Pitfalls in the Diagnosis of Obscure Gastrointestinal Bleeding from Gastrointestinal Stromal Tumor of Jejunum; Case Report and Literature Review

Case Presentation: We report a case of an 80-year-old male who presented with recurrent episodes of GI bleeding over a period of seven months without a definite diagnosis. Different diagnostic modalities including upper endoscopies, colonoscopies and CT scan of the abdomen without intravenous (IV) contrast have failed to find the source of bleeding. The capsule endoscopy that was done during a phase of active bleeding showed up a lesion in the jejunum, and a push enteroscopy confirmed a tumor in the jejunum. The patient underwent surgical resection of the tumor, and histology was consistent with GIST. Subsequently, the GI bleeding stopped, and no further recurrences of bleeding happened.