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

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 1993

Autores

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

Revista

Título: Virchows Archiv - A Pathological Anatomy and Histopathology

Vol. 422

Páginas: 491-497

ISSN: 0174-7398

Editora: Springer

Indexação

ISI Web of Knowledge - 63 Citações

Scopus - 79 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7