A CT-based radiomics nomogram for distinguishing between benign and malignant bone tumours

Cancer Imaging

Table 2 Demographic data and CT morphological features

Feature	Benign	Malignant	P value
No. of patients	88	118
Gender			0.087
Male	56	61
Female	32	57
Age (mean ± SD)	47.77 ± 19.88	30.30 ± 18.93	< 0.001
< 50 years	69	53
≥ 50 years	19	65
Site			0.378
Head and neck	15	13
Upper extremity	14	20
Trunk wall	1	9
Spine	8	42
Lower extremity	50	34
Location			0.601
Within the medullary cavity	49	70
Within the cortex	39	48
Number			0.422
Solitary	75	105
Multiple	13	13
Expansion			0.012
< 1	75	83
> 1	13	35
Margin			< 0.001
Well-defined	71	49
Ill-defined	17	69
Ground glass appearance			0.038
-	68	104
+	20	14
Rim sclerosis			< 0.001
-	43	98
+	45	20
Cortical integrity			< 0.001
-	63	33
+	25	85
Residual bony ridge			0.001
-	65	61
+	23	57
Periosteal reaction			0.036
-	79	93
+	9	25
Cortical destruction
-	78	103	0.769
+	10	15
Soft tissue mass			< 0.001
-	74	62
+	14	56
Adjacent tissues involvement			0.041
-	74	85
+	14	33

ISSN: 1470-7330