Radiologic features of radiolucent foreign bodies ingestion in common mynah (Acridotheres tristis).

Molazem, Mohammad; Soroori, Sarang; Soflaei, Reihaneh; Bahonar, Alireza; Madani, Seyed Ahmad; Mokhtari, Roshanak; Hartmann, Antje (2023). Radiologic features of radiolucent foreign bodies ingestion in common mynah (Acridotheres tristis). Veterinary medicine and science, 9(3), pp. 1163-1171. Wiley 10.1002/vms3.1079

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BACKGROUND

In mynahs with foreign body ingestion, delayed diagnosis increases the risk of poor outcomes.

OBJECTIVE

The aim of this study was to evaluate various radiologic features on plain and contrast radiographs in mynahs for assessing the presence of ingested foreign bodies.

METHODS

In our cross-sectional study, a total of 41 mynahs were included. The diagnosis was made by history, surgery, excision by forceps or excretion in the faeces. Overall, 21 mynahs were considered not to have a foreign body in their gastrointestinal tract. Plain and post-contrast [oral administration of barium sulphate colloidal suspension of 25% weight/volume (20 mg/kg)] lateral and ventrodorsal radiographs from the cervical and coelomic cavity were taken. Different parameters including oesophageal, proventricular, and small intestinal diameters and opacities were assessed. Image evaluation was performed by two national board-certified radiologists blinded to the final diagnoses.

RESULTS

The inter- and intra-observer reliabilities of the diagnostic features were significant (p < 0.001). The diagnosis of the foreign body was highly accurate [90.2% (95% CI: 76.9%, 92.3%)] with the sensitivity, specificity, and area under the representative characteristic curve of 90.0%, 90.5%, and 0.93%, respectively for plain radiographs. The size and opacity of the oesophagus, proventriculus, and intestinal loops as well as serosal details were significantly different between mynahs with and without foreign body intake (p < 0.05).

CONCLUSIONS

Lateral and ventrodorsal plain radiographs are highly reliable for diagnosing the presence of non-opaque obstructing objects in the gastrointestinal tract of mynahs. Attention should be paid to the size and opacity of the oesophagus, extension, and opacity of the proventriculus, segmental opacity of intestinal loops, and decrease in serosal details.

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