Vajtai, Istvan; Beck, Jürgen; Kappeler, Andreas; Hewer, Ekkehard (2011). Spindle cell oncocytoma of the pituitary gland with follicle-like component: organotypic differentiation to support its origin from folliculo-stellate cells. Acta neuropathologica, 122(2), pp. 253-8. Berlin: Springer-Verlag 10.1007/s00401-011-0835-x
|
Text
401_2011_Article_835.pdf - Published Version Available under License Publisher holds Copyright. Download (607kB) | Preview |
Spindle cell oncocytoma (SCO) is a rare, non-adenomatous tumor originating from the anterior pituitary gland. Composed of fusiform, mitochondrion-rich cells sharing several immunophenotypic and ultrastructural properties with folliculo-stellate cells (FSC), SCO has been proposed to represent a neoplastic counterpart of the latter. To date, however, SCO has failed to meet one criterion commonly used in histological-based taxonomy and diagnostics; that of recapitulating any of FSCs' morphologically defined developmental or physiological states. We describe a unique example of SCO wherein a conventional fascicular texture was seen coexisting with and organically merging into follicle-like arrangements. The sellar tumor of 2.7 × 2.6 × 2.5 cm was transphenoidally resected from a 55-year old female. Preoperative magnetic resonance imaging indicated an isointense, contrast enhancing mass with suprasellar extension. Histology showed multiple rudimentary to well-formed, follicle-like cavities on a classical spindle cell background; while all the participating cells exhibited an SCO immunophenotype, including positivity for S100 protein, vimentin, EMA, Bcl-2, and TTF-1, as well as staining with the antimitochondrial antibody 113-1. Conversely no expression of GFAP, follicular-epithelial cytokeratin, carcinoembryonic antigen, or anterior pituitary hormones was detected. Ultrastructurally, tumor cells facing follicular lumina displayed organelles of epithelial specialization, in particular surface microvilli and apical tight junctions. This constellation is felt to be reminiscent of FSCs' metaplastic transition to follicular epithelium, as observed during embryonic development and physiological renewal of the hormone-secreting parenchyma. Such finding is apt to being read as a supporting argument for SCO's descent from the FSC lineage.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Service Sector > Institute of Pathology 04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurosurgery 04 Faculty of Medicine > Service Sector > Institute of Pathology > Clinical Pathology |
UniBE Contributor: |
Vajtai, Istvan, Beck, Jürgen, Kappeler, Andreas, Hewer, Ekkehard Walter |
ISSN: |
0001-6322 |
Publisher: |
Springer-Verlag |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:18 |
Last Modified: |
02 Mar 2023 23:20 |
Publisher DOI: |
10.1007/s00401-011-0835-x |
PubMed ID: |
21590491 |
Web of Science ID: |
000292780500011 |
BORIS DOI: |
10.7892/boris.5486 |
URI: |
https://boris.unibe.ch/id/eprint/5486 (FactScience: 210233) |
Actions (login required)
 |
Edit item |