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ORIGINAL ARTICLE
Year : 2016  |  Volume : 32  |  Issue : 2  |  Page : 124-131

Is surgeon intuition equivalent to models of operative complexity in determining the surgical approach for nephron sparing surgery?


Department of Genitourinary Oncology, Moffitt Cancer Center, Tampa, Florida, USA

Correspondence Address:
Pranav Sharma
Department of Genitourinary Oncology, Moffitt Cancer Center, Tampa, Florida
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-1591.179191

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Introduction: The choice of approach for partial nephrectomy often depends on surgical complexity. We aimed to determine if surgeon intuition was equivalent to markers of operative complexity, such as RENAL nephrometry and Mayo adhesive probability (MAP) score, in determining the surgical approach for partial nephrectomy (PN). Materials and Methods: We retrospectively identified 119 masses removed for suspected renal cell carcinoma from January 2012 to September 2014 by a single surgeon who intuitively chose treatment with one of three surgical approaches: Open PN (OPN), robotic-assisted transperitoneal PN (RATPN), or robotic-assisted retroperitoneal PN (RARPN). Clinicodemographic characteristics, pathological features, and postoperative outcomes were compared for each approach. Logistic regression was performed to identify independent predictors of open surgical resection, our primary endpoint. Results: Fifty-four tumors (45%) were resected via OPN, 40 (34%) via RATPN, and 25 (21%) via RARPN. OPN was performed in patients with more comorbidities (P = 0.02), lower baseline renal function (P < 0.01), more solitary kidneys (P < 0.01), and more multifocal disease (P < 0.01). Patients undergoing OPN had higher median nephrometry scores compared to RATPN and RARPN patients (8 vs. 7 vs. 7, respectively; P = 0.03), but MAP scores were no different among all three groups (P = 0.36). On multivariate analysis, higher nephrometry scores (odds ratio: 1.41, 95% confidence interval: 1.10-1.81; P = 0.007) were independently associated with open surgical resection. Nephrometry score was predictive of OPN (area under curve = 0.64, P = 0.01) with a score of 6.5 having the highest sensitivity and specificity (76% and 42%, respectively). Conclusions: RENAL nephrometry score was associated with surgical approach intuitively chosen by an experienced surgeon, but the presence of adherent perinephric fat did not correlate with decision-making.


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