SOLITARY FIBROUS TUMOR OF THE THYROID - CLINICOPATHOLOGICAL, IMMUNOHISTOCHEMICAL AND ULTRASTRUCTURAL-STUDY OF 3 CASES

• Type: Another Publication in an International Scientific Journal
• Date: 1993

Authors

TACCAGNI, GL (Author) Other; SAMBADE, C (Author) Other; NESLAND, J (Author) Other; TERRENI, MR (Author) Other; Sobrinho Simoes, M (Author) FMUP

Journal

Title: Virchows Archiv - A Pathological Anatomy and Histopathology

Vol. 422

Pages: 491-497

ISSN: 0174-7398

Publisher: Springer

Indexing

ISI Web of Knowledge - 63 Citations

Scopus - 79 Citations

Other information

Authenticus ID: P-001-N1J

DOI: 10.1007/bf01606459

Abstract (EN): We describe three cases of solitary fibrous tumour (SFT) arising from thyroid stroma. Grossly, the tumours were clearly delimited but only partly encapsulated. The following histomorphological growth patterns were observed: bundles of cells in storiform configuration; non-structured bundles; prevalence of fibrous matrix; highly cellular, non-structured; prevalence of loose, non-structured extracellular substance; cellular proliferation and vascular spaces in a haemangiopericytic configuration and a lipomatous component. Immunohistochemical investigation demonstrated intense, diffuse vimentin positivity and focal, less intense actin positivity in all three cases. At electron microscopy we observed a primitive cell of mesenchymal type, with cytoplasm poor in organelles and rich in filaments; this cell sometimes presented differentiation characteristics. SFT is at present the most correct term for the lesions presented here despite some morphological characteristics which differ from cases reported in the literature.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7