Abstract
Heterobilharzia americanais a trematode of the Schistosomatidae family that infects dogs, raccoons, and other mammals as definitive hosts. This parasite is considered endemic in the southern Atlantic and Gulf coasts; however, only a few cases are reported. A 7-year-old dog from Louisiana was referred for persistent hypercalcemia, hyperglobulinemia, and weight loss. Abdominal ultrasound revealed diffuse hyperechogenicity of the liver with several hyperechoic nodules of varying size. Cytologic examination of fine-needle aspirates of the liver revealed few ovoid to round basophilic thin-walled eggshell fragments and rare ciliated miracidia.H. americanaeggs were identified on fecal sedimentation.
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