What cells may demonstrate a coarse block pattern of activity with the PAS stain?

Question

Quizplus · Accepted Answer

Malignant lymphoblasts can demonstrate a coarse block pattern of activity with the PAS stain due to the accumulation of glycogen and other carbohydrates within the cytoplasm. This is a characteristic feature of lymphoblasts in acute lymphoblastic leukemia (ALL). Normal lymphocytes, mature neutrophils, and normal erythroid precursors are not expected to exhibit this pattern of activity with PAS stain.

What Cells May Demonstrate a Coarse Block Pattern of Activity