SEMINOMA IN DANCING, BROWN, EURASIAN BEAR (URSUS ARCTOS)

• Main Author: Popov, Georgi St.
• Format: Text
• Language: English
• Published: Zenodo 2021
• Subjects: neoplasia,; testis,; bear,; seminoma,; histopathology.; Sullivan; Bryant; Raleigh; Manov; Ursus arctos
• Online Access: https://dx.doi.org/10.5281/zenodo.4621632; https://zenodo.org/record/4621632

In the present research, a pathomorphological study of testicular tumor formation in a dancing, Eurasian, brown bear was performed. There was a significant enlargement of the right testis, which had a pale pink, rough and slightly prominent cut surface with multiple necrotic-degenerative areas and hemorrhages. Microscopic examination revealed a diffuse tumor formation composed mainly of densely arranged, oval neoplastic cells with round nuclei and a small amount of cytoplasm. Notable lymphocyte accumulations were observed around some of the blood vessels. Based on the established morphological finding, the tumor was diagnosed as unilateral, diffuse seminoma. : {"references": ["Bush, J. M., D. W. Gardiner, S. J. Palmer, E. Rajpert-De Meyts, D. N. R. Veeramachaneni. (2011). Testicular germ cell tumours in dogs are predominantly of spermatocytic seminoma type and are frequently associated with somatic cell tumours. International journal of andrology, 34(4\u20132), 288\u2013295.", "Estep, J. S., R. E. Baumgartner, F. Townsend, D. A. Pabst, W. A. Mclellan, A. Friedlaender, T. P. Lipscomb. (2005). Malignant seminoma with metastasis, Sertoli cell tumor, and pheochromocytoma in a spotted dolphin (Stenella frontalis) and malignant seminoma with metastasis in a bottlenose dolphin (Tursiops truncatus). Veterinary pathology, 42(3), 357\u2013359.", "Naves J., A. Ferna\u00b4 Ndez-Gil, C. Rodri\u00b4Guez, M. Delibes. (2006). Brown bear food habits at the border of its range: a long-term study. Journal of Mammalogy, 87(5), 899\u2013908;", "Manov, V. (2019). Morphological characteristics of some neoplasias in animals. Panev Publishing, Sofia, 103\u2013106", "Maxie, G., J. Kennedy, N. Palmer. (2015). Pathology of Domestic Animals. Elsevier Health Sci-ences, Guelph, 6(3), 493\u2013497", "Meuten, D. J. (2016). Tumors in domestic animals. John Wiley & Sons. Raleigh, 5, 706\u2013714.", "Sirri, R., L. Mandrioli, V. Grieco, B. Bacci, B. Brunetti, G. Sarli, H. Schmidt-Posthaus. (2010). Seminoma in a koi carp Cyprinus carpio: histopathological and immunohistochemical findings. Dis-eases of aquatic organisms, 92, 83\u201388.", "Sullivan, P. J., & Fasina, O. O. (2018). Bilateral malignant seminoma with ventricular metastasis in a bald eagle (Haliaeetus leucocephalus). Journal of avian medicine and surgery, 32(3), 240\u2013246.", "Portas T. J., T. B. Hildebrandt, B. R. Bryant, F. G\u00f6ritzb, R. Hermesb. (2010). Seminoma in a south-ern black rhinoceros (Diceros bicornis minor): diagnosis, surgical management and effect on fer-tility. Australian Veterinary Journal, 88 (1\u20132), 57\u201360.", "Zachary J. F. (2017). Pathologic basis of veterinary disease. Elsevier Health Sciences, Urbana, 6, 1210\u20131212."]}