An Endoscopic Endonasal Approach for Early-Stage Olfactory Neuroblastoma: An Evaluation of 2 Cases with Minireview of Literature

Figure 2

Intraoperative findings in case 1. (a) Only the cribriform plate (white arrow) was removed; biopsy of the dura mater (white arrowhead) was not performed. (b) It was confirmed through rapid intraoperative diagnosis that there was no obvious tumor infiltration in the cribriform plate mucosa, including a part of the olfactory glomeruli (white arrow), after tumor resection. (c) The dura mater was covered using a pedicled nasal septal flap (white arrow).

(a)

(b)

(c)