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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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