Gastritis by Strongyloides

Strongyloides stercoralis is an intestinal parasite that could be found in tropical regions. Usually infects the small intestine. The gastric involvement is a rare phenomenon. The asymptomatic chronic infection can persist for years. In pathological conditions associated with immunosuppression, the reactivation can occur in a disseminated form, associated with gastrointestinal, pulmonary or cutaneous symptoms, and with a high mortality rate. The authors describe the case of a immunocompromised patient with advanced lung cancer, with involvement of gastric mucosa by Strongyloides stercoralis. Because the clinical symptons and endoscopic findings are nonspecific, a high level of suspicion is required for diagnosis, highlighting the importance of endoscopic biopsies of any anomaly detected.