Is a single portal venous phase in contrast-enhanced CT sufficient to detect metastases or recurrence in clear cell renal cell carcinoma? – a single-center retrospective study

Table 5 Inter-reader agreement depending on metastatic lesions

	Radiologist #1	Radiologist #2	Radiologist #3	Radiologist #4	Fleiss‘ Kappa κ	p-value
Pulmonary metastases [n]	31	24	27	27	0.60 ± 0.05	<0.001
Lymph node metastases [n]	26	20	24	23	0.61 ± 0.05	<0.001
Osseous metastases [n]	16	16	17	16	0.76 ± 0.05	<0.001
Hepatic metastases [n]	13	14	15	15	0.66 ± 0.05	<0.001
Adrenal metastases [n]	12	8	6	7	0.63 ± 0.05	<0.001
Peritoneal metastases [n]	9	8	8	8	0.83 ± 0.06	<0.001
Local recurrences [n]	10	10	9	9	0.69 ± 0.05	<0.001
Contralateral kidney [n]	6	6	5	5	0.76 ± 0.04	<0.001
Soft tissue metastases [n]	7	6	8	7	0.69 ± 0.05	<0.001
Pancreatic metastases [n]	6	6	6	6	0.66 ± 0.05	<0.001

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