[Giardiasis duodenitis: is the endoscopic diagnosis possible?].

60 patients (p) with ages ranging between 19 and 73 (32 females and 28 males) were selected and randomized for a prospective study about he confirmation of endoscopic wounds reported like giardiasic duodenitis: a nodular whitish puncture over the mucous with a focal or diffuse pattern over. We tested the correlation between the endoscopic findings and the results of histopathology and fecal tests. A duodenoscopy until the second portion was made with an Olympus GIF-Q equipment, 2 biopsies were taken from the duodenal bulb and from the second portion. 45 (p) exhibited a typical aspect before mentioned. In this group we found the protozoa in the biopsies of 35 (p) (77.78%). The fecal test were positive for 22 of these (p) (48.88%) and negative for 23 (51.12%). 15 (p) had a normal duodenoscopy; 13 of these (p) had a negative biopsy (86.66%) and only two cases (13.33%) resulted in a positive biopsy for giardia. The results for the fecal tests were negative in 93.34% (p). The most common symptoms were: upper-abdominal pain (67.50), acidity (62.50%), pyrosis (25%) diarrhea (10%) and constipation (10%). The results of our study confirm that endoscopic lesions of duodenum observed as a whitish nodular puncture, over the mucous with a focal or diffuse pattern were compatible with a duodenitis caused by giardia lamblia. It was confirmed in the majority of cases with biopsy and in almost 50% of fecal test performed.