OBJECTIVE: The purpose of this article is to report computed tomography demonstration of medial bowing of the lamina papyracea in 5 patients after internal ethmoidectomy. METHODS: We identified 5 patients who had apparent medial bowing of the lamina papyracea after functional endoscopic sinus surgery (FESS) and who had preoperative scans available. Preoperative and postoperative scans were reviewed using a 3-dimensional workstation to ensure similar angulation of the slices before measurement. Measurements of the interorbital distance and also the position of the posterior margin of the globe relative to a line connecting the lateral orbital walls were performed. RESULTS: Each of the patients demonstrated a decrease in the interorbital distance on the postoperative scan. Measurement of globe position showed that 9 of the 10 globes lay in a more posterior position within the orbit on postoperative examination. CONCLUSIONS: Medial bowing of the lamina papyracea may occur as a result of FESS and may lead to relative enophthalmos in comparison. The incidence of this phenomenon is unknown because most patients are not reimaged after FESS.
OBJECTIVE: The purpose of this article is to report computed tomography demonstration of medial bowing of the lamina papyracea in 5 patients after internal ethmoidectomy. METHODS: We identified 5 patients who had apparent medial bowing of the lamina papyracea after functional endoscopic sinus surgery (FESS) and who had preoperative scans available. Preoperative and postoperative scans were reviewed using a 3-dimensional workstation to ensure similar angulation of the slices before measurement. Measurements of the interorbital distance and also the position of the posterior margin of the globe relative to a line connecting the lateral orbital walls were performed. RESULTS: Each of the patients demonstrated a decrease in the interorbital distance on the postoperative scan. Measurement of globe position showed that 9 of the 10 globes lay in a more posterior position within the orbit on postoperative examination. CONCLUSIONS: Medial bowing of the lamina papyracea may occur as a result of FESS and may lead to relative enophthalmos in comparison. The incidence of this phenomenon is unknown because most patients are not reimaged after FESS.
Authors: Mitchell L Worley; Rodney J Schlosser; Zachary M Soler; Judy R Dubno; Mark A Eckert Journal: Laryngoscope Date: 2018-10-17 Impact factor: 3.325
Authors: Leigh J Sowerby; Matthew S Harris; Rootu Joshi; Marjorie Johnson; Tom Jenkyn; Corey C Moore Journal: J Otolaryngol Head Neck Surg Date: 2020-06-26