Oncology (Ichikawa, Okano, Nibe, Ono) and Radiology (Sugai), Japan Animal Referral Medical Center (Hirao), 2-5-8 Kuji, Takatsu-ku, Kawasaki-shi, 213-0032 Kanagawa, Japan; Pathology, Sanritsu-Zelkova Laboratory Center, Japan (Tsuboi).
Can Vet J. 2024 Aug;65(8):769-774.
A 10-year-old neutered male cross-bred cat was referred to our clinic for a solid mass tightly fixed to the right side of the thoracic wall from the 2nd to 4th ribs. Computed tomography revealed the mass had remarkable calcifications and arose from the 3rd costal cartilage. After removal, it was diagnosed histopathologically as a multilobular osteochondrosarcoma (MLO). For tumor resection, extremely wide surgical margins included 6 costal cartilages and 3 sternal segments were required; however, the tumor was successfully resected, followed by reconstruction of the thoracic wall using artificial materials. The cat recovered uneventfully and was good in health for ~4 y. This is apparently the first report of surgical resection of MLO from the costal cartilage of a cat. Key clinical message: To our knowledge, this is the first report of MLO from the costal cartilage in a cat, demonstrating aggressive surgical resection despite extremely wide surgical margins.
一只 10 岁已去势的雄性杂种猫因右侧第 2 至 4 肋骨处紧贴胸壁的实性肿块被转诊至我院。计算机断层扫描显示肿块有明显的钙化，起源于第 3 肋软骨。切除后，组织病理学诊断为多叶性成软骨骨肉瘤（MLO）。为了进行肿瘤切除，需要非常宽的手术切缘，包括 6 个肋软骨和 3 个胸骨段；然而，肿瘤成功切除，随后使用人工材料重建胸壁。猫恢复顺利，健康状况良好约 4 年。这显然是首例报告的从猫的肋软骨切除 MLO。主要临床信息：据我们所知，这是首例报告的来自猫的肋软骨的 MLO，尽管手术切缘非常宽，但仍表现出侵袭性的手术切除。
