Gastric carcinoids were observed in three adult female bearded dragons (Pogona vitticeps). Macroscopically, large and transmural tumors were seen in the stomach of all cases, and Case 3 had hepatic metastasis. Microscopically, in all cases, infiltrative tumor cells proliferated without capsulation and formed nests and ribbon-like rows of cells. Pseudorosette formation was observed in Case 2. Some tumor cells were poorly adhesive, having scant cytoplasm and small round pyknotic nuclei. The other

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... tumor cells had large, spindle shaped and bright nuclei. Immunohistochemically, the tumor cells were positive for chromogranin A and synaptophysin in all cases. Only Case 1 expressed cytokeratin. In electron microscopy, neuroendocrine granules averaging 220 nm in diameter were seen in the cytoplasm of the tumor cells in Case 3.