Atypical lethal systemic granulomatous inflammation caused by Pseudomonas aeruginosa in a green iguana (Iguana iguana): A postmortem case report
Issued Date
2026-09-01
Resource Type
eISSN
26299968
Scopus ID
2-s2.0-105026029693
Journal Title
Veterinary Integrative Sciences
Volume
24
Issue
3
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SCOPUS
Bibliographic Citation
Veterinary Integrative Sciences Vol.24 No.3 (2026)
Suggested Citation
Petaipanakij P., Klinsrithong S., Chatrungruengkul S., Paenkoed S., Suwannaprapha P. Atypical lethal systemic granulomatous inflammation caused by Pseudomonas aeruginosa in a green iguana (Iguana iguana): A postmortem case report. Veterinary Integrative Sciences Vol.24 No.3 (2026). doi:10.12982/VIS.2026.061 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/114577
Title
Atypical lethal systemic granulomatous inflammation caused by Pseudomonas aeruginosa in a green iguana (Iguana iguana): A postmortem case report
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Abstract
A 5-year-old male green iguana (Iguana iguana) from a privately maintained outdoor enclosure was submitted for necropsy following a brief period of lethargy and anorexia, which rapidly progressed to death. A gross examination revealed coelomic and pericardial effusions, pulmonary consolidation, multifocal nodular lesions in multiple organs, most prominent and numerous in the lungs, accompanied by verrucous endocarditis. The histopathology report indicated widespread heterophilic and histiocytic granulomas with central necrosis and basophilic bacterial remnants in the lungs, heart, liver, and spleen. Microbiological cultures yielded Pseudomonas aeruginosa from coelomic and pericardial effusions, while special stains (acid-fast, PAS) and PCR for Mycobacterium spp. were negative, thereby ruling out mycobacterial and fungal infections. This is the first report of systemic granulomatous inflammation caused by Pseudomonas aeruginosa in a green iguana, underscoring its pathogenic potential in reptiles housed under suboptimal husbandry conditions and highlighting the importance of comprehensive diagnostics in exotic species.