During the necropsy of an eight-year-old mixed breed dog from the Southern United States, reactive granulomas in the esophagus containing bright red worms, 40 mm to 70 mm long are found. Which choice is the most likely diagnosis? 在为一只8岁的来自美国南部的混种犬进行尸检时，在其食道的反应性肉芽肿内发现了长约40mm-70mm的亮红色蠕虫。以下哪项是最可能的诊断？