Choudhary Maria M, Zhang Kevin R, Johnson Scott, Hwang Catherine J, Chon Brian H, Perry Julian D
Cole Eye Institute, Cleveland Clinic Foundation.
Case Western Reserve School of Medicine, Case Western Reserve University School of Medicine.
Ophthalmic Plast Reconstr Surg. 2020 Mar/Apr;36(2):194-197. doi: 10.1097/IOP.0000000000001511.
To determine whether thyroid eye disease (TED) is associated with a change in temporal fossa soft tissue volume.
CT imaging studies were selected from patients with TED considering orbital decompression surgery and from an age-matched group of controls presenting to the Emergency Department for nontraumatic conditions requiring CT imaging. Measurements of the temporal fossa fat pad and soft tissue thickness were used as a proxy for volume and were performed using the zygomaticotemporal suture as a reference point. Categorical variables were described using frequencies and percentages, while continuous variables were described using medians and standard deviations. Chi-square tests were used to assess the relationship between gender and age group, while t-tests were used to examine the relationship between continuous variables and age group.
A total of 56 CT scans were evaluated, including scans from 28 patients with TED and 28 controls. The following measurements were found to be significantly larger in the TED population: left fat pad measured 5 mm above the zygomaticotemporal suture (p = 0.012), right fat pad measured 15 mm above the suture (p = 0.005), right soft tissue measured 15 mm above the suture (p = 0.026), left fat pad measured 15 mm above the suture (p = 0.006), and the left soft tissue measure 15 mm above the suture (p = 0.032).
Thyroid eye disease is associated with an increase in temporal fossa fat pad and soft tissue volume. These findings suggest that TED disease may produce pan-facial changes rather than changes confined to the peri-orbital region.
