Lymphatic Metastasis

The goal of this clinical trial is to learn how to successfully introduce a new method for finding the sentinel lymph node during breast cancer surgery into routine hospital care. The method uses a dye called indocyanine green (ICG) and a special camera to see the lymph node. The sentinel lymph node is the first lymph node that cancer is likely to spread to. In the Netherlands, about 1 in 7 women develops breast cancer. Finding out whether cancer has spread to the lymph nodes is important for planning treatment and predicting outcomes. The current standard method for sentinel lymph node biopsy (SLNB) uses a radioactive tracer called radioisotope technetium-labeled (99mTc)-nanocolloid. While accurate, this method has several drawbacks: it exposes patients to radioactivity, requires an extra hospital visit or travel to another hospital due to limited nuclear medicine facilities, and is not sustainable. Surgeries using 99mTc can only take place on certain days due to logistical issues, and the signal from 99mTc can be disturbed by the tumor marker placed in the breast. ICG works as well as 99mTc for SLNB and offers several advantages: it is given during surgery (no extra visit needed), produces no radiation, and reduces costs. However, it is still not widely used in the Netherlands because hospitals may not be familiar with it or unsure how to make the switch. This study will introduce ICG step-by-step in several Dutch hospitals and evaluate how to make the change as smooth and effective as possible. It will take place in three stages: I) SLNB with 99mTc only (current practice); II) SLNB with both 99mTc and ICG (transition phase); III) SLNB with ICG only (full implementation). All study procedures take place during planned surgery, with no extra hospital visits. After surgery, participants will receive a short questionnaire (10-15 minutes) to share their experiences with the procedure. Their feedback, combined with input from healthcare providers, will help researchers develop a uniform medical protocol, an implementation guide, and educational materials for surgeons and surgical trainees. The aim is to make ICG widely available across the Netherlands, ensuring that care is less burdensome, more sustainable, and more cost-effective, while keeping treatment accessible in local hospitals.

This study plans to find the most suitable lymph node cortex thickness and abnormal lymph node features to define suspicious lymph nodes. Then, ultrasound-guided core needle biopsy of axillary lymph nodes will be done, aiming to provide some guidance for the biopsy.

Background: For patients with resectable stage III-N2b non-small cell lung cancer (NSCLC), optimal perioperative treatment strategies remain an area of active investigation. Iparomlimab and tuvonralimab (QL1706) is a novel bifunctional antibody combination targeting PD-1 and CTLA-4, designed to enhance anti-tumor immunity. Objective: This phase II, single-arm, multicenter study aims to evaluate the efficacy and safety of neoadjuvant iparomlimab and tuvonralimab (QL1706) in combination with platinum-based chemotherapy in patients with resectable stage III-N2b NSCLC. Study Design and Methods: A total of 28 patients will be enrolled across approximately 4 centers in China. Eligible patients (aged ≥18 years, ECOG PS 0-1) with histologically or cytologically confirmed, resectable stage III-N2b NSCLC (AJCC 9th edition) will receive three cycles of neoadjuvant therapy every three weeks. Patients with non-squamous carcinoma will receive iparomlimab and tuvonralimab (5 mg/kg) plus pemetrexed (500 mg/m²) and carboplatin (AUC 5). Patients with squamous carcinoma will receive iparomlimab and tuvonralimab (5 mg/kg) plus nab-paclitaxel (260 mg/m²) and carboplatin (AUC 5). Surgical resection will be performed within 6 weeks following completion of neoadjuvant therapy. Subsequent adjuvant treatment is at the discretion of the investigator. Key Eligibility Criteria: Key inclusion criteria include pathologically confirmed T\<sub\>any\</sub\>N2b disease with mediastinal nodal status confirmed by EBUS/EUS or mediastinoscopy, and the determination by multidisciplinary team (MDT) assessment that the tumor is completely resectable (R0). Key exclusion criteria include known EGFR or ALK positive mutations, prior anti-cancer therapy for current lung cancer, active autoimmune disease, or uncontrolled hepatitis B or C. Study Endpoints: The primary endpoint is the pathological complete response (pCR) rate. Secondary endpoints include major pathological response (MPR) rate, objective response rate (ORR), R0 resection rate, event-free survival (EFS), overall survival (OS), impact on surgical outcomes, and safety. Exploratory endpoints involve biomarker analysis including ctDNA. Sample Size Rationale: Assuming a null hypothesis pCR rate (P0) of 8.8% (based on historical data) and an expected pCR rate (P1) of 28%, with a two-sided α of 5% and 80% power, 24 patients are required. Factoring in a 15% inoperable rate, the total sample size is 28 patients. Statistical Analysis: The primary endpoint, pCR rate, and other binary endpoints will be summarized with frequencies, percentages, and their 95% confidence intervals calculated using the Clopper-Pearson method. Time-to-event endpoints (EFS, OS) will be analyzed using the Kaplan-Meier method. Safety data will be summarized descriptively. Clinical Trial Information: This study is sponsored by The Second Affiliated Hospital of Air Force Medical University, PLA. The Principal Investigator is Dr. Yan Xiaolong.

