Round worm infestation in fundus of stomach: a rare case presentation.

A case of a 27-year-old female, in whom a 10cm long round worm (Ascaris lumbricoides) was found in the fundus of stomach, is reported here. In this patient, Ascaris lumbricoides upward migration of the worm to the fundus of stomach, its rare phenomenon, worm mostly seen in the small intestine. This is mainly because of the high gastric ac idity. In this patient, we believe proton pump inhibitor (PPI) use caused hypochlorhydria and coexistence H. pylori infection caused chronic atrophic gastritis, which resulted in the retrograde migration of the roundworm to the stomach in our patient.