ABSTRACT
Introduction: Thyroiditis may be induced by goserelin (a long acting analogue of gonadotropin – releasing hormone) prescribed for the treatment of pain and bleeding of endometriosis. Goserelin induced thyroiditis has a possibility of affecting thyroid function and hence may cause poor uptake on sodium pertechnetate Tc-99m thyroid scan.
Case presentation: This case report highlights a rare instance of a middle- aged woman with symptomatic toxic goitre whose sodium pertechnetate Tc- 99m thyroid scan uptake was inhibited by goserelin therapy.
Conclusion: Medical personnel caring for patients on goserelin need to be aware of the possibility of it affecting thyroid function.
Keywords: Goserelin, GnRH agonist, Thyroid gland, Sodium pertechnetate Tc99m, Endometriosis, Case report