... involvement is very rare. In this case report, the -authors present a case of upper gastrointestinal bleeding caused by a gastric ulcer with a challenging etiological diagnosis. In Portugal, there have been reports in the past century of autochthonous cases of S. stercoralis infection suggesting endemic zones...

..., quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Gastric ulcer Colorectal cancer Cancer Stomach Gastrointestinal tract...