Multifocal Renal Cell Carcinoma: Clinicopathologic Features and Outcomes for Tumors ≤4 cm

Table 1

Incidence of multifocal RCC in prior series. ccRCC = clear cell renal cell carcinoma; pRCC = papillary renal cell carcinoma; NA = not available.

Author	Year	Total Patients	Multifocal (%)	Median Tumor	≤4 cm (%)
				Size (cm)
Richstone	2004	1071	57 (5.3)	5.0	16%
Dimarco	2004	2373	101 (4.3)	4.5 ccRCC	NA
				4.0 pRCC
Lang	2004	255	37 (14.5)	NA	12.9%
Junker	2002	372	61 (16.4)	NA	NA
Karayiannis	2002	56	10 (17.8)	7.5	30%
Schlichter	2000	281	48 (17.1)	NA	NA
Baltaci	2000	103	22 (21.4)	7.5	24.1%
Wunderlich	1999	260	36 (13.9)	NA	NA