in this article, the prcsigrnoid avenue to pertroclivai region is introduced and the advantage of such an approach is disusscd. ten patients were operated on by this approach. two illustrative cases are also presented.

AIM To explore the clinical value of bone flap creation and the sinus protection in the approach of retrosigmoid keyhole craniotomy with the guidance of three-dimensional (3D) sliced computer tomography (CT) reconstruction of the skull transverse sinus and sigmoid sinus groove. MATERIAL AND METHODS The scalp tracings of the transverse sinus and sigmoid sinus groove of 108 posterior fossa lesi...

OBJECTIVES To show that mechanical compression of sigmoid sinus is effective for treatment of pulsatile tinnitus caused by sigmoid sinus enlargement, and to evaluate the relationship between the compression degree of sigmoid sinus and the tinnitus symptom relief using magnetic resonance angiography. METHODS Medical records of twenty-four patients who were diagnosed with venous tinnitus caused...

A 20-year-old woman was admitted to a Gynecology Hospital in her 6th month of pregnancy for high blood pressure and tonic-clonic seizure. Primary diagnosis was eclampsia, and for that reason she underwent cesarean section. She also had headache on frontal and parietal areas without nausea or vomiting. There was not a focal neurological sign. Rheumatology consultation was requested. Systemic lup...

BACKGROUND AND PURPOSE Bone wax is a hemostatic agent that has been reported in some instances to migrate into the sigmoid sinus following posterior fossa surgery. The purpose of this study was to characterize the CT and MR imaging findings of this entity. MATERIALS AND METHODS The study included 212 consecutive patients who underwent posterior fossa surgery and postoperative CT and contrast-...

BACKGROUND AND PURPOSE Transverse sinus thrombosis can have nonspecific clinical and radiographic signs. We hypothesized that the novel "sigmoid notch sign" (on head CT) can help differentiate transverse sinus thrombosis from a congenitally atretic sinus among individuals with absent signal in 1 transverse sinus by MR venography. METHODS We retrospectively evaluated 53 subjects with a unilate...

BACKGROUND AND PURPOSE Recognition of shunted pouches dural arteriovenous fistula allows us to treat the disease effectively by selective embolization of the pouches at first. However, the shunted pouches in transverse-sigmoid sinus dural arteriovenous fistulas have not been well-documented. Our aim was to evaluate the angioarchitecture of transverse-sigmoid sinus dural arteriovenous fistulas, ...

The sigmoid sinus diverticulum (SSD) is an increasingly recognized cause of pulsatile tinnitus (PT). Surgical reconstruction of the sigmoid sinus wall has been found to be highly effective for SSD; however, surgical techniques still need to be refined to reduce the incidenceof serious postoperative complications. Moreover, scrutinizing more cases of SSD is desirable for establishing the diagnos...

Background The location of the sigmoid sinus within the mastoid cavity is quite variable. An anteriorly- displaced vertical segment of the sigmoid sinus constitutes an uncommon but dangerous anatomical variation that surgeons rarely encounter during surgery. In this variation, the sigmoid sinus lays underneath a very thin bony flap, which makes it easily damaged. Thus, an abrupt fatal bleeding ...

  Chronic suppurative otitis media (CSOM) is a common childhood infectious disease in developing countries. It may be associated with various life threatening intra-cranial or extra-cranial complications. We report a 10 year-male child with a rare combination of right sided unsafe CSOM, mastoiditis, Bezold abscess, sigmoid and transverse sinus thrombosis, and bilateral abducens nerve palsy and ...