Bone marrow biopsy with extensive infiltrate of neoplastic mast cells (hematoxylin and eosin, 100x)Bone marrow biopsy with extensive infiltrate of neoplastic mast cells (hematoxylin and eosin, 100x)
Bone marrow aspirate clot preparation showing infiltrate of atypical mast cells (hematoxylin and eosin, 200x)Bone marrow aspirate clot preparation showing infiltrate of atypical mast cells (hematoxylin and eosin, 200x)
Neoplastic mast cells demonstrating CD117 positivity in bone marrow aspirate clot preparation (100x)Neoplastic mast cells demonstrating CD117 positivity in bone marrow aspirate clot preparation (100x)
Bone marrow aspirate clot preparation highlighting infiltrate of atypical mast cells (Giemsa, 400x)Bone marrow aspirate clot preparation highlighting infiltrate of atypical mast cells (Giemsa, 400x)
Bone marrow aspirate smear showing spectrum of atypical mast cell morphologies including promastocytes and metachromatic blasts (Wright-Giemsa, 1000x)Bone marrow aspirate smear showing spectrum of atypical mast cell morphologies including promastocytes and metachromatic blasts (Wright-Giemsa, 1000x)
Bone marrow aspirate smear showing multilineage dysplasia and presence of numerous ring sideroblasts (Wright-Giemsa and Iron stain, 1000x)Bone marrow aspirate smear showing multilineage dysplasia and presence of numerous ring sideroblasts (Wright-Giemsa and Iron stain, 1000x)
Liver biopsy with extensive infiltrate by neoplastic mast cells (hematoxylin and eosin, 40x)Liver biopsy with extensive infiltrate by neoplastic mast cells (hematoxylin and eosin, 40x)
Liver biopsy: Neoplastic cells demonstrating CD117 positivity (100x)Liver biopsy: Neoplastic cells demonstrating CD117 positivity (100x)
Liver biopsy: Neoplastic cells demonstrating CD25 positivity (100x)Liver biopsy: Neoplastic cells demonstrating CD25 positivity (100x)