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A 9-year-old Bullmastiff with hematemesis was determined to have primary neuroendocrine carcinoma of the gallbladder. Despite the dismal prognosis when these unusual tumors are located in the liver, the hematemesis resolved, and there was no obvious tumor regrowth in this dog 10 months after cholecystectomy.
Willard et al. (Fri,) studied this question.