Table 2. Characteristics of all the patients.

Variable	Patients	Benign skeletal lesions	Malignant skeletal lesions
Total number of patients	69	49	52
Gender
Male	30	24	21
Female	39	25	31
Age
>67 years	27	19	30
≤67 years	42	30	22
Primary tumor
Breast cancer	15	13	11
Lung cancer	26	18	22
Prostate cancer	14	9	10
Thyroid cancer	8	7	3
Others	6	2	6
Location of skeletal lesions
Thoracic cage	12	14	10
Spine bone	50	22	28
Pelvic bone	39	13	14