Today, endoscopic endonasal approach is considered the gold standard in skull base surgery of the chiasmosellar region. Advances in transnasal endoscopic skull base surgery allow conducting more extensive interventions via wider approaches which requires more complicated plastic closure of the skull base defect. In 2006, G. Haddad et al. suggested using a vascularized nasoseptal flap to reconstruct a skull base defect. This method is generally accepted at present due to its reliability and low frequency of postoperative complications. The purpose of this article is to analyze publications on possible complications and pathological conditions of the nasal cavity when using a vascularized nasoseptal flap for skull base surgery after removal of neoplasms of the chiasmo-sellar region. The study included articles found in the Pubmed database (2006–2020) which described frequency and character of complications caused by skull base defect reconstruction by a nasoseptal flap after transnasal removal of chiasmo-sellar neoplasms. According to the literature review, the following complications are reported: cerebrospinal fluid leak, flap necrosis and infectious complications, pathological changes in the nasal cavity: prolonged crusting, synechiae, epistaxis, septum perforation, sinusitis, subatrophic changes of mucosae, nasolacrimal duct obstruction, olfactory dysfunction. The authors conclude that the nasoseptal flap is, undoubtedly, an effective material for reconstruction of dural defects by endoscopic endonasal skull base surgery, because of its good viability due to the preserved blood supply and high tightness of the plasty. However, there is a risk of complications in the nasal cavity. For these reasons, development of effective methods for prevention of nasal complications after using a vascularized flap in endoscopic endonasal surgery is an important issue today.
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