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Laparoscopic Sentinel Lymph Node Mapping with Indocyanine Green Using the iSpies Platform: Initial Experience Argentina.
Journal of Minimally Invasive Gynecology 2018 March
STUDY OBJECTIVE: To demonstrate the initial experience in Argentina using the iSpies indocyanine green (ICG) platform in sentinel lymph node mapping in patients with early-stage cervical cancer.
DESIGN: Step-by-step demonstration of the technique using a video and pictures (educative video) (Canadian Task Force classification III).
SETTING: Laparoscopic and robotic sentinel lymph node mapping using ICG has been shown to be safe and feasible; however, in developing countries, the opportunities to use fluorescent imaging through a minimally invasive approach are very limited, given the cost restrictions of acquiring the near-infrared technology and the fluorescent dyes.
INTERVENTION: A 47-year-old woman presented with a stage IB1 squamous cervical cancer. Physical examination revealed a 1.5-cm tumor without evidence of parametrial involvement. Magnetic resonance imaging did not show any evidence of metastatic disease. The patient underwent laparoscopic radical hysterectomy with sentinel lymph node mapping. On laparoscopic exposure of the pelvic spaces, a cervical injection of ICG (1 mL superficial and deep) was administered using a spinal needle at the 3 o'clock and 9 o'clock positions. Sentinel lymph node mapping was then performed using the ICG (Pulsion Medical Systems, Feldkirchen, Germany) and an iSpies near-infrared camera (Karl Storz Endoskope, Tuttlingen, Germany). Bilateral sentinel lymph nodes were detected on the left external iliac artery and in the right obturator space. Both were confirmed ex vivo. The total operative time was 170 minutes. No intraoperative or postoperative complications were reported, and the patient was discharged at 48 hours after surgery. Estimated blood loss was minimal. Sentinel lymph node mapping alone is not the standard of care in our institution, and thus bilateral lymphadenectomy was performed. Ultrastaging is routinely performed when a sentinel lymph node is evaluated. Final pathology revealed a tumor confined to the cervix, with tumor-free margins, and a total of 10 lymph nodes that were negative for any evidence of disease. Disadvantages of this technology compared with the Pinpoint ICG system (Novadaq Technologies; Bonita Springs, FL) is the lack of simultaneous white vision and fluorescence ICG detection, and the to manually change normal vision to infrared vision. An advantage of the Storz iSpies system is its availability in our country, considering that the technology developed by Novadaq is not yet approved in Argentina.
CONCLUSION: Although ICG sentinel lymph node mapping is becoming a standard of care [1,2], a lack of ICG dye or laparoscopic near-infrared technologies could be a deterrent to its use in developing countries. A focus on expanding this technology in countries with limited resources would allow patients the opportunity to avoid the morbidity associated with full lymphadenectomy.
DESIGN: Step-by-step demonstration of the technique using a video and pictures (educative video) (Canadian Task Force classification III).
SETTING: Laparoscopic and robotic sentinel lymph node mapping using ICG has been shown to be safe and feasible; however, in developing countries, the opportunities to use fluorescent imaging through a minimally invasive approach are very limited, given the cost restrictions of acquiring the near-infrared technology and the fluorescent dyes.
INTERVENTION: A 47-year-old woman presented with a stage IB1 squamous cervical cancer. Physical examination revealed a 1.5-cm tumor without evidence of parametrial involvement. Magnetic resonance imaging did not show any evidence of metastatic disease. The patient underwent laparoscopic radical hysterectomy with sentinel lymph node mapping. On laparoscopic exposure of the pelvic spaces, a cervical injection of ICG (1 mL superficial and deep) was administered using a spinal needle at the 3 o'clock and 9 o'clock positions. Sentinel lymph node mapping was then performed using the ICG (Pulsion Medical Systems, Feldkirchen, Germany) and an iSpies near-infrared camera (Karl Storz Endoskope, Tuttlingen, Germany). Bilateral sentinel lymph nodes were detected on the left external iliac artery and in the right obturator space. Both were confirmed ex vivo. The total operative time was 170 minutes. No intraoperative or postoperative complications were reported, and the patient was discharged at 48 hours after surgery. Estimated blood loss was minimal. Sentinel lymph node mapping alone is not the standard of care in our institution, and thus bilateral lymphadenectomy was performed. Ultrastaging is routinely performed when a sentinel lymph node is evaluated. Final pathology revealed a tumor confined to the cervix, with tumor-free margins, and a total of 10 lymph nodes that were negative for any evidence of disease. Disadvantages of this technology compared with the Pinpoint ICG system (Novadaq Technologies; Bonita Springs, FL) is the lack of simultaneous white vision and fluorescence ICG detection, and the to manually change normal vision to infrared vision. An advantage of the Storz iSpies system is its availability in our country, considering that the technology developed by Novadaq is not yet approved in Argentina.
CONCLUSION: Although ICG sentinel lymph node mapping is becoming a standard of care [1,2], a lack of ICG dye or laparoscopic near-infrared technologies could be a deterrent to its use in developing countries. A focus on expanding this technology in countries with limited resources would allow patients the opportunity to avoid the morbidity associated with full lymphadenectomy.
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