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Peer-reviewed veterinary case report

Spindle cell muscle tumor on cockatiel's right wing

By Dal Pont, Tainah P et al.·Published in Journal of comparative pathology·2025·Setor de Patologia Veterin&#xe1, Brazil·View original on PubMed

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Original publication title: Spindle cell rhabdomyosarcoma in a cockatiel (Nymphicus hollandicus).

Species:
bird

Plain-English summary

A 2-year-old cockatiel was brought to the vet with a large lump on its right wing. Unfortunately, after suffering from a cut on the wing, the bird experienced bleeding and later died. A thorough examination revealed that the lump was a type of cancer called spindle cell rhabdomyosarcoma, which is quite rare in animals. Sadly, due to the severity of the condition and the trauma, the cockatiel could not be saved.

People also search for: cockatiel lump on wing · bird cancer symptoms · what to do if my bird is bleeding

Abstract

A 2-year-old cockatiel (Nymphicus hollandicus) was presented with a large nodule on the ventral aspect of the right wing. Due to an accidental cutaneous trauma, the patient developed haemorrhage and subsequently died. The main necropsy finding was a pedunculated nodule that extended from the right pronator superficialis and biceps brachii muscles. Cytology of the nodule revealed neoplastic spindle cells with cytoplasmic cross-striations and multinucleate strap cells. Histologically, the nodule was composed of neoplastic spindle cells arranged in fascicles with a herringbone pattern. Neoplastic cells had multifocal cytoplasmic immunolabelling for vimentin and desmin, multifocal nuclear and cytoplasmic immunolabelling for myoblast determination protein 1 and rare cytoplasmic immunolabelling for α-smooth muscle actin. Neoplastic cells were negative for pancytokeratin. The final diagnosis was spindle cell rhabdomyosarcoma, a subtype rare in animals.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39904022/