Programa de Pós-Graduação em Medicina - Ciências Médicas, Universidade Federal do Rio Grande do Sul – UFRGS – Porto Alegre (RS), Brasil.
Published: October 2010
AI Article Synopsis
Article Abstract
Purpose: to determine the efficacy of intraoperative injection of Dextran-500-99m-technetium (Tc) for the identification of the sentinel lymph node (SLN) in breast cancer and analyze time to label the SLN in the axillary region.
Methods: a prospective study between April 2008 and June 2009, which included 74 sentinel lymph node biopsies (SLNB) in patients with breast cancer in stages T1N0 and T2N0. After induction of anesthesia, 0.5 to 1.5 mCi of Dextran-500-99m-Tc filtered 0.22 µm in a volume of 5 mL was injected intraoperative using the subareolar technique for SLNB. After labeling with the radioisotope, 2 mL of patent blue was injected. The time elapsed between injection and the axillary hot spot, the in vivo and ex vivo counts of the hottest nodes, the background count, and the number of SLN identified were documented. Data were analyzed using descriptive statistics with SPSS program, version 18.
Results: we identified the SLN in 100% of cases. The rate of SLN identification with the probe was 98% (73/74 cases). In one case (1.35%) the SLN was labeled only with the blue dye. The mean dose of radioisotope injected was 0.97 ± 0.22 mCi. The average time to label the SLN was 10.7 minutes (± 5.7 min). We identified on average of 1.66 SLN labeled with the radioisotope.
Conclusion: the procedure for SLN identification with an intraoperative injection of the radioisotope is oncologically safe and comfortable for the patient, providing agility to the surgical team.
Otolaryngology & Head and Neck Center, Cancer Center, Department of Head and Neck Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, China; Zhejiang Provincial Clinical Research Center for Head & Neck Cancer, Hangzhou 310014, China; Zhejiang Key Laboratory of Precision Medicine Research on Head & Neck Cancer, Hangzhou 310014, China. Electronic address:
Head and neck squamous cell carcinoma (HNSCC) are the most common type of head and neck tumor that severely threatens human health due to its highly aggressive nature and susceptibility to distant metastasis. The diagnosis of HNSCC currently relies on biopsy and histopathological examination of suspicious lesions. However, the early mucosal changes are subtle and difficult to detect by conventional oral examination.
Background: The lymphatic system is the major route of cancer metastasis, and sentinel lymph nodes (SLNs) are the first station for the spread of cancer cells. Accurate identification of SLNs by tracers during surgery is crucial for SLN biopsy and lymphadenectomy. However, conventional monomodal tracers such as blue dyes and carbon nanoparticles often induce a misjudgment of SLNs and thus are still unsatisfying for clinical applications.
Department of Breast, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Moores Cancer Center, University of California, San Diego, USA.
Objective: To examine the distribution of non-sentinel lymph nodes (SLNs) and to determine the feasibility of omitting elective neck dissection (END) in cases of cT1/2N0 oral cancer presenting with SLN metastasis.
Methods: A prospective cohort of patients with cT1/2N0 oral cancer underwent SLN biopsy using a γ-probe alongside methylene blue staining, followed by subsequent END. The primary outcome variable was non-SLN metastasis, with its predictors evaluated through logistic regression analysis.
Objectives: To report the first cases of surgical staging for apparently early-stage endometrial cancer performed using the Versius® next-generation robotic surgical system (Cambridge Medical Robots [CMR] Surgical, Cambridge, UK).
Design: Prospective case series. Participants/Materials: Women who underwent surgical staging, including total hysterectomy, bilateral adnexectomy, and sentinel lymph node (SLN) biopsy, for apparently early-stage endometrial cancer using the Versius® next-generation robotic surgical system (CMR Surgical, Cambridge, UK).
Objective Breast cancer most commonly metastasizes to axillary lymph nodes via lymphatic drainage. Today, axillary lymph node surgery is at least as important as primary breast surgery. In today's breast surgery, supported by chemotherapy and radiotherapy, current approaches are taken to avoid axillary dissection in appropriate patient groups.
