image of Neoplasia
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Neoplastic diseases of reptiles are frequently documented in the literature. This chapter concentrates on common tumours as well as those in which more detailed clinical information has been collected. This chapter opens up with general diagnostics and treatment, with the majority of the chapter describing specific tumours found in reptiles in depth.

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23.1 Cytology is required to distinguish granulomas from neoplasia. This white mass over the joint of a leopard gecko is articular gout (arrowed).
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23.4 Cloacal carcinoma in a desert iguana. This is a formalin-fixed specimen.
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23.5 Endoscopic view of a tracheal chondroma in a ball python. (Courtesy of Angela Lennox)
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23.6 Longitudinal sections through the heart of a corn snake supporting metastatic foci (arrowed) of a chondrosarcoma. The foci are white and glisten.
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23.7 Histology of a cutaneous squamous cell carcinoma from a bearded dragon. (Haematoxylin and eosin stain; X10 objective)
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23.8 A large mottled yellow caudal coelomic mass is a malignant chromatophoroma in a bearded dragon. The coelomic fat pads have atrophied.
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23.9 An ulcerated liposarcoma in a boa constrictor. (Courtesy of Bob Dahlhausen)
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23.10 Subcutaneous mast cell tumours in a green iguana. (Courtesy of Sarah Fassler)
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23.11 A thyroid adenoma in a green iguana (arrowed).
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23.12 (a) Stomatitis in a diamond python with lymphoma. (b) New methylene-blue staining of an oral swab demonstrating lymphoblasts. (Courtesy of Paul Raiti)
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23.13 A renal carcinoma in a boa constrictor. (Courtesy of Robert Schmidt)
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23.14 Multicentric and malignant peripheral nerve sheath tumour (PNST) in a kingsnake.
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23.15 An ovarian teratoma in a green iguana. (Courtesy of Chris Sanders)
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