The paper analyzes the data available in the literature on the morphological and prognostic features of relatively rare high-grade thyroid cancer. It shows the difficulties and unsolved problems of morphological diagnosis and the possibilities of current methods for immunohistochemical and molecular genetic studies to determine the malignant potential of the tumor and prognosis.
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Virchows Arch
January 2025
Department of Oncology, University of Turin, Orbassano, Turin, Italy.
In non-papillary follicular cell-derived thyroid carcinomas, prognostic factors are scarce. Intratumoral fibrosis was identified as an adverse factor in papillary and medullary carcinomas, but it has not been investigated in other subtypes. We aimed at exploring the presence of intratumoral fibrosclerosis in a cohort of 132 non-papillary follicular cell-derived thyroid carcinomas (53 follicular and 31 oncocytic carcinomas, including 10 high grade differentiated thyroid carcinomas and 48 poorly differentiated carcinomas) and correlating its presence and extent with clinical and pathological features and survival.
View Article and Find Full Text PDFClin Nucl Med
January 2025
From the Institut Curie, Department of Nuclear Medicine, Saint-Cloud.
A 64-year-old woman underwent initial 18F-FDG PET/CT staging for a suspicious endometrial mass, which showed high uptake in the endometrial mass and a focal uptake in a known left thyroid nodule. Histology revealed a high-grade large cell neuroendocrine carcinoma of the endometrium with FIGO (International Federation of Gynecology and Obstetrics) stage Ib. Further explorations revealed a synchronous thyroid metastasis.
View Article and Find Full Text PDFPathol Res Pract
December 2024
Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; Precision Pathology of Neoplasia Research Group, Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand. Electronic address:
Background And Aims: Follicular-patterned thyroid tumors (FPTTs) are frequently encountered in thyroid pathology, encompassing follicular adenoma (FA), follicular thyroid carcinoma (FTC), noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP), and follicular variant of papillary thyroid carcinoma (fvPTC). Recently, a distinct entity termed differentiated high-grade thyroid carcinoma has been described by the 5th edition of the WHO classification of the thyroid tumors, categorized as either high-grade fvPTC, high-grade FTC or high-grade oncocytic carcinoma of the thyroid (OCA). Accurate differentiation among these lesions, particular between the benign (FA), borderline (NIFTP) and malignant neoplasms (FTC and fvPTC), remains a challenge in both histopathological and cytological diagnoses.
View Article and Find Full Text PDFThyroid
January 2025
Head and Neck Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
The 2022 World Health Organization classification introduced the term high-grade follicular cell-derived nonanaplastic thyroid carcinoma (HGFCTC) to define invasive/infiltrative nonanaplastic thyroid carcinoma with high-grade features, including poorly differentiated thyroid carcinoma and high-grade differentiated thyroid carcinoma. Our objectives were to compare clinicopathological characteristics, oncologic outcomes, and mutation profiles among HGFCTC subgroups to better inform prognostication and treatment. In this single-center, retrospective cohort study of 252 patients who had surgery for HGFCTC from 1986 to 2020, we categorized HGFCTC and its related entity, "encapsulated noninvasive neoplasms of follicular cells with high-grade features," into five subgroups: (A) encapsulated noninvasive, (B) encapsulated with capsular invasion only (minimally invasive), (C) encapsulated angioinvasive with focal vascular invasion (VI), (D) encapsulated angioinvasive with extensive VI, and (E) infiltrative tumors.
View Article and Find Full Text PDFCommun Biol
December 2024
Department of Infectious Diseases, Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China.
Acute liver failure (ALF) is a life-threatening clinical syndrome characterized by high-grade inflammation and multi-organ failure. Our previous study shows that targeting the M2 isoform of pyruvate kinase (PKM2) to inhibit macrophage inflammation may be a promising strategy for ALF treatment. however, the mechanism by which PKM2 regulates the inflammatory response is unclear.
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