Serum Total Tryptase Level Confirms Itself as a More Reliable Marker of Mast Cells Burden in Mast Cell Leukaemia (Aleukaemic Variant)

Figure 1

Bone marrow smears at the time of diagnosis (stained by May-Grunwald and Giemsa). Atypical mast cells presented alterations in size and in shape; they presented often with few or numerous metachromatic granules and often contained bilobed nucleus.