Table 3.

MRI-based characteristics of study patients

		OTFG (n = 32)	OGCT (n = 21)	Univariate analysis (p)	LASSO estimate	Κ-value
Lesion size (cm), mean ± SD		12.1 ± 5.3	11.8 ± 7.5	0.331 a	-0.071	0.927 d
Morphology				0.472 a	-0.034	0.758
Multiple nodular		10 (31.3%)	8 (38.1%)
Oval		13 (40.6%)	9 (42.9%)
Shallow lobulated		9 (28.1%)	4 (19.0%)
Capsule				0.004 b	0.033	0.903
Absent		13 (40.6%)	1 (4.8%)
Present		19 (59.4%)	20 (95.2%)
Solid and cystic components				0.013 a	0.000	0.942
Solid		13 (40.6%)	1 (4.8%)
Partly cystic		7 (21.9%)	8 (38.1%)
Solid and cystic		8 (25.0%)	5 (23.8%)
Partly solid		4 (12.5%)	7 (33.3%)
Peripheral cystic areas				< 0.001 b	0.097	0.762
Absent		16 (50.0%)	1 (4.8%)
Present		16 (50.0%)	20 (95.2%)
Cyst size (cm), mean ± SD		4.2 ± 5.9	5.0 ± 4.5	0.135 a	0.000	0.985 d
Cystic pattern				0.014 a	0.000	0.903
None		13 (40.6%)	1 (4.8%)
Mainly large		12 (37.5%)	11 (52.4%)
Mainly small		3 (9.4%)	6 (28.6%)
Mixed		4 (12.5%)	3 (14.3%)
Hemorrhagic component				0.004 c	0.000	0.958
Absent		26 (81.2%)	8 (38.1%)
Present		6 (18.8%)	13 (61.9%)
Endometrial hyperplasia				0.671 b	0.002	0.899
Absent		29 (90.6%)	3 (9.4%)
Present		18 (85.7%)	3 (14.3%)
Uterine fibroid or adenomyosis				0.739 b	0.000	0.801
Absent	11 (34.4%)		21 (42.9%)
Present	9 (65.6%)		12 (57.1%)
Pelvic fluid				0.013 a	0.000	0.828
None	2 (6.3%)		0 (0.0%)
Small	8 (25.0%)		15 (71.4%)
Large	22 (68.8%)		6 (28.6%)

Except where otherwise indicated, data are the number (%) of patients. LASSO least absolute shrinkage and selection operator, OTFG ovarian thecoma-fibroma group, OGCT ovarian granulosa cell tumor, SD standard deviation

^aData were tested using the Mann–Whitney U test

^bData were tested using Fisher’s exact test

^cData were tested using the chi-squared test

^dThe intra-class correlation (ICC) was calculated instead because of continuous variables