NAVLE（北美执业兽医考题）Day 702

A 13-year old spayed female Miniature Poodle presents with two mobile, soft, well-circumscribed, subcutaneous sternal masses, 3 cm and 6 cm in diameter, respectively. The owner had noticed one mass three months previously. Fine needle aspiration of both masses is performed and smears are prepared. A representative field of both specimens is illustrated below (Wright's 20X). What is your diagnosis?
一只13岁已绝育的雌性迷你贵宾犬由于胸前的2个直径大约3cm和6cm，柔软，圆形，被膜完整，可移动的皮下肿块前来就诊。主人3个月前发现了其中一个肿块。两个肿块FNA后镜检。有代表性的视野如下图所示。你的诊断是什么？