December 1999	* Total thyroidectomy
January 2019	Hepatic lesion incidentally discovered at abdominal ultrasound located in close connection with the posterior wall of the gallbladder and with the hepaticum hilum, likely in the duodenal area. CT scan confirmed an extensive tissue portion with irregular margins, with a diameter on the axial plane of about 8 × 5.5 cm and a cranio-caudal extension of about 6 cm, incorporating the common hepatic duct and imprinting the choledochal duct in the pre-pancreatic site, the gallbladder, and the cystic duct, which could not be dissociated from the contiguous hepatic parenchyma and was in very close proximity to the second duodenal portion and the head of the pancreas.
February 2019	Fine-needle biopsy of the abdominal lesion with a cytological report comprising fragments of thyroid tissue, consisting of colloid follicles, whose cells were positive for immunohistochemical staining for TTF1, PAX8, and CK7, focally positive for CK19 and negative for synaptophysin and HepPar 1. Ki67 showed a proliferative index <1%. Thyroid scintigraphy showed the presence of an area of intense accumulation of radioiodine in the upper right quadrant of the abdomen, compatible with ectopic thyroid tissue. MRI scan confirmed the presence of a polylobulated solid mass, with some areas with fluid signal intensity and calcifications in the context, with non-homogeneous post-contrast enhancement, hypointense in the hepatobiliary phase, with a maximum axial size of approximately 7.8 × 4.8 cm located in the gallbladder bed and the hepaticum hilum.
March 2019-Now	Clinical and imaging follow-up