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A collision tumor consisting of granular cell tumor and adenocarcinoma in the uterus of an aged djungarian hamster.
- Source :
-
Journal of toxicologic pathology [J Toxicol Pathol] 2011 Dec; Vol. 24 (4), pp. 233-7. Date of Electronic Publication: 2012 Jan 07. - Publication Year :
- 2011
-
Abstract
- A neoplastic nodular lesion consisting of an admixture of granular cell tumor and adenocarcinoma was found in the uterus of a 26-month-old Djungarian hamster. Neoplastic cells of the uterine adenocarcinoma showed an epithelial nature in their growth patterns and by cytokeratin-immunopositive reaction, exhibiting nuclear pleomorphism. The granular cells had an abundant amount of fine granular eosinophilic cytoplasm and eccentric or central nuclei with no nuclear atypia; the granular structures were positive for periodic acid-Schiff with diastase resistance and were confirmed as lysosomes/autophagosomes by electron microscopy; immunohistochemically, the cells reacted to desmin, vimentin and α-smooth muscle actin and negatively for neurogenic, histiocyte/macrophage or epithelial markers, indicating smooth muscle origin. Because these tumors were generated from different cell origins, a diagnosis of collision tumor was made.
Details
- Language :
- English
- ISSN :
- 1881-915X
- Volume :
- 24
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of toxicologic pathology
- Publication Type :
- Academic Journal
- Accession number :
- 22319236
- Full Text :
- https://doi.org/10.1293/tox.24.233