Surgical Treatment of Pulmonary Melanophoroma in a Beaded Lizard (heloderma Horridum Exasperatum).


An adult male Rio Fuerte beaded lizard (Heloderma horridum exasperatum) was examined because of a history of anorexia and lethargy of one week duration. Diagnostic tests included a physical exam, complete blood cell count, plasma biochemistries, whole-body radiographs, and ultrasonography. The physical exam revealed the presence of a large mass in the midcoelomic cavity. Radiographs confirmed the presence of the midcoelomic mass and showed a smaller mass in the right cranial lung field. The ultrasonogram showed a homogeneous mass with soft tissue echogenicity. A fine-needle aspirate was collected, and the cytology results were suggestive of a melanophoroma. Exploratory surgery revealed a large mass (10×6 cm) within the right lung, with extensive adhesions to the caudolateral margin of the right liver lobe. The smaller mass (2×3 cm) was within the cranial aspect of the right lung. A right pulmonectomy and partial hepatectomy were performed to remove the tumors. The animal died 3.5-yr postsurgery, and histopathologic evaluation did not show evidence of melanophoroma in any of the tissues evaluated.

DOI: 10.1638/2014-0188R2.1

Cite this paper

@article{Rivera2015SurgicalTO, title={Surgical Treatment of Pulmonary Melanophoroma in a Beaded Lizard (heloderma Horridum Exasperatum).}, author={Sam Rivera and Maria M Crane and Rita McManamon and Christopher R. Gregory}, journal={Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians}, year={2015}, volume={46 2}, pages={397-9} }