polymerase chain reaction only of the stool sample, because both cases had been evaluated by endoscopy by a previous doctor. A detailed evaluation of the clinical specimens collected by endoscopy was not available, except for the histopathologic findings.
bDefinition of each macroscopic appearance during endoscopy is described in the Methods.