Table 1.

Summarized findings (where applicable findings reported reflect radiological/pathological findings)

Specimen	Resection technique	Subtype	WHO/ISUP nuclear grading	Maximal tumour diameter (mm)	Surgical margin	Smallest resection margin (mm)	Pseudocapsule present	Continuity pseudocapsule	Extra pseudocapsulair extension	Follow-up (months)4	Local recurrence
I	Resection	Oncocytoma	n.a.	20/20	Neg/Neg	9.0/1.5	Yes/No	Yes/n.a.	No/n.a.	0	No
II	Enucleoresection	Oncocytoma	n.a.	21/15	Neg/Neg	2.3/1.2	No/No	n.a./n.a.	n.a./n.a.	345	No
III	Resection	Clear cell	II	36/50	Pos/Pos	n.a./n.a.	Yes/Yes	No/No	No/No	33	No
IV1	Resection	Chromophobe	n.a.	x/x	x/x	x/x	x/x	x/x	x/x	27	No
V	Pure enucleation	Clear cell	II	9.7/5.0	Neg/Neg	3.7/0.5	Yes/Yes	Yes/Yes	No/No	4	No
VI	Resection	Clear cell	III	21/20	Neg/Neg	0.2/0.6	Yes/Yes	Yes/No (70% intact)	No/Yes	4	No
VII2	Resection	Benign cyst	n.a.	x/x	x/x	x/x	x/x	x/x	x/x	21	No
VIII	Hybrid enucleation	Papillary type I	II	59/70	Neg/Neg	3.0/ 0.3	Yes/No	Yes/n.a.	No/n.a.	23	No
IX	Resection	Clear cell	II	31/30	Pos/Neg	n.a./0.5.	Yes/Yes	No/No	Yes/Yes	25	No
X	Pure enucleoresection	Clear cell	II	23/24	Neg/Neg	1.6/0.4	Yes/Yes	Yes/Yes	No/No	25	No
X3	Resection	Papillary type I	II	11/10	Pos/Neg	n.a./0.5.	Yes/Yes	No/No	Yes/Yes	25	No

1. Fragmented specimen with disintegration of the resection margin, therefore surgical margins and pseudocapsule could not be assessed on MRI and histopathology

2. Only a small benign cyst was visualized on ex vivo MRI, pathology report confirmed this finding. Patient was excluded from further analysis

3. Incidentally detected second tumour in specimen X

4. Measured from the date of surgery until the last moment of follow-up imaging of the affected kidney

5. Follow-up performed for second incidentaloma detected after surgery

WHO/ISUP World Health Organization/International Society of Urological Pathology