Gastric involvement in AIDS associated cryptosporidiosis

Background-Cryptosporidiosis has been shown to be a common cause of diarrhoea in both immunocompetent and immunosuppressed individuals. There are very few data on the distribution of Cryptosporidium parvum along the gastro-intestinal tract. Aims-To evaluate the location of Cryptosporidium parasites in the digestive tract of patients with AIDS. Methods-Gastrointestinal localisation of C parvum was studied in 71 patients with AIDS who underwent upper and/or lower endoscopy with biopsy for chronic diarrhoeal illness and/or other gastrointestinal disorders of unexplained origin. Results-Twenty four individuals (33.8%) were positive for C parvum, of which 16 (85.9%) had parasites in the gastric epithelium, Most patients with gastric localisation of C parvum did not show specific symptoms indicating the presence of this parasite in the stomach. Conclusions-Gastric involvement in AIDS related cryptosporidiosis is more frequent than expected, but no clear correlation between gastric location and related clinical and pathological features was observed.