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Burns, R. E., Bicknese, E. J., Westropp, J. L., Shiraki, R., & Stalis, I. H. (2013). Tumoral calcinosis form of hydroxyapatite deposition disease in related red-bellied short-necked turtles, emydura subglobosa. Veterinary Pathology, (published online before print). 
Added by: Admin (06 Jan 2014 18:24:11 UTC)
Resource type: Journal Article
DOI: 10.1177/0300985813480511
BibTeX citation key: Burns2013
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Categories: General
Keywords: Chelidae, Emydura subglobosa, Schildkröten - turtles + tortoises, Veterinärmedizin - veterinary medicine
Creators: Bicknese, Burns, Shiraki, Stalis, Westropp
Collection: Veterinary Pathology
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Abstract     
Emydura subglobosa Ten of 12 red-bellied short-necked turtles from a single clutch presented at 9 months of age with multiple white to tan nodules on their feet. Histologically, the nodules were composed of large periarticular deposits of mineralized crystalline material that extended into the joint spaces of interphalangeal joints and was surrounded by granulomatous inflammation and fibrosis. Crystallographic analysis determined the material to be apatite (calcium phosphate hydroxide) consistent with the tumoral calcinosis form of hydroxyapatite deposition disease (HADD). HADD has previously been described in aquatic turtles and rarely lizards and must be differentiated from gout in reptiles. A cause for the tumoral calcinosis lesions in these turtles could not be determined; however, based on previous reports in this species, a species-specific predilection, in conjunction with unknown environmental factors, is suspected. The use of the terms HADD, pseudogout (calcium pyrophosphate crystal deposition disease), and calcinosis circumscripta has been inconsistent, creating confusion in the literature.
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