Long-term Follow-up of a Feline Solitary Osteochondroma on the Left Mandibular Ramus and Temporomandibular Joint with Surrounding Tissue Treated by Palliative Surgery

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  • 左下顎枝、顎関節およびその周囲に発生した孤立性骨軟骨腫に対し緩和的外科的切除を実施し長期的経過観察を行った猫の一例

Abstract

<p>A 5 years old, spayed domestic short-hair cat presented because of difficulty opening the mouth and loss of appetite. A firm-swelling was found on her left temporal area. The cat was FeLV negative. Surgical exploration was performed for biopsy and volume reduction. The pathological diagnosis was osteochondroma. The tumor could not be removed completely at two additional surgeries. Fifty-three months after the first surgery, remaining tumor growth decelerated, which was accompanied by the appearance of radio-transparent areas inside of the tumor. The long axis of the tumor increased about 1.3 mm during the final 59 months. The tumor remained in her left temporal area for more than 10 years; the cat continued to be able to eat normally. She died of unknown causes at 16 years of age, with no obvious metastasis and/or acute growth.</p>

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