Fatal hemothorax caused by pleural mesothelioma in a lion

被引:0
作者
Rocha, Paulo Ricardo D. [1 ,2 ]
Duarte, Roberta P. [2 ]
Laranjeira, Maria Gisela [2 ]
Melo, Tawane Agda L. [2 ]
Azevedo, Eustaquio Z. [3 ]
Garcia, Sergio D. [2 ]
Machado, Gisele F. [2 ]
机构
[1] Univ Paulista Unip, Ctr Pesquisas, Ave Jose Maria Whitaker 290, BR-04057000 Sao Paulo, SP, Brazil
[2] Univ Estadual Paulista Julio de Mesquita Filho Un, Fac Med Vet, Rua Clovis Pestana 793, BR-16050680 Aracatuba, SP, Brazil
[3] Zool Municipal Aracatuba, Rua Fico S-N, BR-16050387 Aracatuba, SP, Brazil
来源
PESQUISA VETERINARIA BRASILEIRA | 2019年 / 39卷 / 06期
关键词
Hemothorax; pleural mesothelioma; immunohistochemistry; Panthera leo; lion; mesothelioma; zoo animal; wildlife animals; pathology;
D O I
10.1590/1678-5150-PVB-6184
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
Mesothelioma is considered a malignant neoplasm caused by the proliferation of mesothelial cells mostly from the pleura, peritoneum and pericardium. Here we described a case of fatal hemothorax caused by pleural mesothelioma in a lion by means of necropsy, histopathology and immunohistochemistry. Gross inspection of the thoracic cavity showed hemothorax with about 4 liters of blood. Microscopically, numerous, randomly distributed, soft, red-pink, irregular masses with up to 1cm in diameter were observed in both visceral and parietal pleurae. Microscopically, a papillary structure pattern was observed in the thoracic masses, composed mainly by one layer of cubic mesothelial cells, which presented eosinophilic cytoplasm, central nucleus and evident nucleolus, supported by a low cellular fibrovascularstroma. Neoplastic cells were positive for both cytokeratin and vimentin by immunohistochemistry. This seems to be the first report of fatal hemothorax caused by pleural mesothelioma in a lion.
引用
收藏
页码:416 / 418
页数:3
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