The expression of twist in differentiated thyroid carcinomas.

Differentiated thyroid carcinoma are lesions with a generally favorable prognosis, although there are patients with risk of recurrence and metastasis. In this study we analyzed 43 thyroid carcinomas referring to Twist expression in relation to clinicopathological parameters. The immunoreaction was identified in 79% of cases, the expression of twist being low or high, with no differences in relation to the tumors type or subtype.

The expression of CK19, vimentin and E-cadherin in differentiated thyroid carcinomas.

Thyroid carcinomas constitute lesions with an ascending incidence, for which many prognosis assessment systems were developed. This study focused on analyzing the immunoexpression of CK19, vimentin and E-cadherin in a number of 43 differentiated thyroid carcinomas, of which 39 papillary carcinomas and four follicular carcinomas, and assessed the relationship of these markers with clinico-pathological parameters of interest, such as age and gender of patients, the histological type and subtype, tumor size and extension, metastases in regional lymph nodes and tumor stage. CK19 immunostaining indicated higher scores in conventional and follicular papillary carcinomas compared with tall cell variant.