Ultrasound-guided @entity1173 of XXXX through a single burr hole.

@entity1 @entity772 @entity733 @entity867 @entity1173
Surgical @entity1173 and/or drainage of @entity867 is considered to be the first-line treatment for @entity733 larger than 25 mm. This is ususally performed with the aid of CT-guided stereotaxy. A method of ultrasound guidance is presented that allows a single burr hole approach with real-time imaging of the whole procedure. A bayonet-like shaped ultrasound probe with tip dimension of 8 x 8 mm only (EUP-NS 32, Hitachi/Ecoscan) with frequencies of 3.5 and 5 MHz is used. After placement of a burr hole the target is identified by transdural insonation, a guideline is adjusted and a mounted puncture-adapter guides the cannula towards the lesion under real-time imaging control. Up to now 12 @entity733 in 10 @entity1 were treated. Visualization was always excellent. A second @entity1173 had to be performed twice. One abscess did not contain enough pus to be cured by @entity1173 and was removed by open surgery, another could not be tapped by the blunt cannula and was aspirated under stereotactic control using a sharp trocar. Outcome was excellent in 6 @entity1 and fair in 2 @entity1 but this was due to the pre-existing disease. Two @entity1 admitted in deep @entity772 died despite an emergency operation. The presented method has proven to be a very powerful guiding tool in the surgical treatment of @entity867 through a single burr hole approach.
