title: Sinus pericranii in the left frontal region involving the superior eyelid: a case report.
abstract: BACKGROUND
  Sinus pericranii is a rare asymptomatic communication between the intracranial and extracranial venous drainage pathways. The venous flow in this condition circulates through abnormal dilated veins in both directions.
  
  
  METHODS
  We describe an unusual location of an accessory sinus pericranii that involved the left frontal bone along with the superior orbital rim and the upper eyelid, with special focus on therapy.
  
  
  RESULTS
  The patient did not have any complication during the first and second surgery. Final outcome was excellent. The patient did not show any evidence of disease recurrence 1 year after the surgery.
  
  
  CONCLUSIONS
  We propose a multidisciplinary approach in the treatment of such lesions with a two-step surgery. Excision of the sinus pericranii is possible if the sinus pericranii is not a major venous outflow channel of the brain, which can be evaluated by angiography.
authors: Department of Neurosurgery, Clinical Hospital Dubrava, Zagreb, Croatia.
authors: Gordan
authors: G
authors: Grahovac
authors: Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York, United States.
authors: Prajwal
authors: P
authors: Rajappa
authors: Department of Neurosurgery, Clinical Hospital Dubrava, Zagreb, Croatia.
authors: Milorad
authors: M
authors: Vilendecic
authors: Department of Plastic and Reconstructive Surgery, Clinical Hospital Dubrava, Zagreb, Croatia.
authors: Rado
authors: R
authors: Zic
authors: Department of Pathology, Clinical Hospital Dubrava, Zagreb, Croatia.
authors: Smiljka
authors: S
authors: Lambasa
authors: Department of Neurosurgery, Clinical Hospital Dubrava, Zagreb, Croatia.
authors: Stefan
authors: S
authors: Prgomet
mesh_terms: D016025:Bone Transplantation / Q000379:methods; D002533:Cerebral Angiography; D005143:Eyelids / Q000473:pathology*; D005625:Frontal Lobe / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019635:Neurosurgical Procedures / Q000379:methods; D009915:Orbit / Q000473:pathology; D020779:Sinus Pericranii / Q000150:complications / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult