Pituitary metastases have rarely been recorded in dogs, and to date, none of those reported have been of pancreatic origin. MRI findings are available for only one of those cases. Herein the authors present an 11 yr old English springer spaniel diagnosed with pituitary metastasis of pancreatic origin with a 24 hr history of blindness and only a single lesion on MRI. Neurologic and ophthalmologic examinations localized the lesion to the optic nerves, optic tracts, or optic chiasm. MRI showed a single lesion characterized by a well-circumscribed pituitary mass with extrasellar extension, causing compression of the optic chiasm. Signal intensity was unusual as enhancement could not be appreciated after contrast administration. The dog was euthanized without further diagnostic tests. Histopathologic examination revealed a poorly differentiated exocrine pancreatic carcinoma with widespread metastasis involving the pituitary gland. To the authors’ knowledge, this is the first such case reported in a dog. Pituitary metastases should be included as a differential diagnosis for dogs presenting with acute-onset blindness and for single brain masses affecting the pituitary gland.
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November/December 2013
Case Reports|
November 01 2013
Pituitary Metastasis of Pancreatic Origin in a Dog Presenting with Acute-Onset Blindness
Rodrigo Gutierrez-Quintana, MVZ, MVM, DECVN, MRCVS;
Rodrigo Gutierrez-Quintana, MVZ, MVM, DECVN, MRCVS
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
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Inés Carrera, DVM, MVM, DECVDI;
Inés Carrera, DVM, MVM, DECVDI
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
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Melanie Dobromylskyj, BSc (Hons), BVSc, PhD;
Melanie Dobromylskyj, BSc (Hons), BVSc, PhD
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
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Janet Patterson-Kane, BVSc, DACVP;
Janet Patterson-Kane, BVSc, DACVP
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
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Maria Ortega, DVM;
Maria Ortega, DVM
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
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Annette Wessmann, Dr.med.vet., DECVN, PGCertAcPrac, FHEA
Annette Wessmann, Dr.med.vet., DECVN, PGCertAcPrac, FHEA
*
Small Animal Clinical Sciences (R.G-Q., M.O., A.W.) and Institute of Infection Immunity and Inflammation (M.D., J.P-K.), College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK; Section of Diagnostic Imaging, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland (I.C.).
Correspondence: annettewessmann@scarsdalevets.com (A.W.)
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J Am Anim Hosp Assoc (2013) 49 (6): 403–406.
Citation
Rodrigo Gutierrez-Quintana, Inés Carrera, Melanie Dobromylskyj, Janet Patterson-Kane, Maria Ortega, Annette Wessmann; Pituitary Metastasis of Pancreatic Origin in a Dog Presenting with Acute-Onset Blindness. J Am Anim Hosp Assoc 1 November 2013; 49 (6): 403–406. doi: https://doi.org/10.5326/JAAHA-MS-5926
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