Eponymous “valves” of the nasolacrimal drainage apparatus. II. Frequency of visualization on dacryocystography

We examined 92 normal DS‐DCGs on patients aged 14–82 years (71% female, 29% male). We observed “valves” most reliably in the inferior nasolacrimal duct: the inferior valve of Hasner (plica lacrimalis) was present in 98.9% of cases, and more superiorly, the valve of Taillefer (93.5%) and the valve of Krause (79.3%). Contrastingly, we infrequently identified the very superior “valves”: Foltz or Bochdalek in 17.1%, Rosenmüller or Huschke in 46.4%, and Auberat in 40% of cases. Therefore, unlike the inferior NDA valves, these more superior “valves” were less consistently identified and are presumed to be simple mural mucosal irregularities rather than true structural valves. These findings will be useful in diagnostic interpretation of DS‐DCGs and th erapeutic planning for patients undergoing luminal procedures on the NDA. Clin. Anat., 2018. © 2018 Wiley Periodicals, Inc.

Source: Clinical Anatomy - November 8, 2018 Category: Anatomy Authors: Vivek Yedavalli, Devsmita Das, Tarik F. Massoud Tags: Original Communication Source Type: research