A 15- year-old MN DSH cat was presented with a history of vomiting hairballs and weight loss in three years before this visit. Physical exam at that time was unremarkable. Blood chemistry found hyperphosphatemia, hypercholesterolemia, hypercalcemia, hypernatremia, hyperchloremia, hyperamylasemia, hypermagnesemia, and a high calculated osmolality. CBC revealed leukopenia, neutropenia, lymphopenia, and thrombocytopenia. The urinalysis, and urine microalbumin were all within normal reference range. The T4 was high and methimazole treatment was initiated.
A 15- year-old MN DSH cat was presented with a history of vomiting hairballs and weight loss in three years before this visit. Physical exam at that time was unremarkable. Blood chemistry found hyperphosphatemia, hypercholesterolemia, hypercalcemia, hypernatremia, hyperchloremia, hyperamylasemia, hypermagnesemia, and a high calculated osmolality. CBC revealed leukopenia, neutropenia, lymphopenia, and thrombocytopenia. The urinalysis, and urine microalbumin were all within normal reference range. The T4 was high and methimazole treatment was initiated. However, the weight loss continued over the next 2 years despite treatment with methimazole. Recheck blood chemistry revealed hypoglycemia, and an elevated urea. CBC found thrombocytopenia and lymphopenia. The cat developed an infection of the upper respiratory tract a few months later and radiographs of the thorax (three views) were performed, which did not reveal any obvious masses.