ECTOPIC THYROID-TISSUE IN THE PORTA-HEPAT IS

Heterotopia of thyroid gland can be seen very seldom in humans. Most f requently ectopic thyroid tissue is found in the middle line of neck a nd chest. Ectopia of thyroid tissue caudal of the diaphragm is an exce ptionally rare finding. An explanation results out of the embryology o f the thyroid gland development. Reviewing the literature we could fin d only one case of accessory thyroid tissue in the region of the hepat ic porta, it was found at autopsy. In the present case report we descr ibe a 58-year-old woman who had an indistinct tumor in the porta hepat ica which was successfully removed. Histologic finding was that of abe rrant normal thyroid tissue.