Endocrine Abstracts

Background: Struma ovarii, defined as containing 50% or more thyroid tissue is rare and accounts for 1% of ovarian tumours. Presentation is non-specific, relating to mass effect. Although the tumour predominantly consists of thyroidal tissue, features of hyperthyroidism occur in <5% of cases. Majority are benign, histological features of thyroid cancer are found in about 5–10%. Seventy per cent of these are papillary thyroid cancer (PTC). We present a case of struma o...