Guilherme Lima

Johns Hopkins Medicine, Baltimore, MD, USA

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Publications (4)11.03 Total impact

  • Article: Oncologic efficacy of laparoscopic RPLND in treatment of clinical stage I nonseminomatous germ cell testicular cancer.
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    ABSTRACT: To assess the oncologic efficacy of laparoscopic retroperitoneal lymph node dissection (LRPLND) for clinical Stage I nonseminomatous germ cell tumors (NSGCTs) in a large multi-institutional series. LRPLND is emerging as a less-invasive alternative in the adjuvant surgical treatment of patients with testicular cancer. The medical records of 120 patients with clinical Stage I NSGCT who underwent LRPLND at one of four institutions in the United States were retrospectively analyzed. All patients had at least 12 months of postoperative follow-up. The modified template dissection was performed at all centers. For the purposes of analysis, the patients were divided into two groups: those with consonant clinical and pathologic Stage I disease (n = 74, 62%) and those upstaged to pathologic Stage II (n = 46, 38%). No patient, including those upstaged to pathologic Stage II disease undergoing surveillance (n = 10), presented with retroperitoneal recurrence after LRPLND. Two patients with consonant pathologic Stage I developed pelvic recurrence that was outside the standard dissection template. The median follow-up for the patients with pathologic Stage I was 28.5 months (range 12 to 144) and was 29 months (range 12 to 108) for those with pathologic Stage II. In this group of patients with clinical Stage I NSGCT, management at multiple institutions that included LRPLND provided excellent intermediate results, paralleling those historically achieved with open lymph node dissection.
    Urology 01/2008; 70(6):1168-72. · 2.43 Impact Factor
  • Article: Leiomyomas of the kidney: emphasis on conservative diagnosis and treatment.
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    ABSTRACT: Leiomyomas are benign mesenchymal tumors that rarely occur in the kidney. We present the reports of three renal leiomyomas diagnosed and treated at our institution during the past 10 years. On the basis of our experience, preoperative diagnosis may be possible through image-guided percutaneous biopsy, and conservative treatment with either expectant management or minimally invasive nephron-sparing surgery should always be considered.
    Urology 01/2006; 66(6):1319. · 2.43 Impact Factor
  • Article: Long-term survival analysis after laparoscopic radical nephrectomy.
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    ABSTRACT: This report assesses the long-term oncological efficacy of laparoscopic radical nephrectomy compared with open radical nephrectomy in patients with clinically localized renal cell carcinoma. We analyzed the data from 121 patients who underwent radical nephrectomy between 1991 and 1999 for clinical tumor stage T1/2 N0M0. The medical records of all patients were retrospectively reviewed with emphasis on tumor recurrence and survival. Statistical comparison was performed using Kaplan-Meier analysis. The median followup was 73 months for the laparoscopic group and 80 months for the open group. Of the 67 patients who underwent laparoscopic surgery, 53 survived without any recurrence of disease, 2 are currently alive with metastasis, 2 died of metastatic disease in months 12 and 17, and 10 patients died without any disease recurrence. Laparoscopic port site metastasis did not develop in any patients. Of the 54 who underwent open surgery, 34 survived without any recurrence of disease, 1 currently has metastasis, 6 died of metastasis within 17 to 74 months, and 13 died without any disease recurrence. A comparison of the 5 and 10-year disease-free survival rates of the laparoscopic and open groups revealed no significant differences. In addition, the 5 and 10-year cancer specific and actuarial survival rates were not significantly different. Based on long-term followup, our evaluation confirmed for clinical tumor stage T1/2 N0M0 that laparoscopic radical nephrectomy is oncologically equivalent to open radical nephrectomy.
    The Journal of Urology 11/2005; 174(4 Pt 1):1222-5. · 3.75 Impact Factor
  • Article: Laparoscopic retroperitoneal lymph node dissection: duplication of open technique.
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    ABSTRACT: Laparoscopic retroperitoneal lymph node dissection has been used to stage germ cell testicular cancer. Since its initial description, this minimally invasive procedure has evolved into a therapeutic operation that adheres to established strict oncologic principles. A modified template dissection that fully duplicates the open technique is now routinely performed at our institution. We describe and show in the accompanying video segments a laparoscopic modified template dissection.
    Urology 04/2005; 65(3):575-7. · 2.43 Impact Factor