Pancreatic extramedullary hematopoiesis in a dog. (English)

Extramedullary hematopoiesis (EMH) is a condition in which hematopoietic cells proliferate outside the bone marrow. It is more commonly observed in the spleen, but its presence is also found less frequently in other sites such as lymph nodes and the liver. The aim of this report is to describe a case of EMH in an atypical location. Necropsy of a 10-year-old male Rottweiler dog revealed a nodular lesion in the pancreatic tissue that was microscopically compatible with EMH. This condition is rare in the pancreas, with no reports existing in veterinary medicine and only one found in human medicine, where it was suggested to be associated with squamous cell carcinoma of the lung. The authors of the present case suggest the inclusion of EMH as a differential diagnosis in cases of nodular pancreatic lesions and reaffirm the importance of histopathology for the correct diagnosis. [ABSTRACT FROM AUTHOR]

A hematopoiese extramedular (HEM) é uma condição na qual as células hematopoiéticas proliferam fora da medula óssea. É comumente observada no baço, mas também ocorre em menor frequente em outros locais, como linfonodos e fígado. O objetivo deste relato é descrever um caso de HEM em localização atípica. A necropsia de um cão Rottweiler macho de 10 anos de idade revelou uma lesão nodular no tecido pancreático, sendo microscopicamente compatível com HEM. Esta condição é rara no pâncreas, não havendo relatos na medicina veterinária e apenas um encontrado na medicina humana, onde foi sugerida a sua associação com o carcinoma de células escamosas pulmonar. Os autores do presente caso sugerem a inclusão da HEM como diagnóstico diferencial nos casos de lesões nodulares pancreáticas e reafirmam a importância da histopatologia para o correto diagnóstico. [ABSTRACT FROM AUTHOR]

Copyright of Acta Veterinaria Brasilica is the property of Acta Veterinaria Brasilica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)