Histologic classification of Dog 4’s tumor was not consistent for cHSA (CD31 immunonegativity; Fig 7), but the identification of faint PSMA amplicons for Dog 4, coincide with tumoral immunohistochemical reactivity for vimentin, neuron-specific enolase, and PSMA (Fig 7), suggestive of an atypical hepatic carcinoid tumor. Here, PECAM1 is linked to neoplasm.