Tumor ósseo multilobular (Condroma rodens) em um cão
Bohrer, Ana Paula FauthSantos, Franciele Rossi DosSperhacke, Carla JeniferRasador, FrancineStreck, André FelipeJaconi, Fernanda CastellarinBastian, Natália CarolinaFrança, Raqueli Teresinha
Background: The multilobular tumor of bone, also known as chondroma rodens, is a primary tumor of bones with low frequency in dogs. It is considered a slow-growth malignant tumor, locally invasive, able to compress and invade the cerebral tissue. Its occurrence is greater in the flat bones of skull and hard palate. The clinical signs depend on the tumor location and usually are related to the compression of adjacent structures. The aim of this study is present a multilobular tumor of bone clinical case in a dog with has progressive growth on the skulls frontal part and facial deformation. Clinical, laboratory and therapeutic findings will be discussed in the report. Case: An 8-year-old male crossbred castrated dog, weighing 31 kg, presenting progressive growth in the skull was examined at the University of Caxias do Sul veterinary clinic. According to the owner, the tumor was firstly observed about 3 months ago, and the dog became prostrated since then. In the clinical examination, was noticed an enlarged, symmetric and diffuse volume in the skulls frontal part, facial deformation, especially around the ocular region, causing visual deficit. It wasnt detected any other systemic alterations. The radiography of the skull revealed a soft tissue increased volume, suggesting a mass or an encapsulated abscess. Serum biochemistry demonstrated an increase of alcaline phosphatase activity. The other hematological and biochemical parameters were within normal limits. Fine needle aspiration was performed, showing compatible result with bone neoplasm. It was chosen to make a surgical resection, starting with a cross-shaped incision on medial portion of the skull, followed by a skin disclosure to expose the tumor. With the assistance of an orthopedical chisel and metzembaum scissors, the mass was removed. The tumor presented steady and sanded aspect, reddish colored with whitish areas...(AU)
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