@chrisano: I understand it can be alarming to have lab values that are consistently out of range. Elevated white blood cells (WBC) - or as you noted the medical term for this of leukocytosis - can be associated with a variety of factors, most commonly infection/inflammation, stress and/or smoking.

In the context of this discussion on Malignancy Associated Sweet's Syndrome (MASS), it's important to note the differention between elevated WBC and MASS, as the latter is a rare condition associated with skin lesions - generally blister-like in nature - along with fever, with a specific elevation of neutrophils, a component of WBCs.

A hematologist may be helpful in determining the underlying reason for consistent elevation in these counts in your particular case. Perhaps if you've not already done so, you can ask one of your providers for a referral?