Departments of 1Breast and Endocrine Surgery, 2Histopathology; 3Radiology and 4Endocrinology, St Bartholomews Hospital, London, UK.She presented eight and half months post partum with a 10 cm midline neck lump of 4 years duration. She was asymptomatic and was on levothyroxine for Hashimotos thyroiditis.Due to the size of the PTC and the presence of Hashimotoss thyroiditis, a total thyroidectomy was performed prior to receiving radioiodine ablation therapy.The presence of PTC within TGDCs is recognised and occurs in approximately 1%. The management remains somewhat controversial with regards to thyroidectomy and radioiodine ablation. This TGDC was unusual due to its size and complexity, as well as the presence of Hashimotos thyroiditis.
