Open Partial Nephrectomy with Zero Ischaemia Using a Supra 12th Rib Miniflank Incision: A Minimally Invasive Open Approach for Small Renal Masses

Table 1

Demographics, tumour characteristics, renal nephrometry score, estimated blood loss, and complications.

Benign		Duration
Oncocytoma	8	<1 hr	4
Cystic nephroma	5	1-2 hrs	51
Renal cyst	9	2-3 hrs	14
Angiomyolipoma	2	3-4 hrs	1
	24	<4 hrs	1
Malignant		Mean	72 minutes
Clear cell	39	Estimated blood loss
Chromophobe	6	<500 ml	42
Papillary type 1	2	5–1000	23
	47	1000–2500	6
Fuhrman/nuclear grade		Mean	608 ml
Grade 1	10	Clavien–Dindo complications
Grade 2	24	Grade 2	8
Grade 3	13	Grade 3a	1
Grade 4	0	Total	9
	47	Size
RENAL nephrometry score		<4 cm	46
4–6	15	4–7 cm	24
7–9	26	>7 cm	1
10–12	30	Mean	3.69 cm