Bleeding Gastric Heterotopic Polyp in the Duodenum of a Teenager with Severe Factor VII Deficiency.

Heterotopic gastric tissue can be found throughout the intestinal tract, and when it is present in the small intestine, it can present with symptoms that include gastrointestinal bleeding, chronic abdominal pain, diarrhea, and chronic dyspepsia. This finding is incredibly rare in pediatrics, but if present, it can lead to significant morbidity and mortality. This can be especially true if a patient presents with a comorbidity of a bleeding disorder. We here present the case of a teenage male with a history of severe factor VII deficiency who was found to have iron deficiency anemia resulting in multiple blood transfusions from an occult lower gastrointestinal bleed. He was ultimately found to have a bleeding gastric heterotopic polyp in his duodenum that was successfully removed via surgery.