Squamous Cell Carcinoma of the Oropharynx and Esophagus with Pulmonary Metastasis in a Backyard Laying Hen.
A backyard laying hen exhibiting muscular atrophy, dyspnea, and absence of egg production was analyzed for diagnostic insights. Gross findings revealed the presence of a large ulcerated mass with irregular edges involving the caudal part of the oropharynx and the cranial part of the esophagus, occluding the lumen of the esophagus and compressing the trachea. Small nodular lesions were detected also in the lungs. Histologically, both esophageal and pulmonary masses were characterized by nests of pleomorphic epithelial cells with squamous differentiation. The diagnosis was of squamous cell carcinoma of the esophagus with the uncommon feature of pulmonary metastasis.
A Veterinary Diagnostic Laboratory of Treviso, Istituto Zooprofilattico Sperimentale delle Venezie, vicolo Mazzini 4, 31020 Villorba (TV), Italy.
Laura
L
Nordio
B Laboratory of Histopathology, Istituto Zooprofilattico Sperimentale delle Venezie, viale dell'Università 10, 35020 Legnaro (PD), Italy.
Marta
M
Vascellari
A Veterinary Diagnostic Laboratory of Treviso, Istituto Zooprofilattico Sperimentale delle Venezie, vicolo Mazzini 4, 31020 Villorba (TV), Italy.
Giacomo
G
Berto
A Veterinary Diagnostic Laboratory of Treviso, Istituto Zooprofilattico Sperimentale delle Venezie, vicolo Mazzini 4, 31020 Villorba (TV), Italy.
Luca
L
BanoLuca
D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000556:secondary / Q000662:veterinary*; D002645:Chickens; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D005260:Female; D008175:Lung Neoplasms / Q000175:diagnosis / Q000556:secondary / Q000662:veterinary*; D009959:Oropharyngeal Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D011201:Poultry Diseases / Q000175:diagnosis* / Q000473:pathology
avian; esophagus; oropharynx; pulmonary metastasis; squamous cell carcinoma