2018 Honored Lecturer
Institute: Center Hospital of Luxembourg
Topic: 2018 Ji-Chuan Yang International Lecture on Head and Neck Oncology Robotic surgery in Head & Neck : from the Da Vinci to the Medrobotics Flex system
The main difficulty with laryngeal application of the da Vinci robot was getting a good visualization and exposure of the larynx due to the bend around the tongue base. The rigid endoscope of the da Vinci cannot do so and hence a complete appreciation of lesions of the larynx is not always possible. Over the last two years, a novel single-port operator-controlled computer assisted semi-rigid transoral ‘robotic’ system-the Medrobotics Flex was initially trialed in several centres in Western Europe and therefore in the USA Controversy sur rounding the use of the term ‘robot-assisted surgery’ does exist. This system is essentially an endoscopic system that is steered using a joystick ‘robotically’ by the operating surgeon who negotiates the curvilinear anatomy of the upper aerodigestive tract. It is therefore not a ‘line-of-sight’ system requiring angled endoscopes to ‘see’ around corners and does not utilize rigid ‘straight’ instrumentation.
The system is therefore ‘robotic’ in the manipulation of the flexible endoscope to the site of surgery but should not be confused as ‘robotic assisted’. The instruments are not ‘wristed’ like the da Vinci but are rotatable using flexible wire technology.
Additionally, the use of flexible instrumentation is manual and there are no robotic enhancements in surgical precision, tremor reduction and scaling of motion. Visualization is provided by a high definition digital camera incorporated in the distal end of the scope. The endoscope can currently extend as far as 17 cm hence access to the larynx and subglottis is well within reach. The instruments are 3.5mm and can project through the two side instrument ports 20mm beyond the tip of the endoscope.
The aim of this study was to assess the feasibility and ease of use of this system with a particular emphasis on visualization and resection procedures of laryngeal lesions.
2017 Honored Lecturer
Thomas Jefferson University, Philadelphia, PA USA
Affiliate Professor, Biological Sciences
University of Delaware, Newark DE USA
Director Multi-disciplinary Head & Neck Clinic
Helen F. Graham Cancer Center, Christiana Care
Newark DE USA
Topic: Thyroid Molecular Testing Using Ultrasound
- Surgeon Performed Thyroid Ultrasound Guided FNAC with On-Site Cytopathology improves adequacy and accuracy.
- Ultrasound Risk Stratification
- Bethesda Cytology Classification for fine needle aspiration.
- Molecular alteration testing for Indeterminate thyroid nodules improves specificity analysis and may reduce the number of completion thyroidectomies
- Molecular alteration testing for Indeterminate thyroid nodules improves sensitivity analysis and may reduce surgery on benign nodules.
- Commercially Available Molecular Testing for Thyroid Cancer:
- Gene Mutation Panel: miRInform (Asuragen), now ThyGenX (Interpace)-Rule in cancer
- Gene Expression Classifier (Afirma, Veracyte)-Rule out cancer
- ThyroSeq v2.1 (CBL Path)- Rule in cancer/rule out cancer
- ThyGenX + ThyraMIR (Interpace)-Rule in cancer/rule out cancer
- Are Molecular Alteration tests valid predictors of false positives and negatives?
- Genetics overview-BRAF, RAS, RET/PTC, PAX8/PPARg, mRNA panels, miRNA panels
- Clinical Utility: Do Commercially available tests change management?
- Factors that may mute the power of a rule in test and positive predictive value- and impact of new diagnostic category NIFTP
- Incorporation of American Thyroid Association Guidelines and Molecular testing.
- Algorithm to rule out cancer with molecular testing: prevalence and negative predictive value.
- Prognostication with Multiple Mutations
- Case examples
- Indications favoring rule in testing: FLUS/FN, High Prevalence of cancer at your institution for Indeterminates FNAC, High risk ultrasound features, Highly specific mutation for cancer, Surgeon favoring total thyroidectomy for DTC <4cm.
