Table 5. Primary tumor origins of MOTs with different US subtypes.

Subtype	Stomach	Colon	Breast	Uterus	LPB tract	Appendix	Lung	Kidney	Total
A	8	28	2	3	3	2	0	0	46
B	23/17*	6/2*	2	3	1/1*	1/1*	1	2	39/21*
C	42/33*	9/4*	3	0	2	3/2*	0	0	59/39*
Total	73/50*	43/6*	7	6	6/1*	6/3*	1	2	144/60*

Marked with* cases of SRCC. MOTs, metastatic ovarian tumors; US, ultrasound; LPB, liver-pancreas-biliary; SRCC, signet-ring cell carcinoma.