A Seminoma in a Monorchid Guinea Fowl (<i>Numida meleagris</i>)

Kurkure, N. V.; Pande, Vivek; Thomas, Florence; Bhandarkar, A. G.

doi:10.1111/j.1439-0442.2006.00775.x

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…However, the neoplasia replaced the entire testicle and occupied a large part of the coelomic cavity causing organ compression. The contralateral testis was not identified, possibly due to severe atrophy or because the bird was monorchid, as has been reported in a guinea fowl (Numida meleagris) with seminoma (9). We conclude that the ultrastructural study provided important support for the diagnosis because it confirmed that the neoplasia corresponded to a seminoma.…”

Section: Discussionsupporting

confidence: 67%

“…The incidence of testicular tumours is higher in dogs than in other animal species (2). These tumours are rare in birds; however, they have been described in parakeets (Melopsittacus undulatus) and nymphs (Nymphicus hollandicus), (13,14,15), pigeons (Columba livia) (1,4,12,17,18), ducks (Anas platyrhynchos) (6,10,11), guinea fowl (Numida meleagris) (7,9), black swans (Cygnus atratus) (8), geese (Anser cygnoides domesticus) (16,19) and common mynah (Acridotheres tristis) (3). The predisposing factors for the development of testicular tumours are not known in birds; however, one of them could be monorchidism (9).…”

Section: Introductionmentioning

confidence: 99%

“…These tumours are rare in birds; however, they have been described in parakeets (Melopsittacus undulatus) and nymphs (Nymphicus hollandicus), (13,14,15), pigeons (Columba livia) (1,4,12,17,18), ducks (Anas platyrhynchos) (6,10,11), guinea fowl (Numida meleagris) (7,9), black swans (Cygnus atratus) (8), geese (Anser cygnoides domesticus) (16,19) and common mynah (Acridotheres tristis) (3). The predisposing factors for the development of testicular tumours are not known in birds; however, one of them could be monorchidism (9). The three main types of testicular tumours described in animals, including birds, are seminoma (germinal sperm epithelium), Sertoli cell tumour and interstitial cell tumour (sexual cords and gonadal stroma), which may be unilateral or bilateral (2).…”

Section: Introductionmentioning

confidence: 99%

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Diffuse unilateral seminoma in a fighting rooster (Gallus gallus)

Ledesma¹,

Méndez²,

González³

et al. 2018

BJVP

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The aim of this study was to report a diffuse unilateral seminoma in a 4-year-old fighting rooster (Gallus gallus) by considering the anatomic, pathological and ultrastructural features. A significant decline in the viability of the bird's embryos was reported during the last year. The bird died with a marked abdominal distention. During necropsy, a firm ovoid neoplasm of approximately 9 cm long, 8 cm wide and 5 cm thick was found in the region adjacent to the pronephros, replacing the left testicle. The neoplasia was soft and encapsulated, and the cut surface showed extensive areas of haemorrhage interspersed with necrotic areas. Histologically, the neoplastic cells formed large mantles or cords with moderate and eosinophilic cytoplasm. The nuclei were pleomorphic, and some of them were central, while others were eccentric. Mitoses were scarce. Some important findings in the ultrastructural study were nuclei exhibited an elongated, electrodense, rope-like nucleoli and the presence of scarce intracytoplasmic glycogen. The anatomo-pathological and ultrastructural findings of the tumour were consistent with a seminoma. The ultrastructural study provided important support for the diagnosis, as other tumours were ruled out. The early diagnosis of malignant or benign testicular tumours in birds is the key for a timely treatment, as these tumours can metastasize or grow to such an extent that they compromise the lives of birds, as in the present case.

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Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diffuse unilateral seminoma in a fighting rooster (Gallus gallus)

Ledesma¹,

Méndez²,

González³

et al. 2018

BJVP

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“…Seminomas originate from immature germ cells that form the spermatogenic epithelium within the seminiferous tubules of the testis. They have been reported in captive and wild birds, including a Guinea fowl,7 a black swan,8 pigeons,9,10 cockerels,11 and budgerigars 12. They are usually unilateral with occasional atrophy of the contralateral testis, but bilateral seminomas have been reported 8,12.…”

Section: Discussionmentioning

confidence: 99%

Coelomic mass in a rock dove (Columba livia)

Bédard¹,

Lair²,

Langlois³

2007

Veterinary Clinical Pathol

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A 15-year-old domestic rock dove (Columbia livia) was presented to the Service de Médecine Zoologique of the Université de Montréal with a 10-day history of lethargy and chronic weight loss of 1-year duration. Ultrasonographic evaluation of the coelomic cavity revealed the presence of effusion and a well-defined mass containing variably sized hypoechoic nodules of unknown origin. Cytologic evaluation of fine-needle aspirates of the mass indicated a malignant epithelial tumor consisting of round cells arranged individually and in clusters, with large nuclei, prominent nucleoli, moderate anisocytosis and anisokaryosis, atypical mitoses, occasional binucleation and multinucleation, and large numbers of ruptured cells. A diagnosis of seminoma was established on histologic sections obtained at necropsy. The cytologic features of this tumor were similar to those of canine seminomas except for the presence of lymphocytes, which were not observed in significant numbers in cytologic smears or histologic sections. Seminoma should be included in the differential diagnosis for a space-occupying mass causing organ displacement within the coelomic cavity of a male bird.

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Neoplastic Diseases

2013

Diseases of Poultry

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A Seminoma in a Monorchid Guinea Fowl (Numida meleagris)

Cited by 9 publications

References 5 publications

Diffuse unilateral seminoma in a fighting rooster (Gallus gallus)

Diffuse unilateral seminoma in a fighting rooster (Gallus gallus)

Coelomic mass in a rock dove (Columba livia)

Neoplastic Diseases

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