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A type III sideroblast in dyserythropoiesis is demonstrated by:

In calculating the percentage of myeloblasts in the bone marrow, the following data are given. Erythroid nuclear precursors (E) = 65%, myeloblasts = 14%, other cells = 21%. Based on these numbers, what is the percentage of myeloblasts by the FAB classification?

The mucopolysaccharidoses are characterized by accumulations of unmetabolized __________ within lysosomes.

The most common and consistent nonrandom chromosomal aberration in the MDS, refractory anemia is deletion of the long arm of __________.

In Niemann–Pick disease there is an accumulation of __________ in histiocytes as well as cholesterol.

Autoimmune hemolytic anemia in CLL is characterized by the following:

A patient suspected of multiple myeloma presents with the following results: Hb 12 g/dL; corrected serum calcium, 11 mg/dL; one lytic bone lesion; and small M-spike by SPEP, with IgG

What is the definition of a solitary plasmacytoma?

Which variant of multiple myeloma produces a malignant clone of plasma cells that are too immature to secrete immunoglobulins and does not produce an M-spike by electrophoretic studies?

Multiple myeloma can be differentiated from primary plasma cell leukemia by which of the following?