The patient was taken to the operating room where a bicoronal
flap and anterior craniotomy was created to expose the orbital roof.
Among the open approaches, the placement of an osteoplastic flap through a bicoronal
incision appears to be associated with the least morbidity.
She was taken to the operating the following morning for a bicoronal
craniotomy for a gross-total tumor resection with neuronavigation (Fig 2).
Some patients had multiple suture involvement including the following suture combinations: right coronal/metopic, left lambdoid/sagittal/left coronal, sagittal/metopic, right coronal/ sagittal/metopic, bicoronal
/sagittal, and bilateral lambdoid/sagittal; and three patients had bicoronal
Surgery for a frontal sinus abscess traditionally involves a bicoronal
or spectacle incision to drain the pus and debride the affected bone.
For a tumor that is located primarily in the skull base and intracranially, a bicoronal
incision is suitable, although it allows only limited access to the ethmoid area.
After a full evaluation, we developed a treatment plan that included a bicoronal
flap surgical approach to the frontal sinus, an osteoplastic flap elevation, removal of the mucocele, and obliteration of the sinus.