Synchronous and Metachronous Breast Malignancies: A Cross-Sectional Retrospective Study and Review of the Literature

Table 6

Description of the studies included in our meta-analysis.^∗Mean, ^∗∗median, and ^¶follow-up divided between SBC, MBC, and UBC.

Study	MBC/SBC	MBC after (months)	Follow-up years	Study design	Years considered	Follow-up until	Months between metachronous
Heron et al. 2000 [15]	MBC/SBC	12	5/7/3^∗∗¶	Hosp.-based	60/95	′95	44
Polednak 2003 [26]	SBC	3	—	Pop.-based	95/99	′00	NA
Takahashi et al. 2005 [19]	MBC/SBC	6	7^∗	Hosp.-based	60/01	′01	113
Verkooijen et al. 2007 [18]	MBC/SBC	6	7^∗∗	Pop.-based	70/02	′02	80
Kuo et al. 2009 [17]	MBC/SBC	6	8^∗	Hosp.-based	90/99	′04	36
Vuoto et al. 2010 [7]	MBC/SBC	12	8/13/---^∗¶	Hosp.-based	70/07	′07	81
Beckmann et al. 2011 [25]	MBC/SBC	3	6^∗	Pop.-based	97/07	′09	34