1. Capen CC. Tumors of the endocrine glands. In: Meuten DJ, ed. Tumors in domestic animals. 4th ed. Ames, Iowa: Iowa State Press, 2002;610–625.
2. Pollard RE, Reilly CM, Uerling MR, et al. Cross-sectional imaging characteristics of pituitary adenomas, invasive adenomas, and adenocarcinomas in dogs: 33 cases (1988–2006). J Vet Intern Med 2010;24: 160–165.
3. Hansen TM, Satra S, Lim M, et al. Invasive adenoma and pituitary carcinoma: a SEER database analysis. Neurosurg Rev 2014; 37: 279–286.
4. Summers BA, Cummings JF, de Lahunta A. Veterinary neuropathology. St Louis: Mosby, 2005;380–384.
5. Nyska A, Harmelin, A, Baneth, G, et al. Suprasellar differentiated germ cell tumor in a male dog. J Vet Diagn Invest 1993; 5: 462–467.
6. Capen CC. Tumors of the nervous system. In: Meuten DJ, ed. Tumors in domestic animals. 4th ed. Ames, Iowa: Iowa State Press, 2002;697–754.
7. Wood FD, Pollard RE, Uerling MR, et al. Diagnostic imaging findings and endocrine test results in dogs with pituitary-dependent hyperadrenocorticism that did or did not have neurologic abnormalities: 157 cases (1989–2005). J Am Vet Med Assoc 2007;231: 1081–1085.
8. Kent MS, Bommarito D, Feldman E, et al. Survival, neurological response, and prognostic factors in dogs with pituitary masses treated with radiation therapy and untreated dogs. J Vet Intern Med 2007; 21: 1027–1033.
9. Hanson JM, Teske E, Voorhout G, et al. Prognostic factors for outcome after transsphenoidal hypophysectomy in dogs with pituitary-dependent hyperadrenocorticism. J Neurosurg 2007; 107: 830–840.
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A 5-year-old 32.2-kg (70.8-lb) spayed female Doberman Pinscher was evaluated because of a history of abnormal behavior and inappropriate urination for 5 weeks, circling to the right for 1 week, and mydriasis of the left eye for approximately 3 days.
Physical examination abnormalities were limited to the nervous system. The dog had obtunded mentation. The left eye had a dilated pupil that was nonresponsive to light directed into either eye, ptosis, abnormal menace response, and absence of a vestibulo-ocular reflex. The dog compulsively walked in wide circles to the right with otherwise normal gait, postural