Fibroblastic osteosarcoma in a guinea pig (Cavia porcellus)

Braz J Vet Pathol. March 2023;16(1):46-50. 33 Refs

Joerg Richard Vetter¹, Leila Gertrudis Maidana, Roger Gonzalez-Vatteone, César Esteban Brítez-Valinotti, Raquel Ramírez-Diarte

¹ Departamento de Recursos Faunísticos y Medio Natural, Facultad de Ciencias Veterinarias, Universidad Nacional de Asunción, PO BOX 1061, San Lorenzo 2160, Paraguay. jvetter@vet.una.py

Author Abstract

The article describes the case of a 3 year 6 months old Guinea Pig (Cavia porcellus) that was assisted at the Wildlife and Exotic Animal Practice of the Faculty of Veterinary Sciences, National University of Asunción. The patient presented a hard mass in the right hind limb extending from the proximal portion of the femur, projecting caudally to the proximal tuberosity of the calcaneus, with an increase in temperature, and a marked increase in sensitivity. Radiographic diagnosis refers to a mass with amorphous areas of mineral density. Fine needle aspiration puncture revealed an undifferentiated malignant proliferative process, requiring histopathological analysis to characterize the process. Disarticulation was performed and subsequent histopathologic diagnosis under hematoxylin-eosin and Masson’s trichrome stain revealed fibroblastic osteosarcoma.

Keywords

Cavia porcellus, neoplasm, bone, Paraguay

Article Tools:

Email to me

Archives Highlights:

Acute onset of circling and dull mentation in a 1-year-old male neutered domestic shorthair cat.
CNS cuterebriasis represents a neurologic disease more common in cats than dogs, resulting in presentation during summer months with acute onset and often asymmetric, focal or multifocal, intracranial signs preceded by upper respiratory disease.

Key Takeaways for Veterinarians from the NAVTA Demographics Survey
Low salary is still viewed as the most challenging aspect of the job, with 39% of respondents ranking this both the top challenge currently and the top projected issue for the next 5 years. One in 3 credentialed veterinary technicians maintains a second job, often full time, suggesting that they need additional income to support themselves and/or their families.

Spotting the Pattern: A Review on White Coat Color in the Domestic Horse.
only two genetic markers are used to determine a horse's base coat color, whereas over 50 genetic variations have been discovered to cause white patterning in horses. Some of these white-causing mutations are benign and beautiful, while others have a notable impact on horse health. In this review, we explore, in detail, the etiology of white spotting and its overall effect on the domestic horse to Spot the Pattern of these beautiful (and sometimes dangerous) white mutations.

Guide to advances in the control of gastrointestinal roundworms in sheep
Sustainable control of GINs requires the application of multistranded strategies, which includes breeding resistant/resilient sheep, avoidance of high-challenge pasture, improving immunity through use of vaccines and improved nutrition, and use of anthelmintics in such a way as to delay the development of anthelmintic resistance.

Retrospective Study of the Prevalence, Histopathology, Therapy, and Survival Time of Neoplastic Disease in Fish.
The species with the highest neoplasia prevalence was koi (18.5%), followed by goldfish (10.8%). The eye was the most commonly reported site for a primary neoplasm (8.4%), and the most prevalent diagnosis across all organ systems was soft tissue sarcoma (26.2%). Only 13 patients in this study (2.9%) received any form of treatment, with a mean survival time of 8.85 months post-treatment.