case_images: PMC11757859_01
case_images: Preoperative appearance of neoplastic growth on the zygomatic arch in male Hungarian Viszla [(A) white arrow]; Ten-months postoperative aspect of the zygomatic area (B).
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case_images: PMC11757859_01_fvets-11-1497077-g0002.jpg
case_images: F2
case_images: A 9.4-year-old male Hungarian Vizsla was referred to the Department of Surgery and Intensive Care for evaluation of a slow-growing zygomatic arch mass near the right eye, present for 2 years (see Figure 2A). At 10 months after the procedure, a clinical examination revealed no signs of tumor recurrence (Figure 2B), and the owner reported no changes in the dog's eating, drinking, or behavior.
case_images: Noncontrast axial (A) and dorsal (B) CT image demonstrating a focal, round, expansile bone cortical lesion of the right zygomatic arch.
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case_images: PMC11757859_01_fvets-11-1497077-g0003.jpg
case_images: F3
case_images: Non-contrast computed tomography (CT) revealed a focal, round, expansile bone lesion on the right zygomatic arch, measuring 2.0 x 2.3 x 1.5 cm (L, H, W) (see Figure 3).
case_images: Ossifying fibroma. Bony trabeculae (white arrows) bordered by a single layer of osteoblasts (black arrows) and embedded within abundant fibrous connective tissue (black asterisk). Within this connective tissue, numerous well-differentiated spindle-shaped fibroblasts are dispersed. H&E stain (A, B), Masson's trichrome stain (C, D). Ob. x4 (A, C) and ob. x20 (B, D). Barr 50 mum (B, D) and 200 mum (A, C).
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case_images: PMC11757859_01_fvets-11-1497077-g0004.jpg
case_images: F4
case_images: Additionally, areas of hemorrhage and cystic degeneration were observed in some cases (see Figure 4).