Wallace Mandy, Selmic Laura, Withrow Stephen J
Animal Cancer Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
J Am Anim Hosp Assoc. 2013 Jul-Aug;49(4):243-5. doi: 10.5326/JAAHA-MS-5862. Epub 2013 May 20.
The rate of soft tissue metastases and the importance of abdominal ultrasonography in initial staging of canine skeletal osteosarcoma (OSA) are not known. The purpose of this study was to determine whether abdominal ultrasonography should be performed routinely at initial diagnosis of skeletal OSA or if certain abnormal physical examination or diagnostic findings would provide greater indication to perform ultrasonography. Eighty dogs with OSA that had an abdominal ultrasonogram performed at diagnosis were included. Abnormal findings were present in 36 of 80 dogs. Twenty-three abnormalities were evaluated with either fine-needle aspirate or biopsy and 19 were benign. None of the ultrasonograms revealed abdominal OSA metastases; however, 4 of the 80 ultrasonograms (5%) revealed another primary neoplasia. Further, 2 of the 9 cases that received an ultrasonogram due to a palpable abdominal mass were diagnosed with another primary neoplasia compared with only 1 of the 49 cases that received an ultrasonogram for routine staging. Abdominal ultrasonography as a part of staging is unlikely to reveal metastases from OSA and may not be a useful routine staging tool; however, in certain populations of dogs, such as those with palpable abdominal masses, abdominal ultrasonography may reveal abnormalities that may influence treatment decisions.
犬骨肉瘤（OSA）软组织转移的发生率以及腹部超声检查在其初始分期中的重要性尚不清楚。本研究的目的是确定在骨骼OSA的初始诊断时是否应常规进行腹部超声检查，或者某些异常的体格检查或诊断结果是否能为进行超声检查提供更强的指征。纳入了80只在诊断时进行了腹部超声检查的OSA犬。80只犬中有36只存在异常发现。对23处异常进行了细针穿刺抽吸或活检评估，其中19处为良性。没有超声检查显示腹部OSA转移；然而，80份超声检查报告中有4份（5%）显示了另一种原发性肿瘤。此外，因可触及腹部肿块而接受超声检查的9例病例中有2例被诊断为另一种原发性肿瘤，而因常规分期接受超声检查的49例病例中只有1例。腹部超声检查作为分期的一部分不太可能发现OSA转移，可能不是一个有用地常规分期工具；然而，在某些犬群中，如那些可触及腹部肿块的犬，腹部超声检查可能会发现可能影响治疗决策的异常情况。
