[Is the uncinate process resection the key to endonasal dacryocystorhinostomy?].

Endonasal dacryocystorhinostomy is technically more difficult than the classic method and apparently less rational. The nasal fossa is a variable and potentially dangerous anatomic region. The uncinate process "opens the door" to the middle meatus and covers, in almost all cases, the junction between the lacrymal bone and maxillary concha. A marker almost always found. Uncinate process resection is a natural way to access the lacrymal apparatus. Associated with transillumination of the lacrymal duct, uncinate process resection, is in our opinion, a reliable and, most importantly, reproducible method for an endonasal approach to the lacrymal sac. With resection, endonasal dacryocystorhinostomy becomes a simple, safe and rapid procedure.