An intracoelomic mass was palpated on an annual exam of a 24-year-old male Solomon Island eclectus parrot (Eclectus roratus solomonensis). The initial diagnostic workup included a complete blood count, plasma biochemistry panel, and coelomic ultrasound. Computed tomography was highly suggestive of a testicular mass. Tamoxifen and the gonadotropin-releasing hormone agonists leuprolide and deslorelin were administered as neoadjunctive endocrine therapies. Biopsy and histologic examination confirmed a testicular mass consistent with a round cell tumor. Four doses of carboplatin 15 mg/kg IV were administered as neoadjunctive chemotherapy, and testicular size decreased by approximately 95%. The remaining gross tumor was removed via orchidectomy with clean but narrow margins. Seven months following surgery, a contrast CT scan did not show any evidence of recurrence of or metastasis from the original mass. This is the first report of successful treatment of a testicular tumor in a psittacine with neoadjuvant chemotherapy and orchidectomy.
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7 October 2024
Successful Neoadjuvant Chemotherapy and Surgical Removal of a Nonmetastatic Testicular Round Cell Tumor in a Solomon Island Eclectus Parrot (Eclectus roratus solomonensis)
Rachel Baden,
Brian Speer,
Michael Garner,
Vanessa Hernández Urraca,
Brenna Fitzgerald
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Avian
Eclectus roratus solomonensis
neoadjuvant chemotherapy
orchidectomy
seminoma
Sertoli cell tumor
Solomon Island eclectus