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. 2021 May 27;21:627. doi: 10.1186/s12885-021-08392-5

Table 1.

Clinical characteristics of patients undergoing pure retroperitoneal laparoscopic radical nephrectomy and thrombectomy with delayed occlusion of the proximal inferior vena cava (DOPI) technique

Variables Value
Patients, n 17
Age, yr, mean ± SD (range) 52.2 ± 26.9 (18–79)
BMI, kg/m2, mean ± SD (range) 22.8 ± 4.4 (15.2–32.4)
Sex, n
 Male 9
 Female 8
Side, n
 Right 17
Clinical symptoms, n (%)
 No clinical symptoms 3
 Local symptoms 8
 Systemic symptoms 1
 Both 5
ASA score, n (%)
 1 2
 2 15
 Tumor diameter, cm, mean ± SD (range) 8.1 ± 3.4 (3.5–11)
 Lymph node involvement, n 7
 Distant metastasis, n 3
Mayo classification, n
 II 13
 III 4

SD standard deviation; BMI body mass index; ASA American Society of Anesthesiologists