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OJVRTM

 Online Journal of Veterinary Research©

Volume 18(3): 231-237, 2014. Redacted 2017.


Glomus tumor in a Syrian hamster

 

Baharak Akhtardanesh*1, Reza kheirandish2, Elahe Moeini3

 

1Department(s) of Clinical Sciences, 2Pathobiology, 3Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran.

 

ABSTRACT

 

Akhtardanesh B, Kheirandish R, Moeini E., Glomus tumor in a Syrian hamster, Onl J Vet Res., 18(3): 231-237, 2014. An 18 month old female Syrian hamster was referred with a history of chronic weight loss due to dysphagia and progressive swelling in the right submandibular region.  A single 4 cm×2.5 cm×2.0 cm mass was found in the subcutis adjacent to the right mandible. Fine needle aspiration cytology revealed a viscous bloody fluid with round and oval neoplastic cells, and erythrocytes. On necropsy the excised mass was encapsulated and attached to alveolar bone. The cut surface was solid, pink and contained multiple red areas of hemorrhage. The mass was fixed in 10% formalin, routinely processed and serial sections were prepared for haematoxylin and eosin staining and Avidin-Biotin Complex (ABC) test. Microscopically the neoplasm was composed of sheets and cords of round to ovoid cells, interspersed with dilated venous vessels. Vascular spaces with surrounding neoplastic cells were separated by loose collagenous stroma. Tumor cells had round-to-ovoid nuclei with small or indistinct nucleoli and eosinophilic cytoplasm with indistinct cell borders. The nuclei appeared highly atypical and with immunohistochemistry assay the cells were negative for cytokeratine and positive for vimentine and Smooth Muscle Actin (SMA). According to the histopathological and immunohistochemistry findings and since no distant metastasis was found; the present case was diagnosed as benign glomus tumor.

 

Key words: Glomus tumor, Golden hamster, Histopathology.


 

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