A Phenotype Workup Is Performed on a Patient Suspected to Have

Multiple Choice

A phenotype workup is performed on a patient suspected to have ALL. The results indicate that some of the leukemic cells express myeloid markers, whereas others express T-cell markers. What is the most likely reason for this occurrence?

A) Two patient samples were mixed.
B) The diagnosis is bilineage acute leukemia.
C) There is a problem in the interpretation of the data.
D) The diagnosis is unilineage acute leukemia.