ECE2017 Eposter Presentations: Thyroid Thyroid (non-cancer) (260 abstracts)
1Department of Endocrinology, King George Hospital, London, UK; 2Department of Obstetrics and Gynaecology, King George Hospital, London, UK.
A 37 year old woman was referred to the endocrinology clinic from the gynaecologists. She was awaiting an 8 cm left ovarian cyst removal and found to be hyperthyroid (fT3 7.8 pmol/l, fT4 of 19.0 pmol/l, TSH <0.01 mU/l). She described 4 months of palpitations, change in bowel habit and menstrual irregularity. She had no tremor or tachycardia. She had no palpable goitre or eye signs. She had a past medical history of asthma on inhalers. There was no family history of thyroid disease. Repeat bloods confirmed T3 toxicosis, negative TPO and TSH receptor antibodies. She was commenced on carbimazole 10 mg od. She underwent a successful left salpingo-ooperectomy. Histology showed a multiloculated cyst containing hyperplastic thyroid tissue and no evidence of malignancy. Following surgery she reported resolution of symptoms and had normalisation of thyroid function. Her carbimazole was reduced. At recent clinic review she is clinically and biochemically euthyroid off carbimazole. Struma Ovarii is a rare finding of ectopic thyroid tissue in an ovarian teratoma. This case illustrates the importance of checking thyroid function prior to gynaecological surgery and to consider rarer causes of thyrotoxicosis.