Potentilas of preoperative diagnostics of unpalpated thyroid cancer

The analysis of data obtained showed that unpalpated thyroid tumors were revealed accidentally during ultrasound examination. Microcarcinoma was characterized by hypoechogenic structure and the capsule absence. No specific signs for any morphological structures were found. Ultrasound-guided fine-needle aspiration biopsy allowed thyroid tumors less than 1,0 cm in diameter to be verified. Papillary thyroid cancer was observed more frequently. Sensitivity and accuracy of the cytological method were 84,3 % and 83,8 %, respectively depending no on the tumor size.