Pituitary apoplexy-like disease in 4 dogs

 

pubblicazione di Radiologia Diagnostica & Interventistica San Marco | del 01/03/2007

Bertolini G, Rossetti E, Caldin M. Pituitary apoplexy-like disease in 4 dogs.J Vet Intern Med. 2007 Nov-Dec;21(6):1251-7. (scarica articolo intero).

Abstract

BACKGROUND:

Pituitary apoplexy in humans is a clinical syndrome resulting from sudden infarction, hemorrhage, or both in a normal or an adenomatous pituitary gland.

OBJECTIVE:

Describe a clinical syndrome in dogs similar to pituitary apoplexy in humans.

ANIMALS:

Four dogs exhibiting a sudden onset of neurologic signs.

METHODS:

A retrospective study was used, including clinical examination, computed tomography (CT), postmortem examination, and histopathology of the brain. Pituitary tissue from 3 of the dogs was subjected to immunocytochemistry.

RESULTS:

Four dogs (2 Mongrels, 1 Bordeaux Dog, and 1 Cocker Spaniel; median age, 11 years; median body weight, 20.5 kg) presented with acute neurologic signs including depression (n = 3), behavioral changes (n = 1), vision loss (n = 1), seizures (n = 1), and collapse (n = 1). CT disclosed suprasellar infarction, hemorrhage, or both associated with a pituitary macroadenoma in 3 dogs and a frank hemorrhage in a nonadenomatous pituitary gland in 1 dog. CT findings were correlated with postmortem findings, and pituitary apoplexy was confirmed by histopathology and immunocytochemistry of the pituitary tissue.

CONCLUSIONS AND CLINICAL IMPORTANCE:

This study provides histopathologic evidence of pituitary apoplexy in dogs. The results are relevant for future diagnosis and treatment of pituitary disease in dogs.

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