PULMONARY ADENOCARCINOMA WITH OSSEOUS METASTASIS AND SECONDARY PARESIS IN A BLUE AND GOLD MACAW (<i>ARA ARARAUNA</i>)

Fredholm, Daniel V.; Carpenter, James W.; Shumacher, Loni L.; Moon, Rachel

doi:10.1638/2012-0108r.1

Cited by 13 publications

(8 citation statements)

References 9 publications

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“…A high prevalence of respiratory diseases, both of bacterial and mycotic origin, is reported in pet parrots [26]. Although neoplastic pathologies are less frequent, a case of pulmonary adenocarcinoma in a blue-and-gold macaw has been reported [27]. It is also possible to find metastatic neoplasia in the lung parenchyma [28].…”

Section: Discussionmentioning

confidence: 99%

Normal computed tomographic features and reference values for the coelomic cavity in pet parrots

et al. 2016

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BackgroundThe increasing popularity gained by pet birds over recent decades has highlighted the role of avian medicine and surgery in the global veterinary scenario; such a need for speciality avian medical practice reflects the rising expectation for high-standard diagnostic imaging procedures. The aim of this study is to provide an atlas of matched anatomical cross-sections and contrast-enhanced CT images of the coelomic cavity in three highly diffused psittacine species.ResultsContrast-enhanced computed tomographic studies of the coelomic cavity were performed in 5 blue-and-gold macaws, 4 African grey parrots and 6 monk parakeets by means of a 4-multidetector-row CT scanner. Both pre- and post-contrast scans were acquired. Anatomical reference cross-sections were obtained from 5 blue-and-gold macaw, 7 African grey parrot, and 9 monk parakeet cadavers. The specimens were stored in a −20 °C freezer until completely frozen and then sliced at 5-mm intervals by means of a band saw. All the slices were photographed on both sides. Individual anatomical structures were identified by means of the available literature. Pre- and post-contrast attenuation reference values for the main coelomic organs are reported in Hounsfield units (HU).ConclusionsThe results provide an atlas of matched anatomical cross-sections and contrast-enhanced CT images of the coelomic cavity in three highly diffused psittacine species.

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Section: Discussionmentioning

confidence: 99%

Normal computed tomographic features and reference values for the coelomic cavity in pet parrots

et al. 2016

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“…“Superficial spiculated bone” which may or may not represent periosteal bone proliferation was noted with no normal bone structure noted in one case 63 . Monostotic air sac neoplasia involvement has been described with some cases of pulmonary neoplasia metastasizing to ribs 66 , 67 , but multicentric air sac neoplasia has not been described in birds.…”

Section: Discussionmentioning

confidence: 99%

“…Adenocarcinoma of the pulmonary parenchyma (lung) has been occasionally described with a unique form of pulmonary pathology described in cockatoos 66 – 68 . In both cases, pulmonary neoplasm can locally invade the air sacs lying adjacent to the affected lung and/or thoracic vertebrae that are in direct contact with the lung 66 – 68 .…”

Section: Discussionmentioning

confidence: 99%

The first occurrence of an avian-style respiratory infection in a non-avian dinosaur

Woodruff

Wolff

Wedel

et al. 2022

Sci Rep

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Other than repaired fractures, osteoarthritis, and periosteal reaction, the vertebrate fossil record has limited evidence of non-osseous diseases. This difficulty in paleontological diagnoses stems from (1) the inability to conduct medical testing, (2) soft-tissue pathologic structures are less likely to be preserved, and (3) many osseous lesions are not diagnostically specific. However, here reported for the first time is an avian-style respiratory disorder in a non-avian dinosaur. This sauropod presents irregular bony pathologic structures stemming from the pneumatic features in the cervical vertebrae. As sauropods show well-understood osteological correlates indicating that respiratory tissues were incorporated into the post-cranial skeleton, and thus likely had an ‘avian-style’ form of respiration, it is most parsimonious to identify these pathologic structures as stemming from a respiratory infection. Although several extant avian infections produce comparable symptoms, the most parsimonious is airsacculitis with associated osteomyelitis. From actinobacterial to fungal in origin, airsacculitis is an extremely prevalent respiratory disorder in birds today. While we cannot pinpoint the specific infectious agent that caused the airsacculitis, this diagnosis establishes the first fossil record of this disease. Additionally, it allows us increased insight into the medical disorders of dinosaurs from a phylogenetic perspective and understanding what maladies plagued the “fearfully great lizards”.

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“…The neoplastic process in this case displayed significant bone involvement that was predominantly characterised by a very granular, marked osteoproductivity, compared to any of the previously reported cases. The majority of masses in the previous cases involved soft tissue, some with minimal bone involvement radiographically . Each of the histopathological descriptions varies slightly but most describe neoplastic glands with columnar epithelium with uniform nuclei .…”

Section: Discussionmentioning

confidence: 99%

Humeral air sac cystadenocarcinoma in a rainbow lorikeet (Trichoglossus moluccanus)

2020

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Background A 17-year-old female rainbow lorikeet (Trichoglossus moluccanus) was presented for a swelling over the right proximal humerus and an inability to fly.Case report Radiographs revealed a markedly osteoproductive and moderately osteolytic lesion of the proximal left humerus with marked associated soft tissue swelling. Biopsy of the proximal humerus was consistent with an air sac cystadenocarcioma. The bird's condition deteriorated over 25 days after initial presentation and it developed a respiratory wheeze, tail bob, tachypnea and died. On postmortem examination, the bird was found to have an air sac cystadenocarcinoma associated with the proximal humerus, extending into the thoracic cavity through a network of fibrous sheets and displaying infiltration into the lung tissue bilaterally.Conclusion This is the first report of a humeral air sac cystadenocarcinoma in a lorikeet and it builds on our understanding of the species affected by avian neoplasia.

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PULMONARY ADENOCARCINOMA WITH OSSEOUS METASTASIS AND SECONDARY PARESIS IN A BLUE AND GOLD MACAW (ARA ARARAUNA)

Cited by 13 publications

References 9 publications

Normal computed tomographic features and reference values for the coelomic cavity in pet parrots

Normal computed tomographic features and reference values for the coelomic cavity in pet parrots

The first occurrence of an avian-style respiratory infection in a non-avian dinosaur

Humeral air sac cystadenocarcinoma in a rainbow lorikeet (Trichoglossus moluccanus)

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