Veterinary Medicine - June 2008 - (Page 315)

4. The cat immediately after exenteration of the right eye and tarsorrhaphy. 5. A histologic midsaggital section of the cat’s right eye and surrounding neoplastic tissue. The tumor cells completely obscure the periorbital tissue and skeletal muscle and invade the conjunctiva and nictitating membrane. Note the dark-blue-stained areas of neoplastic cells in the periocular tissues and globe and the pink-stained area of exudate inside the globe (hematoxylin-eosin, no magniﬁcation). 6. Histologic examination of the periocular tissues revealed cells that contained scant cytoplasm and large round nuclei with densely stippled chromatin. Each cell has a single prominent nucleolus, and there is moderate anisocytosis and anisokaryosis (hematoxylin-eosin, 200X). 7. The cat undergoing ultrasonographic examination. Since there was no evidence of systemic neoplasia, localized radiation therapy was recommended to treat the lesion recurrence. Because of nancial constraints, the owner elected to monitor for tumor progression. and testing for feline leukemia virus (FeLV) infection be done before de nitive treatment plans were made. Two weeks later, FeLV and feline immunode ciency virus (FIV) tests were done and the results were negative. Orbital palpation revealed a swollen area, which could have been a regrowth of the mass. Additional ultrasonographic and radiographic examinations were recommended. SIX-WEEK POSTOPERATIVE EVALUATION Six weeks after surgery, orbital ultrasonography (Figure 7) showed a soft tissue mass measuring 29.5 mm in diameter. This mass was evaluated with color ow Doppler ultrasound and appeared to be well-vascularized (Figure 8). Cytologic examination of a ne-needle aspirate of the submandibular lymph nodes did not reveal neoplastic cells. Thoracic and abdominal radiographic examination results were normal. Abdominal ultrasonography revealed that the cat had hepatomegaly, splenomegaly, and possible degenerative changes in both kidneys; however, cytologic evaluation of neneedle aspirates of the spleen and liver failed to show any neoplastic cells. FOLLOW-UP At a recheck examination three months after surgery, the cat was doing well, but the enlarged area was still present in the right orbit. The right submandibular lymph node was not enlarged. A repeat ultrasonographic examination of the orbit demonstrated that the mass had VETERINARY MEDICINE June 2008 315

Table of Contents Feed for the Digital Edition of Veterinary Medicine - June 2008

Veterinary Medicine - June 2008 Contents Leading Off Clinical Exposures Idea Exchange A Challenging Case: Conjunctival Lymphoma in a Cat Updates on Canine Hypoadrenocorticism Product Preview CE Form Advertiser Index Marketplace/Classifieds Mind Over Miller Clinical Edge - June 2008 Table of Contents Managing Diabetes Mellitus in Cats: What Makes it Work? Porcine Insulin Zinc Suspension in the Management of Feline Diabetes Mellitus Monitoring Diabetes Mellitus in Diabetic Cats Feline Diabetes Mellitus: Important Client Communication Points

Veterinary Medicine - June 2008

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