Fig. 2.
Computed tomography scans: a. favourable anatomical conditions for surgical approach; b. difficult case due to particular anatomical findings of anterior ethmoidal cells (asterisk). Arrows indicate surgical approach to identify lacrimal sac.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.