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Introduction ▪ Endoscopic dacryocystorhinostomy (DCR) is a well-established treatment for epiphora caused by anatomic or functional obstruction of the nasolacrimal apparatus. ▪ A thorough understanding of the endonasal anatomy, wide marsupialization of the lacrimal sac, and meticulous care of the…
Introduction ▪ The anterior ethmoid artery (AEA) and the posterior ethmoid artery (PEA) are major vessels supplying the ethmoid sinus, septum, and anterior skull base. ▪ Control of these vessels is a key step in performing extended sinus and skull…