A poorly‐differentiated squamous cell thymoma in a chicken with lymphoma

Balaguer, L.; Romano, Jacinta; Mora, Azucena

doi:10.1080/03079459508419113

Cited by 11 publications

(6 citation statements)

References 8 publications

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“…Another case of thymoma was reported in female Java sparrow (Padda oryzivora) (10). Another case of thymoma was reported in five chickens associated with thymoma caused by Marek's diseases virus infection (11). A thymoma in unspecific species of finch (12).…”

Section: Discussionmentioning

confidence: 99%

Mixed thymic tumor in a rooster: gross and histological features

Al-Mahmood¹,

AL-Gadhi²,

Al-Ajeli³

et al. 2019

IJVS

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A 2-year-old rooster local breed suffered from anorexia, emaciation with an abnormal large mass in the lateral side in the cervical region was attended to Veterinary Teaching Hospital belong to College of Veterinary Medicine, Mosul University. After physical examination a movable and friable mass was recognized in the cervical region, the case sends for surgical intervention. Gross examination of the removed mass showed a friable, pale, will capsulated with hemorrhagic areas. Microscopically, the mass included three types of tumors. Squamous cell thymic carcinoma characterized by the presence of keratin pearl. Lymphoma that characterized by atypical polymorphic lymphocytes, vesicular nucleus, and pyknotic nucleoli, while cytoplasm appears eosinophilic to granular with ill-define borders. Lipoma which appears as irregular shape of adipocytes that lack their nucleus, with scattered infiltration of pyknotic lymphocytes. This is the first pathological report of mixed tumor of the thymus gland in rooster that composed from squamous cell thymic carcinoma, lymphoma and lipoma.

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Section: Discussionmentioning

confidence: 99%

Mixed thymic tumor in a rooster: gross and histological features

Al-Mahmood¹,

AL-Gadhi²,

Al-Ajeli³

et al. 2019

IJVS

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“…Thymomas are defined as primary neoplasms of thymic epithelial cells with varying proportions of non-neoplastic lymphocytes. The incidence of this tumour is low in domestic animals (MOULToN, 1990;)UBB et al, 1993;BALAGUER et al, 1995), and particularly in dogs (KLEBANOW, 1992;) OOB et al, 1993;ATWATER et al, 1994;SORDE et al, 1994). According to HADLOW (1978) and MOULTON (1990), however, goats display a high incidence ofthymoma.…”

Section: Introductionmentioning

confidence: 99%

Immunohistochemical Study of a Non‐invasive Canine Thymoma: A Case Report

González¹,

Rodríguez²,

Pizarro³

et al. 1997

Journal of Veterinary Medicine Series A

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Summary We describe a case of canine thymoma in an 11‐year‐old pure‐bred female Spanish Mastiff. On postmortem examination a big mass was found in the thoracic cavity. Histologically the neoplastic parenchyma showed great structural variability; the principal findings included the presence of tumour cells forming cords or sheets, cystic formations, Hassall‐corpuscle like squamous formations, and small or intermediate calibre vessels encircled by areas with eosinophilic material and lymphocytes. In order to determine the histogenesis of the thymic neoplasia we used immunohistochemical techniques specific for different markers: cytokeratins, vimentin, desmin and neuron specific enolase. A strong positive immunoreaction of rumour cells to wide spectrum cytokeratins confirmed the epithelial origin of the neoplasia.

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“…14 Thymomas have been reported in various aged birds, ranging from an 8-wk-old chicken ( Gallus domesticus ) to a 49-y-old scarlet macaw ( Ara macao ). 2,8,15 In chickens, the thymus is located parallel to the vagus nerve and jugular veins and extends from the third cervical vertebra to the cranial celom, in 7–8 separate lobes located on either side of the neck. 5,12…”

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confidence: 99%

“…), a Java sparrow ( Padda oryzivora ), and an American robin ( Turdus migratorius ). 2,4,6–10,13,16,17 We describe the clinical history, gross lesions, and microscopic lesions of a thymoma in a backyard Leghorn chicken.…”

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confidence: 99%

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Thymoma in an aged backyard Leghorn chicken, with reviews of a database and literature

et al. 2021

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A 7-y-old backyard Leghorn chicken ( Gallus domesticus) was submitted to the California Animal Health and Food Safety Laboratory System (CAHFS)–Turlock branch for postmortem examination, with a history of unexpected death. At postmortem examination, a hemorrhagic soft tissue mass was observed in the cervical region. Microscopically, a densely cellular neoplasm of polygonal epithelial cells and small lymphocytes was observed. The microscopic features of the neoplasm in combination with positive immunohistochemistry for pancytokeratin and CD3 were used to classify the lesion as a thymoma. Thymoma was diagnosed in only 5 birds submitted to CAHFS from 1990 to 2019. Thymoma has been described only rarely in birds, and is an unusual diagnosis in backyard chickens.

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A poorly‐differentiated squamous cell thymoma in a chicken with lymphoma

Cited by 11 publications

References 8 publications

Mixed thymic tumor in a rooster: gross and histological features

Mixed thymic tumor in a rooster: gross and histological features

Immunohistochemical Study of a Non‐invasive Canine Thymoma: A Case Report

Thymoma in an aged backyard Leghorn chicken, with reviews of a database and literature

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