Helicobacter pylori Eradication Therapy for Thrombocytopenia after Surgery for Abdominal Aortic Aneurysm with Disseminated Intravascular Coagulation

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Abdominal aortic aneurysm (AAA) is known to be rarely accompanied by disseminated intravascular coagulation (DIC). We report a case of AAA with DIC. An 81-year-old man with abdominal pain referred to our hospital. Computed tomography demonstrated an AAA (maximum diameter: 90 mm). The patient underwent a laparotomy, and an abdominal aorta replacement was performed. At the 3-month follow-up, the patient underwent Helicobacter pylori eradication treatment for 1 week. After treatment, the platelet count dramatically increased. The mechanism by which H. pylori eradication therapy improves hematological parameters has not been elucidated; however, this noninvasive treatment effectively resolved DIC associated with AAA.