Clinical Study
False-Negative Results of Endoscopic Biopsy in the Diagnosis of Gastrointestinal Kaposi’s Sarcoma in HIV-Infected Patients
Table 3
Rate and causes of false-negative endoscopic biopsy results for GI-KS lesions on univariate analysis.
| | | GI-KS lesions | Lesions with true-positive results | Lesions with false-negative results | P value | | | () | () | () |
| | Site | | | | | | Upper GI tract | 67 (57.8%) | 39 (68.3%) | 28 (52.0%) | 0.09 | | Esophagus | 4 (3.45%) | 0 | 4 (9.76%) | <0.01 | | Stomach | 32 (27.6%) | 19 (25.3%) | 13 (31.7%) | 0.46 | | Duodenum | 31 (26.7%) | 20 (26.7%) | 11 (26.8%) | 0.99 | | Ileum | 6 (5.17%) | 5 (6.67%) | 1 (2.44%) | 0.33 | | Lower GI tract | 49 (42.2%) | 36 (48.0%) | 13 (31.7%) | 0.09 | | Right-side colon | 20 (17.2%) | 15 (20.0%) | 5 (12.2%) | 0.29 | | Left-side colon | 12 (10.3%) | 8 (10.7%) | 4 (7.32%) | 0.88 | | Rectum | 11 (9.48%) | 8 (10.7%) | 3 (7.32%) | 0.56 | | Size <10 mm | 23 (19.8%) | 10 (13.3%) | 13 (31.7%) | <0.05 | | Macroscopic appearance | | | | | | Patches | 40 (34.5%) | 18 (24.0%) | 22 (53.7%) | <0.01 | | Polypoid lesion | 1 (0.86%) | 1 (1.33%) | 0 | 0.46 | | SMT | 46 (39.7%) | 31 (41.3%) | 15 (36.6%) | 0.62 | | SMT with ulcer | 26 (22.4%) | 22 (29.3%) | 4 (9.76%) | <0.05 | | Bulky mass | 3 (2.59%) | 3 (4.00%) | 0 | 0.19 |
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GI: gastrointestinal; SMT: submucosal tumor.
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