Can methyl-tetrahydrofolat reductase (MTHFR) homozygotism cause obscure gastrointestinal bleeding? A case report

Introduction: Role of the wireless capsule endoscopy is increasing in the evaluation of patients with obscure gastrointestianl bleeding. Case: A 28 years old woman was referred to our department because of gastrointestinal bleeding. In her history several attacks of bleeding occurred since her childhood, but the source of the hemorrhage was not previously found. Neither repeated upper panendoscopies, nor enteroscopies, colonoscopies, or selective arteria mesenterica angiography performed during the massive bleeding could reveal the site and origin of the bleeding. The Tc-labelled red blood cell scintigraphy was…