PMID- 28539287 OWN - NLM STAT- MEDLINE DCOM- 20181119 LR - 20200612 IS - 1673-4254 (Print) IS - 2663-0842 (Electronic) IS - 1673-4254 (Linking) VI - 37 IP - 5 DP - 2017 May 20 TI - [Calculation of orbital fat volumes for determining treatment timing for thyroid- associated ophthalmopathy]. PG - 640-645 AB - OBJECTIVE: To analyze the relationship between orbital fat volume and the progression and prognosis of thyroid- associated ophthalmopathy (TAO) and determine the optimal treatment timing for TAO. METHODS: The clinical data were collected from 35 patients (70 orbits) with a definite diagnosis of TAO between January, 2016 and December, 2016. The correlation between orbital fat volume and the clinical parameters was evaluated. We also analyzed the correlation of the signal intensity ratio (SIR) of the extraocular muscles with the clinical parameters. The orbital fat volume was compared between patients with TAO and 12 control subjects. RESULTS: The orbital fat volume was significantly correlated with the duration of TAO (r=0.480, P<0.01), but showed no significant difference between patients with a disease course within 6 months and those with a disease course of 6 to 12 months (P=0.084). The patients with a disease course beyond 12 months had a significantly greater orbital fat volume than those with a disease course of 6 months (P<0.01) or 6 to 12 months (P<0.05). The orbital fat volume was correlated with the degree of proptosis (r=0.622, P<0.01), and an increase of exophthalmos by 1 mm was associated with a total orbital volume increment of 0.88 mL. The clinical activity score was correlated with the SIR of the extraorbital muscles (r=0.536, P<0.01) and levels of anti-thyroid-stimulating hormone receptor antibody (r=0.416,P<0.01). The orbital fat volume was significantly greater in TAO patients than in the healthy individuals (P<0.01). CONCLUSION: In patients with TAO, the peak increase of orbital fat volume occurs one year after the disease onset. Measurement of the orbital fat volume combined with SIR of the extraorbital muscles can serve as an indicator for determining the optimal timing for intervention of TAO and helps in the evaluation of prognosis of the patients. FAU - Jiang, Wei AU - Jiang W AD - Department of Endocrinology, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China.E-mail: 527705916@qq.com. FAU - Cai, Qiu-Yue AU - Cai QY FAU - Li, Zhang-Fang AU - Li ZF FAU - Chen, Zhi-Yi AU - Chen ZY FAU - Luo, Yao-Sheng AU - Luo YS FAU - Hu, Shi-di AU - Hu SD FAU - Shen, Jie AU - Shen J LA - chi PT - Journal Article PL - China TA - Nan Fang Yi Ke Da Xue Xue Bao JT - Nan fang yi ke da xue xue bao = Journal of Southern Medical University JID - 101266132 SB - IM MH - Adipose Tissue/*anatomy & histology MH - Exophthalmos MH - Eye MH - Graves Ophthalmopathy/*therapy MH - Humans MH - Orbit/*anatomy & histology PMC - PMC6780468 EDAT- 2017/05/26 06:00 MHDA- 2018/11/20 06:00 PMCR- 2017/05/20 CRDT- 2017/05/26 06:00 PHST- 2017/05/26 06:00 [entrez] PHST- 2017/05/26 06:00 [pubmed] PHST- 2018/11/20 06:00 [medline] PHST- 2017/05/20 00:00 [pmc-release] AID - nfykdxxb-37-5-640 [pii] AID - 10.3969/j.issn.1673-4254.2017.05.12 [doi] PST - ppublish SO - Nan Fang Yi Ke Da Xue Xue Bao. 2017 May 20;37(5):640-645. doi: 10.3969/j.issn.1673-4254.2017.05.12.