Table III.

Estimated percentage of plasma cell infiltration by CD138 immunohistochemistry obtained bilaterally and unilaterally.

	Patients	Diagnosis	Core biopsies		Mean difference ± SEM	p-Value
			Right core	Left core
Bilateral	1	MM	20–30%	20–30%	−0.030 ±0.015	0.25
	2	MM	10%	10%
	3	MM	<5%	<5%
	4	MM	60–70%	70–80%
	5	MM	20–30%	20–30%
	6	SMM	50%	50%
	7	SMM	20–40%	30–50%
	8	SMM	10–20%	10–20%
	9	SMM	10–20%	10–20%
	10	SMM	10%	20%
Unilateral	11	MM	30%
	12	MM	90–100%
	13	MM	20–30%
	14	MM	30–40%
	15	MM	25%
	16	MM	5–15%
	17	SMM	30–40%
	18	SMM	10–20%
	19	SMM	60–70%
	20	SMM	10–15%

MM, multiple myeloma; SMM, smoldering multiple myeloma; SEM, standard error of the mean.