This pilot study evaluates the diagnostic value of indocyanine green (ICG) fluorescence for sentinel lymph node biopsy (SLNB) performed through the mastectomy incision in breast cancer patients. Women with clinically node-negative, invasive T1-T3 breast cancer undergoing mastectomy with SLNB at St. Antonius or Isala Hospital will be included. All patients receive standard 99mTc injection preoperatively, followed by 5 mg (2mL) ICG injection after anesthesia. The axilla will be explored for fluorescent lymph nodes via the mastectomy incision, avoiding a separate axillary incision. Primary outcome: ICG detection rate for SLN identification via the mastectomy incision. Secondary outcomes: Comparison with 99mTc detection, number of nodes identified, concordance between methods, pathology differences, detection time, and complications. ICG is safe, non-ionizing, and causes no extra discomfort or visits. Risks and burden are minimal.

Thyroid cancer is one of the most common malignant tumors in women, ranking seventh in the United States and fourth in China. Papillary thyroid carcinoma is the most common pathological type (about 85% to 90% of thyroid cancers), and lateral cervical lymph node metastasis can reach 0.6-37.5% at diagnosis. For papillary thyroid cancer with lateral cervical lymph node metastasis, the 2015 ATA Guidelines in the United States recommend surgical resection and neck lymph node dissection as the primary treatment. Traditional cervical lymph node dissection often leaves obvious scars in the neck, which seriously affects the postoperative quality of life of patients. The previous studies have shown that endoscopy-assisted surgery with external cervical approach can achieve oncologic effects similar to traditional open surgery in the treatment of N1b papillary thyroid cancer, and can obtain better aesthetic results. However, endoscopic surgery still has some shortcomings, such as poor exposure of some surgical areas and difficult operation. Since November 2016, the investigators tried to apply modified transaxillary robotic-assisted surgery technology to the treatment of thyroid papillary carcinoma in China. The preliminary study included 30 patients, and the results showed that robot-assisted surgery via combined transaxillary-retroaural approach in the treatment of N1b papillary thyroid carcinoma achieved a good oncologic effect (5-year overall survival rate was 100.0%). As the surgical techniques improved, now the investigators can complete robotic-assisted lateral neck lymph node dissection via single-incision transaxillary approach. However, there is still a lack of high-quality evidence on the long-term oncologic outcome and quality of life of this procedure. In this study, a prospective, multi-center, randomized controlled study was conducted to compare the safety, long-term oncologic outcomes and postoperative quality of life of the robot-assisted surgery via single-incision transaxillary approach and open surgery in the treatment of N1b papillary thyroid cancer, which may provide an alternative for the patients with N1b papillary thyroid cancer.

The goal of this diagnostic test is to develop an artificial intelligence (AI)-based pan-cancer universal diagnostic model for detecting pathological lymph node metastasis (LNM), and prospectively evaluate its apllication value in the real-world clinical practice. Investigators will compare the diagnostic performance (sensitivity, specificity, etc.) of the AI model and routine pathological report issued by pathologists, to see if the AI model can improve the clinical workflow of pathological evaluation of cancer LNM in in the real world.

Why is this study being done? RET gene alterations occur in only 5-10 % of papillary thyroid cancers, but they can change how surgeons treat the disease. Gene testing is costly and not always performed, so many RET-positive tumours are missed. Researchers have built a computer program (artificial-intelligence or "AI" model) that reads routine thyroid ultrasound images and predicts whether the tumour carries a RET alteration and whether the cancer has already spread to lymph-nodes in the side of the neck. What will happen in this study? About 800 adults who are scheduled for thyroid-cancer surgery will take part. Each participant will: * have a standard pre-operative ultrasound exam (no extra scanning time), * give a routine fine-needle sample for a 14-gene panel test (results in 24 h), and * allow the AI model to analyse the ultrasound images in the background. Doctors making treatment decisions will not see the AI result. After surgery, the research team will compare the AI predictions with the gene-panel result and the final pathology report. Main goal: To find out how accurately the AI model detects RET alterations. Secondary goals: To measure the model's ability to predict lymph-node spread, and to compare costs between ultrasound-only prediction and full gene testing. Benefits and risks: Participants will receive the current standard of care; there is no added risk beyond the usual ultrasound and needle biopsy. The study could lead to faster, less expensive ways to identify high-risk thyroid cancers in the future.