This is an Chloroacetate esterase positive stain.

Explain why a WBC count of 800,000/uL on a patient with CML would not be valid. Describe how a valid WBC count could be performed on the patient.

The JAK2 V617F mutation has been shown in large numbers of patients with Polycythemia Vera and in some patients with Essesntial Thrombocythemia and Idiopathic Myelofibrosis.

DIC, Disseminated Intravascular Coagulation, may occur as a complication of:

Select all the following criteria that is used to classify the Acute Leukemias according to the World Health Organization.

A “dry tap’ is a characteristic of myeloid fibrosis with myeloid metaplasia due to:

When an elevated platelet count is part of a Chronic Myeloproliferative Disorder, the patient can experience episodes of hemorrhagic and thrombotic episodes.

The BCR:ABL fusion gene leads to:

The Sudan Black B cytochemical stain differentiates:

Match the cytochemical stain with what it stains in the cell.