Departmental Bulletin Paper An intrathoracic ectopic liver with pleural effusion in a dog

Iwaki, Yoshimi  ,  Takagi, Satoshi  ,  Morishita, Keitaro  ,  Hanazono, Kiwamu  ,  Hosoya, Kenji  ,  Okumura, Masahiro

65 ( 2 )  , pp.95 - 99 , 2017-05 , Faculty of Veterinary Medicine, Hokkaido University
A 10-year-old, spayed female dog with intermittent coughing and respiratory distress was presented at our hospital. Thoracic radiographs revealed a 71×43 mm intrathoracic solitary mass. After one week, coughing worsened and pleural effusion was found. The intrathoracic mass had the same intensity as the liver in contrast-enhanced computed tomography images. There were no signs of diaphragmatic hernia, and attachment of the mass to the diaphragm and the caudal vena cava was observed during surgery. Histopathologically, the mass was composed of normal hepatic parenchyma, and based on this finding and the gross findings, it was diagnosed as an ectopic liver. Owing to its location, the ectopic liver may have caused regional venous occlusion, which resulted in the clinical symptoms observed.

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