MLH1 and thyroid gland papillary carcinoma: When MGMT, MSH2, MLH1 were evaluated in terms of 50–100% follicular cell positivity, although there was no statistically significant difference, papillary carcinoma cases showed a higher rate of follicular cell positivity, as seen in Table 2, and this difference was more pronounced between papillary carcinoma and colloidal goiter.