Rate of incisional hernia after minimally invasive and open surgery for renal cell carcinoma: a nationwide population-based study

Figures & data

Table 1. Baseline data among patients treated with surgery for renal cell carcinoma either with open or minimally invasive surgical technique that have been diagnosed or treated for incisional hernia in Sweden, 2005–2015.

	Open	Minimally invasive	Total
Gender
Male	3,243 (62%)	759 (63%)	4,002 (62%)
Female	1,973 (38%)	442 (37%)	2,415 (38%)
Total	5,216	1,201	6,417
Age (years), median (IQR)	67 (59, 73)	66 (57, 73)	66 (58, 73)
Males	66 (58, 72)	66 (60, 75)	66 (58, 72)
Females	68 (57, 73)	66 (57, 74)	68 (60, 74)
Surgical Technique
Radical Nephrectomy	3,802 (73%)	892 (74%)	4,694 (73%)
Partial Nephrectomy	1,387 (27%)	287 (24%)	1,674 (26%)
Missing	27 (0.5%)	22 (2%)	46 (0.8%)
Total	5,216	1,201	6,417
Surgical approach
Transabdominal	4,434 (85%)	1,030 (86%)	5,464 (85%)
Extraperitoneal	777 (15%)	150 (13%)	927 (15%)
Missing	5 (0.1%)	21 (2%)	26 (0.4%)
Total	5,216	1,201	6,417
Tumor side
Left	2,603 (50%)	600 (50%)	3,203 (50%)
Right	2,610 (50%)	601 (50%)	3,211 (50%)
Missing	3 (0.1%)	.	3 (0%)
Total	5,216	1,201	6,417
T-stage
T1	2,572 (49%)	933 (78%)	3,505 (55%)
T2	1,032 (20%)	93 (8%)	1,125 (18%)
T3	1,460 (28%)	167 (14%)	1,627 (25%)
T4	133 (3%)	3 (0.2%)	136 (2%)
Missing	19 (0.4%)	5 (0.4%)	24 (0.4%)
Total	5,216	1,201	6,417
Incisional hernia
Males	71 (57%)	12 (75%)	83 (59%)
Females	53 (43%)	4 (25%)	57 (41%)
Total	124	16	140

Table 2. Multivariable Cox proportional hazard analyses with diagnosis and/or surgery for incisional hernia as the endpoint among patients treated with surgery for renal cell carcinoma either with open or minimally invasive surgical technique in Sweden, 2005–2015.

	All^a	Minimally invasive^a	Open^a
All	HR (95% CI)	HR (95% CI)	HR (95% CI)
Gender
Male	1.00	1.00	1.00
Female	1.16 (0.82–1.64)	0.75 (0.17–3.36)	0.78 (0.51–2.13)
Surgical technique
Partial Nephrectomy	1.00	1.00	1.00
Radical Nephrectomy	0.90 (0.58–1.40)	1.38 (0.87–1.85)	1.30 (0.90–1.89)
Surgical approach
Extraperitoneal	1.00	1.00	1.00
Transabdominal	1.17 (0.70–1.98)	0.75 (0.17–3.36)	1.22 (0.70–2.13)
Tumor side
Right	1.00	1.00	1.00
Left	1.31 (0.93–1.85)	1.24 (0.33–4.61)	0.86 (0.54–1.38)
Surgical method
Minimally invasive technique	1.00
Open technique	1.74 (1.02–2.98)

^aAdjusted for T-stage and age.

Figure 1. Cumulative rate of incisional hernia after open and minimally invasive surgery for renal cell carcinoma in Sweden, 2005–2015.