Lymphoscintigraphy and Selective Lymphatic Mapping in Patients With Invasive Vaginal Cancer
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 14
- 试验地点
- 2
- 主要终点
- Identification of sentinel lymph node(s) in patients with vaginal cancer using lymphoscintigraphy and intraoperative lymphatic mapping.
研究概览
简要总结
Primary Objectives:
- Determine the feasibility of using pretreatment lymphoscintigraphy to identify the sentinel lymph node(s) in patients with vaginal cancer dispositioned to receive radiation therapy.
- Determine the feasibility of using preoperative lymphoscintigraphy and intraoperative lymphatic mapping to identify the sentinel lymph node(s) in patients with vaginal cancer dispositioned to undergo surgery and bilateral lymph node dissection.
详细描述
The treatment of vaginal cancer is usually surgical removal of the vaginal tumor with removal of lymph nodes in the groin and/or pelvis. Patients who are not eligible to receive surgery usually receive radiation therapy.
Lymph nodes are a common site for the spread of vaginal cancer. Lymphatic mapping has been used in patients with other types of cancer to identify the "sentinel" lymph node. The sentinel lymph node is the lymph node believed to be at greatest risk for spread of the cancer. If the sentinel node does not contain cancer cells, then the remaining lymph nodes are almost always cancer free.
This research study will find out if the sentinel node concept can be applied to patients with vaginal cancer. The sentinel lymph node will be identified using a scan called "lymphoscintigraphy". A very small amount (less than one tenth of a teaspoon) of a radioactive material is injected around the edge of the tumor in the vagina, followed immediately by the scan. The scan is done in the Nuclear Medicine Department of M. D. Anderson before the patient has surgery or begins radiation therapy.
The dose of radiation injected into the vagina is much less than the dose received from a chest x-ray and therefore there are no special precautions needed after the injection. If the treatment plan is surgery, a second injection of the radioactive material may be necessary on the day of the operation because the radiation fades quickly. Patients who receive radiation therapy will not need a second injection. The radiation oncologist might use the information collected from the scan to help with treatment planning.
For patients having surgery, a special hand held instrument that measures radioactivity (similar to a Geiger counter) is used to help identify the location of the sentinel lymph node before and after the operation begins. Blue dye is also used to find the sentinel node. This requires the injection of up to a teaspoon of material called Isosulfan Blue around the tumor in the vagina. This is done while the patient is under anesthesia. The surgeon can then identify the sentinel node by its color (blue) and by its level of radioactivity (using the gamma counter).
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Patients must have invasive vaginal cancer, any histology, any stage.
- •Patients with prior excision of the primary are eligible.
- •Patients with recurrent vaginal cancer who have not had a prior inguinal or groin lymph node dissection.
- •Patients undergoing either surgical resection and assessment of inguinal or groin lymph nodes, radiation therapy and/or chemotherapy.
- •Patients must sign an IRB approved informed consent.
排除标准
- •Known allergy to triphenylmethane compounds.
- •Pregnancy.
- •Prior radiation therapy to the vagina, vulva, groin or pelvis.
- •Prior inguinal, femoral or pelvic lymphadenectomy.
- •Patients who are not good surgical candidates.
结局指标
主要结局
Identification of sentinel lymph node(s) in patients with vaginal cancer using lymphoscintigraphy and intraoperative lymphatic mapping.
时间窗: Preoperative and intraoperative, prior to radiation therapy, data collection
次要结局
未报告次要终点