Table 2. Effects of involvement of... | American Society of Hematology

Table 2.

Effects of involvement of marrow by neoplastic cells on percent hematogones

Percent bone marrow hematogones
Category of marrow involvement	All specimens			Density gradient separation–processed			Ammonium chloride lysis–processed
Category of marrow involvement	Mean	SD	Range	Mean	SD	Range	Mean	SD	Range
No involvement	1.99	4.92	0-65	2.76	6.48	0-65	1.15	1.90	0-12.4
	(n = 432)			(n = 225)			(n = 207)
< 25% neoplastic cells	1.53	2.66	0-15.7	1.79	2.80	0-15.7	1.27	2.51	0-11.4
	(n = 114)			(n = 57)			(n = 57)
25%-49% neoplastic cells	0.72	2.33	0-12.0	0.88	2.65	0-12	0.56	2.01	0-9.3
	(n = 42)			(n = 21)			(n = 21)
50% or more neoplastic cells	0.14	0.35	0-2.0	0.19	0.43	0-2.0	0.08	0.16	0-0.7
	(n = 74)			(n = 42)			(n = 32)

Percent bone marrow hematogones
Category of marrow involvement	All specimens			Density gradient separation–processed			Ammonium chloride lysis–processed
Category of marrow involvement	Mean	SD	Range	Mean	SD	Range	Mean	SD	Range
No involvement	1.99	4.92	0-65	2.76	6.48	0-65	1.15	1.90	0-12.4
	(n = 432)			(n = 225)			(n = 207)
< 25% neoplastic cells	1.53	2.66	0-15.7	1.79	2.80	0-15.7	1.27	2.51	0-11.4
	(n = 114)			(n = 57)			(n = 57)
25%-49% neoplastic cells	0.72	2.33	0-12.0	0.88	2.65	0-12	0.56	2.01	0-9.3
	(n = 42)			(n = 21)			(n = 21)
50% or more neoplastic cells	0.14	0.35	0-2.0	0.19	0.43	0-2.0	0.08	0.16	0-0.7
	(n = 74)			(n = 42)			(n = 32)

n indicates number of bone marrow specimens.