Occurrence of vomiting and diarrhea in patients with acquired immunodeficiency syndrome was most frequently attributed to enteropathogens organism that invade the gastrointestinal tract because of the immunologic unbalance of the host... Among several causes the cryptosporidium has been detected quite often and its predominant localization was the gastrointestinal tract, although other extraintestinal sites has also been reported. In both cases, erosive congestive gastritis was found, while histological examination showed cryptosporidium in gastric biopsy specimens.