An Adult Patient with Systemic Mastocytosis and B-Acute Lymphoblastic Leukemia

Figure 2

Bone marrow trephine biopsy after induction with an extensive infiltration by spindle shaped mast cells as illustrated in H&E stain (a) as well as c-KIT immunostaining (b). Immunohistochemical expression for TDT also revealed the presence of infiltration by TDT (+) lymphoblasts (c), which however was lower than that observed initially.

(a)

(b)

(c)