title: Complications of severe bleeding in a patient with undiagnosed Factor XI deficiency.
mesh_terms: D000328:Adult; D000783:Aneurysm / Q000209:etiology; D005145:Face / Q000098:blood supply; D005173:Factor XI Deficiency / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D006472:Oral Hemorrhage / Q000209:etiology*; D010514:Periodontal Pocket / Q000601:surgery*; D010518:Periodontitis / Q000601:surgery*