Papillary thyroid cancer with translocation in the TPM3‑NTRK1 gene

The study objective – to identify specific morphological criteria characteristic of papillary thyroid cancer with translocations in the NTRK genes. Materials and methods. A retrospective analysis of 130 cases of morphologically confirmed papillary thyroid cancer from the archives of the Moscow City Oncology Hospital No 62, Moscow Healthсare Department was performed. The morphological selection criteria for the immunohistochemical study were: metastatic lesions of the lymph nodes, microcalcifications, extrathyroid spread of the tumor, the presence of a capsule / intratumorous areas of connective tissue, invasion (into the tumor capsule, blood vessels, lymphatic vessels), the presence of intranuclear pseudo-inclusions, the follicle quantity