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https://hdl.handle.net/10316/106075
Título: | Impact of Positive Surgical Margins After Partial Nephrectomy | Autor: | Carvalho, João André Mendes Nunes, Pedro Silva, Edgar Tavares da Parada, Belmiro Jarimba, Roberto Moreira, Pedro Retroz, Edson Caetano, Rui Sousa, Vítor Cipriano, Augusta Figueiredo, Arnaldo |
Palavras-chave: | Laparoscopy; Nephrectomy; Positive surgical margins | Data: | Out-2020 | Editora: | Elsevier | Título da revista, periódico, livro ou evento: | European Urology Open Science | Volume: | 21 | Resumo: | Background: The impact of positive surgical margins (PSMs) after partial nephrectomy (PN) is controversial. Objective: To evaluate the risk factors for a PSM and its impact on overall survival. Design, setting, and participants: This is a retrospective study of 388 patients were submitted to PN between November 2005 and December 2016 in a single centre. Two groups were created: PSM and negative surgical margin (NSM) after PN. A p value of <0.05 was considered significant. Outcome measurements and statistical analysis: Relationships with outcome were assessed using univariable and multivariable tests and log-rank analysis. Results and limitations: The PSM rate was 3.8% (N = 16). The mean age at the time of surgery (PSM group: 64.1 11.3 vs NSM group: 61.8 12.8 yr, p = 0.5) and the mean radiological tumour size (4.0 1.5 vs 3.4 1.8 cm, p = 0.2) were similar. Lesion location (p = 0.3), surgical approach (p = 0.4), warm ischaemia time (p = 0.9), and surgery time (p = 0.06) had no association with PSM. However, higher surgeon experience was associated with a lower PSM incidence (2.6% if 30 PNs vs 9.6% if <30 PNs; p = 0.02). Higher operative blood loss (p = 0.02), higher-risk tumours (p = 0.03), and larger pathological size (p = 0.05) were associated with an increase in PSM. In the PSM group, recurrence rate (18.7% vs 4.2%, p = 0.007) and secondary total nephrectomy rate (25% vs 4.4%, p < 0.001) were higher. However, overall survival was similar. Multivariate analysis revealed that high-risk tumour (p = 0.05) and low experience (p = 0.03) could predict a PSM. Limitations include retrospective design and reduced follow-up time. Conclusions: PSMs were mainly associated with high-risk pathological tumour (p = 0.05) and low-volume surgeon experience. Recurrence rate and need for total nephrectomy were higher in that group, but no impact on survival was noticed. Patient summary: The impact of positive surgical margins (PSMs) after partial nephrectomy is a matter of debate. In this study, we found that PSMs were mainly associated with aggressive disease and low surgeon experience. | URI: | https://hdl.handle.net/10316/106075 | ISSN: | 26661683 | DOI: | 10.1016/j.euros.2020.08.006 | Direitos: | openAccess |
Aparece nas coleções: | FMUC Medicina - Artigos em Revistas Internacionais |
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1-s2.0-S2666168320353155-main.pdf | 336.68 kB | Adobe PDF | Ver/Abrir |
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