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Late reactivation of thyroid orbitopathy
Dinesh Selva1, Celia Chen, Georgina King
1Oculoplastic and Orbital Unit, Department of Ophthalmology, Royal Adelaide Hospital, Adelaide University, Adelaide, South Australia, Australia. raheyes@mail.rah.sa.gov.au
Clinical & Experimental Ophthalmology
|January 30, 2004
Summary
Late reactivation of thyroid orbitopathy is uncommon, occurring in 5% of cases. This reactivation can happen years after initial disease, often presenting as muscle issues in euthyroid patients.
Area of Science:
- Ophthalmology
- Endocrinology
- Autoimmune Diseases
Background:
- Thyroid orbitopathy (TO) typically has a self-limited active phase of 18-36 months.
- Late reactivation of TO after 5+ years of quiescence is poorly documented.
- Understanding late TO reactivation is crucial for patient management.
Purpose of the Study:
- To determine the incidence of late reactivation in thyroid orbitopathy.
- To characterize the clinical presentation and course of late TO reactivation.
Main Methods:
- Retrospective case review of patients with thyroid orbitopathy.
- Data collected from Royal Adelaide Hospital Orbital Clinic (1996-2001).
Main Results:
- Eight cases (5%) of late reactivation identified from 193 TO patients.
- Average interval to reactivation was 12 years; patients were euthyroid.
- Proptosis and diplopia were common; myopathy reactivation was noted.
Conclusions:
- Late reactivation of thyroid orbitopathy is an infrequent event.
- Reactivation can occur in euthyroid patients without clear triggers.
- Myopathy is a frequent presentation of late TO reactivation.