TABLE 1.

Demographic and Medical Characteristics of 31 Patients Who Underwent Cross-Sectional Imaging Before Thymectomy

Characteristic	Total (n = 31)	True Hyperplasia (n = 18)	Lymphoid Hyperplasia (n = 13)	P
Age (y), median (range)	37 (20–68)	43 (25–68)	35 (20–68)	0.25
Sex				0.24
Male	9	7	2
Female	22	11	11
Medical conditions associated  with hyperplasia
Myasthenia gravis	10	3a	7	0.05b
Thyroid disease	4	2	2	1.00
Prior steroid use	6	4	2	1.00

Note—Except where noted otherwise, data are number of patients.

^aAll three patients had a history of steroid use.

^bStatistically significant.