- Indications favoring rule out testing: FLUS/FN, Low prevalence of cancer at your institution for DTC on Indeterminates, Nodules < 4cm, No high risk history, physical or ultrasound features.
2016 Honored Lecturer
Jesus E. Medina, MD, FACS
Department of Otolaryngology Head and Neck Surgery
University of Oklahoma
Topic: Management of the Neck in the Era of "Organ Preservation"
The treatment of advanced carcinomas of the larynx and pharynx has evolved from surgery and postoperative radiation to “organ preservation” strategies with various combinations of radiation and chemotherapy and more recently to tissue-sparing transoral endoscopic and robotic surgery. This has brought up several dilemmas in the management of the cervical lymph nodes, both electively and therapeutically.
The first dilemmas to be addressed in this presentation concern the timing and extent of elective node dissection, as well as the need to address the retropharyngeal lymph nodes, in patients with oropharyngeal tumors treated transorally with endoscopic or robotic assisted resection.
The second dilemma concerns the management of the clinically N0 neck in patients undergoing “salvage”, particularly laryngectomy after failure of treatment with radiation alone or in combination with chemotherapy.
The third set of dilemmas concern the management of patients with clinically obvious lymph node metastases, particularly those with advanced neck disease (N2 – N3), who are initially treated with radiation with or without chemotherapy. Issues to be discussed are whether or not a planned neck dissection should be performed, irrespective of the response of the tumor in the neck, the timing of the decision to dissect the neck nodes and the role of CT and PET scanning in identifying the subset of patients who need a neck dissection and in the decisions about the extent of the node dissection.
2015 Honored Lecturer
Department of ORL-HNS
Department of Medical Device Management & Research, SAIHST
Sungkyunkwan University School of Medicine,
Samsung Comprehensive Cancer Center
2015 topic: Debating issues for the management of tongue squamous cell carcinoma
Oral cancer is the eighth most common cancer in worldwide and tongue squamous cell carcinoma(TSCC) is a common cancer in oral cavity. There were several issues of the treatment option for tongue squamous cell carcinoma. Elective neck dissection in patients with the clinical negative neck in early TSCC, safe surgical resection margin, and reconstruction method for TSCC will be discussed.
The treatment of patients with clinical negative neck (cN0) in T1-2 TSCC remains controversial. A conservative trend in the treatment OSCC N0 patients has encouraged the sentinel lymph node biopsy(SLNB). Our study SLNB for cN0 oral tongue SCC provides acceptable oncological outcomes by long-term observation. Despite the false positive rate of 11.7% in the SLNB application group, phase did not affect neck control rate, stringent strategy of follow-up and salvage treatment is mandatory to maintain acceptable outcomes.
Current NCCN Clinical Practice Guideline recommend the adjuvant treatment in case with close resection margins(~5mm) in patients with oral squamous cell carcinoma in spite of tumor size or stage. In our recent study, when the patients were stratified into small (T1-2) and large (T3-4) tumors, close margin was a significant risk factor for local recurrence in T3-4 OSCC(p=0.036, HR=11.079, 95% CI=1.170-104.863), but not in T1-2 OSCC. Close margin was not an independent risk factor of local recurrence in T1-2 OSCC while it significantly increased local recurrence rates in T3-4 OSCC.
Generally, a variety of different methods such as radial forearm free flap(RFFF) and anterolateral thigh free flap(ALTFF) have been used in tongue reconstruction according to the defect size and site. However, RFFF and ALTFF show various features in the donor site morbidity such as tendon exposure, skin graft loss and sensory deficits. Recently, we developed facial artery musculomucosal island flap (FAMMI) to reconstruct small and medium sized defects in tongue and mouth floor. FAMMI flap transferred to the neck through a paramandibular tunnel and transposed to the intraoral area for primary reconstruction of partial glossectomy defects. Intraoral donor site could be closed primarily or secondary with minimal scarring.