Eich ML, Jeske W, Zenz U, Chiapponi C, Alidousty C, Merkelbach-Bruse S, Büttner R, Schultheis AM. TERT RNAscope analysis of sub-centimetric papillary thyroid carcinomas and synchronous lymph node metastases.
Thyroid Res 2024;
17:8. [PMID:
38616265 PMCID:
PMC11017548 DOI:
10.1186/s13044-024-00195-7]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/12/2024] [Indexed: 04/16/2024] Open
Abstract
BACKGROUND
Sub-centrimetric papillary thyroid carcinomas usually have a good prognosis with a cancer specific survival of > 99%, however in up to 65% of patients, lymph node metastases can be observed. Molecular alterations in BRAF, TERT and TP53 are associated with worse clinicopathological outcome in patients with papillary thyroid carcinoma.
MATERIAL AND METHODS
Twenty-two cases of papillary thyroid carcinomas measuring ≤ 1 cm with synchronous lymph node metastases were examined regarding morphological patterns and immunohistochemical status of p53, Ki-67, and BRAF V600E status. TERT RNA expression in lymph node metastases were evaluated by RNAScope®.
RESULTS
Morphological patterns were heterogeneous in both primary tumors and lymph node metastases. Proliferation indices measured by Ki-67 were low. Both primary and lymph node metastases were wild type for p53 by immunohistochemical analysis. No lymph node metastasis showed TERT expression by RNAScope®.
CONCLUSIONS
Our data indicate that TERT expression is not involved in the development early lymph node metastasis in patients with sub-centimetric PTC.
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