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صفحۀ غربالی
CSF rhinorrhea is noted in only 2% to 3% of cases of serious head trauma.17 The presence of a skull base fracture is associated with a CSF fistula in 12% to 30% of cases.18 Over 50% of CSF fistulas that result from accidental head trauma are located at the anterior cranial base, and most of them involve the cribriform plate.19,20 The majority of traumatic CSF leaks become clinically evident within 2 days, and almost all manifest within 3 months after the traumatic event.21 Most CSF fistulas that result from accidental head trauma resolve spontaneously or with conservative management that includes lumbar drain-
In particular, the lateral lamella of the cribriform plate (LLCP) has been well recognized as an area of potential weakness (Fig. 52-1).
Coronal sinus computed tomography of the lateral lamella of the cribriform plate (arrow) forms the weakest part of the skull base.
If the skull base defect involves the cribriform plate, patients may report hyposmia, anosmia, and/or parosmia.
, cribriform plate) or even just a side.
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