title: Bilateral transverse sinus thrombosis secondary to a homozygous C677T MTHFR gene mutation.
abstract: We describe the case of a previously healthy young man who presented with headache, diplopia, nausea, vomiting, and bilateral papilledema. Magnetic resonance venography of the brain revealed thrombosis of the right transverse sinus. Blood tests showed elevated homocysteine levels, and coagulation studies revealed a homozygous C677T mutation and a heterozygous A1298C mutation of the methylenetetrahydrofolate reductase (MTHFR) gene. The patient had no other etiology for venous thrombosis. We recommend screening patients who present with sinus thrombosis for MTHFR gene mutations.
authors.affiliation: Department of Internal Medicine, Faculty of Medicine, Wayne State University, Detroit, Michigan, USA. zkanaan@med.wayne.edu
authors.forename: Ziad M
authors.initials: ZM
authors.lastname: Kanaan
authors.forename: Rami
authors.initials: R
authors.lastname: Mahfouz
authors.forename: Ali
authors.initials: A
authors.lastname: Taher
authors.forename: Raja A
authors.initials: RA
authors.lastname: Sawaya
mesh_terms: D000293:Adolescent; D000925:Anticoagulants / Q000008:administration & dosage / Q000627:therapeutic use; D006493:Heparin / Q000008:administration & dosage / Q000627:therapeutic use; D006579:Heterozygote; D006710:Homocysteine / Q000097:blood / Q000235:genetics; D006720:Homozygote; D006801:Humans; D007275:Injections, Intravenous; D020227:Lateral Sinus Thrombosis / Q000150:complications* / Q000235:genetics; D018810:Magnetic Resonance Angiography; D008297:Male; D042965:Methylenetetrahydrofolate Reductase (NADPH2) / Q000235:genetics*; D009154:Mutation; D016896:Treatment Outcome
chemical_list: D000925:Anticoagulants; D006710:Homocysteine; D006493:Heparin; D042965:Methylenetetrahydrofolate Reductase (NADPH2)