The evolution of the management of regional lymph nodes in melanoma

Does It Really Pay-Off? Comparison of Lymphadenectomy versus Observational Approach in Skin Melanoma with Positive Sentinel Node Biopsy: Systematic Review and Meta-Analysis

The aim of this meta-analysis was to answer the question as to whether performing CLND (complete lymph node dissection) is necessary in every case of the melanoma patient after the positive SNB (sentinel node biopsy). To resolve doubts the authors reanalyzed previous articles and systematized the knowledge about the concerning medical problem. The databases such as PubMed, Scopus and Web of Science were screened to find articles that will be helpful to answer the controversial question if performing lymphadenectomy is crucial. The inclusion criteria consisted of randomized clinical trials, comparison of lymphadenectomy versus observation and positive sentinel node biopsy. After which, seven articles were examined. Authors analyzed parameters such as: recurrence, 3-year survival and 5-year survival. There was no relationship between the performance of CLND and melanoma recurrence (OR 1.04; 95% CI: 0.82–1.31; p = 0.75). However, no CLND group had higher 3-year survival (OR 1.22; 95% CI: 1.03–1.44; p = 0.02) and 5-year survival (OR 1.30; 95% CI: 1.19–1.85; p = 0.008). In conclusion, the observational approach to the melanoma patients with positive sentinel node biopsy is associated with comparable or slightly improved 3- and 5-year survival, then in case of routine lymphadenectomy. Although, in each melanoma patient a decision to perform or withhold lymphadenectomy should always be considered individually. Patients with low perioperative risk could be considered for surgical approach. The study was registered in PROSPERO and was assigned with the unique identifying number “CRD42021241272”.

Merkel cell carcinoma of the head and neck: a single institutional experience

Merkel cell carcinoma (MCC) is a rare cutaneous malignancy occurring mostly in older immunocompromized Caucasian males. A growing incidence of MCC has been reported in epidemiological studies. Treatment of MCC usually consists of surgical excision, pathological lymph node evaluation, and adjuvant radiotherapy. This paper reports the experience of a single tertiary center institution with 17 head and neck Merkel cell carcinoma patients. Median followup for the cohort was 37.5 months. After five years, recurrence-free survival, disease specific survival, and overall survival were 85%, 90%, and 83%, respectively. Our limited data support the use of adjuvant radiotherapy. We also report two cases of MCC located at the vestibule of the nose and two cases of spontaneous regression after diagnostic biopsy. About 40% of our patients were referred to our center for surgical revision and pathological lymph node evaluation. Increased awareness of MCC and an interdisciplinary approach are essential in the management of MCC.

Giant melanoma: novel problem, same approach

Thick melanomas are relatively common; however, melanomas greater than 10 cm in size are rarely encountered. Though the size may seem daunting, the work up and principles of wide surgical excision remain the same. Sentinel lymph node biopsy should also be considered in patients with no clinical evidence of metastatic disease.

Limiting the morbidity of inguinal lymphadenectomy for metastatic melanoma

BACKGROUND

Surgery is currently the primary treatment modality for metastatic melanoma involving the inguinal lymph nodes. However, inguinal lymph node dissections are associated with substantial morbidity including infection, wound dehiscence, lymphedema, seroma, and deep venous thromboembolism (DVT). Improved understanding is needed regarding the factors predisposing patients to complications and the operative and perioperative maneuvers that can decrease morbidity.

METHODS

We reviewed recently published literature regarding the morbidity associated with lymphadenectomy in the treatment of inguinal metastatic melanoma. Where available, emphasis was focused on appropriately designed studies aimed at reducing treatment-related morbidity. When appropriate, the review was supplemented by our personal experience.

RESULTS

Strategies to limit treatment-related morbidity involve optimizing the preoperative assessment, operative technique, and postoperative care. Establishing the diagnosis of nodal metastasis early using minimally invasive techniques is critical to reduce subsequent perioperative complications. Morbidity is higher for inguinal compared to cervical or axillary lymphadenectomy, and many variations in extent of inguinal lymphadenectomy and operative technique have been reported. The lack of definitive trials has led to controversy regarding surgical technique such as indications for pelvic lymphadenectomy ("deep" node dissection), saphenous vein preservation, and sartorius transposition. In the postoperative period, the use of DVT and lymphedema prophylaxis should be considered to potentially improve patient outcomes.

CONCLUSIONS

While the morbidity of inguinal lymphadenectomy can be substantial, several straightforward pre- and postoperative measures can be instituted to limit morbidity. Controversy persists regarding the indications for and benefit of pelvic lymphadenectomy, saphenous vein preservation, and sartorius muscle transposition. A multi-institutional trial is currently in progress to investigate the safety of avoiding lymphadenectomy in patients with microscopic metastases in the sentinel node.

A comprehensive overview of radioguided surgery using gamma detection probe technology

The concept of radioguided surgery, which was first developed some 60 years ago, involves the use of a radiation detection probe system for the intraoperative detection of radionuclides. The use of gamma detection probe technology in radioguided surgery has tremendously expanded and has evolved into what is now considered an established discipline within the practice of surgery, revolutionizing the surgical management of many malignancies, including breast cancer, melanoma, and colorectal cancer, as well as the surgical management of parathyroid disease. The impact of radioguided surgery on the surgical management of cancer patients includes providing vital and real-time information to the surgeon regarding the location and extent of disease, as well as regarding the assessment of surgical resection margins. Additionally, it has allowed the surgeon to minimize the surgical invasiveness of many diagnostic and therapeutic procedures, while still maintaining maximum benefit to the cancer patient. In the current review, we have attempted to comprehensively evaluate the history, technical aspects, and clinical applications of radioguided surgery using gamma detection probe technology.