Megaduodenum associated with gastric strongyloidiasis

•He experienced a long gap without symptoms that were relieved following the surgery performed in his infancy. Nonetheless, no biopsy examination from the duodenum has been done preoperatively. It could explain the delay in reaching the definitive diagnosis.•We submitted him to two surgeries.•Every patient that comes from an endemic area for Strongyloides stercoralis the hypothesis of strongyloidiasis should be considered and biopsies on stomach and duodenum should be made.

Gastric strongyloidiasis and megaduodenum are rare diseases. Gastrointestinal (GI) strongyloidiasis has many clinical features. One of them is megaduodenum. We describe a case of a 32-years-old man who has come to us from an endemic area for Strongyloides stercoralis. He had had megaduodenum diagnosed in his childhood. We submitted him to two surgeries. He has recovered just after the second surgery, a Roux-en-Y partial gastrectomy. After that, his follow-up was uneventful and the patient has gained 10 kg in weight. Histopathology confirmed gastric strongyloidiasis. In conclusion, if patients arrive from an endemic area of S. stercoralis and if they present GI symptoms or a previous diagnosis of megaduodenum, they must be considered for a histological evaluation for gastric strongyloidiasis.