Fig. 1

Examples of RENAL nephrometry scores. Total body contrast-enhanced multidetector CT (a, b) performed for clinical suspicion of systemic lymphoproliferative disease in a healthy 61-year-old woman led to incidental detection of a 2.5-cm, vascularised, partially (<50 %) exophytic mass at the middle third of the right kidney (arrows), consistent with T1 stage renal cell carcinoma (RCC). Nephrometry resulted 1 + 2 + 2 + p + 3 (8p). The patient underwent laparoscopic nephron-sparing surgery (L-NSS) complicated by haematoma (see Fig. 5). Multiphase CT-urography (c–e) in a 55-year-old man confirmed ultrasound detection of a 43-mm, inhomogeneously enhancing, left-sided RCC. The lesion appeared partially exophytic, crossed the inferior polar line (d) and touched the lower pole calyx (e). Nephrometry score was 2 + 2 + 3 + a + 2 (9a). The patient successfully underwent laparoscopic partial nephrectomy (L-PN)