Clinique Vétérinaire SeineVet, Surgical department, Boos, France.
Top Companion Anim Med. 2023 Mar-Jun;53-54:100776. doi: 10.1016/j.tcam.2023.100776. Epub 2023 Mar 28.
A 7-year-old castrated male domestic shorthair cat presented with locked jaw syndrome and firm swelling in the right temporal region of the skull. A computed tomography (CT) scan showed a heavily calcified mass of the right coronoid process of the mandible with a popcorn appearance, consistent with a multilobular osteochondrosarcoma. The zygomatic arch was displaced laterally and ventrally due to the mass effect. The temporomandibular joint was not involved. Surgical treatment was performed and consisted of the removal of the zygomatic arch and the vertical ramus of the mandible. It was possible to open the mouth normally immediately after surgery. Recovery was uneventful. Histological examination of the mass confirmed multilobular osteochondrosarcoma. This type of tumor is rarely encountered in dogs, and a literature search reveals only 2 cases in cats: 1 arising from the skull and 1 from thoracic wall. This case report documents the first description of a multilobular osteochondrosarcoma of the mandible in a cat.
一只 7 岁去势雄性家短毛猫出现下颌骨锁定综合征和右颞部颅骨的坚硬肿胀。计算机断层扫描 (CT) 显示下颌骨冠状突有大量钙化的肿块，呈爆米花状，符合多叶性成软骨骨肉瘤。由于肿块的影响，颧骨向外侧和向下方移位。颞下颌关节未受累。进行了手术治疗，包括切除颧骨和下颌骨垂直支。术后可立即正常张口。恢复顺利。肿块的组织学检查证实为多叶性成软骨骨肉瘤。这种类型的肿瘤在狗中很少见，文献检索仅显示猫有 2 例：1 例发生在颅骨，1 例发生在胸壁。本病例报告首次描述了猫下颌骨多叶性成软骨骨肉瘤。
