Table 2. Chronology of primary tumors and at various sites.

Primary location	Metastasis first	Synchronous	Primary first [Min–Max] {Median (IQR)}
Stomach#	8	7	35 [1–180] {16 (10.5, 23.5)}
Colon	1	2	31 [4–120] {17 (12.0, 29.0)}
Breast	0	0	13 [6–186] {33 (12.0, 60.0)}
Uterus	1	3	1 [16]
LPB tract	2	0	2 [11, 23]
Appendix	0	4	0
Lung	0	0	1 [18]
Kidney	0	0	2 [20, 83]
Total	12	16	85 [1–186] {18 (11.5, 29.0)}

[Min–Max]: time interval (month) between primary tumors and MOTs. {Median (IQR)}: median time interval (month) between detection of primary tumor and metastasis. Marked with ^#: one patient had unilateral MOT first before primary gastric cancer and then had gastric surgery and unilateral MOT surgery before MOT was found 7 months later on the other side. Min, minimum; Max, maximum; IQR, interquartile range; MOT, metastatic ovarian tumor; LPB, liver-pancreas-biliary.