Two cases of skull base dural reconstruction with a polyglycolic acid felt (Dura wave®)

Endoscopic endonasal skull base surgery is now performed widely, and occasions for reconstruction for dural deficits are increasing. We present two cases of skull base reconstructions for dural deficits with polyglycolic acid (PGA) felt in endoscopic endonasal surgery. Case1: A 78-year-old male underwent surgery for olfactory neuroblastoma Kadish B. The dural defect was reconstructed with PGA felt and a contralateral nasoseptal flap. Case2: A 68-year-old female was diagnosed as having an exophytic papilloma mixed with squamous cell carcinoma in the skull base. During the resection of the skull base tumor, we noticed a dural defect at the lamina cribrosa and reconstructed it with PGA felt and a mucosal flap. Use of PGA felt for dural reconstruction is less invasive and can shorten the surgical time.