title: Unilateral sixth nerve palsy.
abstract: BACKGROUND
  The diagnosis of cerebral venous sinus thrombosis still remains a real challenge. Seizure, unusual headache with sudden onset, unexplained persistently unilateral vascular headache and neurologic deficit-which is difficult to be attributed to a vascular territory are some of the suggestive symptoms.
  
  
  METHODS
  An isolated sixth nerve palsy is discussed as a rare presentation for cerebral venous thrombosis. Following the extensive investigation to rule out other possible diagnoses, magnetic resonance venogram revealed the final etiology of sixth nerve palsy that was ipsilateral left transverse sinus thrombosis; therefore, anticoagulant treatment with low molecular weight heparin was administered.
  
  
  CONCLUSIONS
  Rapid and accurate diagnosis and treatment cause to achieve excellent outcomes for most patients. Considering different clinical features, risk factors and high index of suspicion are helpful to reach the diagnosis.
authors.affiliation: Tehran University of Medical Sciences, Department of Emergency Medicine, Sina Hospital, Hasan Abad Square, Imam Khomeini Ave, Tehran, Iran.
authors.forename: Mehran
authors.initials: M
authors.lastname: Sotoodehnia
authors.affiliation: Tehran University of Medical Sciences, Department of Emergency Medicine, Sina Hospital, Hasan Abad Square, Imam Khomeini Ave, Tehran, Iran.
authors.forename: Arash
authors.initials: A
authors.lastname: Safaei
authors.affiliation: Tehran University of Medical Sciences, Department of Emergency Medicine, Sina Hospital, Hasan Abad Square, Imam Khomeini Ave, Tehran, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Rasooli
authors.affiliation: Tehran University of Medical Sciences, Department of Emergency Medicine, Sina Hospital, Hasan Abad Square, Imam Khomeini Ave, Tehran, Iran. Electronic address: m-bahreini@tums.ac.ir.
authors.forename: Maryam
authors.initials: M
authors.lastname: Bahreini
mesh_terms: D020434:Abducens Nerve Diseases / Q000175:diagnosis* / Q000209:etiology; D000925:Anticoagulants / Q000627:therapeutic use*; D006261:Headache / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012851:Sinus Thrombosis, Intracranial / Q000000981:diagnostic imaging* / Q000188:drug therapy*; D055815:Young Adult
chemical_list: D000925:Anticoagulants
keywords: Cranial sinus thrombosis; Magnetic resonance imaging; Sixth cranial nerve palsy