Complications following endoscopic procedures have been rarely reported and spontaneous rupture of a normal spleen is an exceptional complication following a gastroscopy. This paper reports a case of a spontaneous rupture of a normal spleen following a gastroscopy.

A 78-year-old man presented with iron-deficiency anemia. Gastroscopy and colonoscopy showed no significant findings. The small intestine was examined via capsule endoscopy, which revealed an Ascaris parasite in the proximal jejunum (left); it was observed for approximately 30 minutes. Distally, in the proximal ileum, a similar but shorter Ascaris could be seen (right). We believe that the difference in the parasites' size was due to a difference in sex-the larger one was probably female. The observation of two adult worms (male and female) in the same host is quite unusual and has been achieved only by capsule endoscopy.

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