Minimally Invasive Head and Neck Surgery - Chinese Hospital · 2016-10-18 · Minimally Invasive...
Transcript of Minimally Invasive Head and Neck Surgery - Chinese Hospital · 2016-10-18 · Minimally Invasive...
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Minimally Invasive Head and Neck Surgery
Patrick Ha, MD FACSIrwin Mark Jacobs and Joan Klein Jacobs Distinguished Professor
Chief, Division of Head and Neck Surgical Oncology
University of California San Francisco
18th Conference on healthcare of the Chinese in North America
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Disclosures
Consultant: Bristol Myers Squibb
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Objectives
Assess the scope of head and neck squamous cell cancer and our general treatment paradigms
Appreciate the opportunity for surgical approaches for this disease
Understand where minimally invasive techniques can be advantageous in head and neck cancer treatment
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Head & Neck Squamous Cell
Carcinoma
• 45,000 cases/yr in the US (3%), over 500,000
worldwide
• Associated with tobacco, alcohol, betel,
HPV, chemical exposure
• Overall poor prognosis: 5-yr survival ~50%
• Presents at later stage due to compliance,
lack of symptoms
• Early detection is critical
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The Workup
• History
• Exam
• Tissue (biopsy)
• Imaging
• Referrals – dental, radiation oncology, medical
oncology, SLP, social work, dietary
• Tumor board
• Treatment!
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Head and Neck Cancer
Treatment Overview
• Treatment = balance of form and function
• Surgery or radiotherapy for early stage
disease
• Surgery/Radiotherapy/Chemotherapy for late
stage disease
• Subsite and stage greatly affect our decisions
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What affects medical decision-making?
Survival
Choices offered
Family input
Cost
Confidence in providers
Internet
Quality of life / anticipated function after treatment
Patient factors
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Minimally Invasive Surgery
Goal: quicker return to function, perform procedures otherwise difficult/impossible to accomplish
Use of advanced instrumentation to reduce or eliminate incision size
BUT – should not sacrifice on desired outcome of surgery
• Safety, Cost, Adoptability, Time
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Treatment by subsite
Subsite Surgery Chemo/
Radiotherapy
Nasopharynx - +++
Oral Cavity +++ -
Oropharynx ++ ++
Larynx +++ ++
Hypopharynx ++ ++
Early Stage (I/II) Late Stage (III/IV)
Subsite Surgery Chemo/
Radiotherapy
Nasopharynx - +++
Oral Cavity +++ -
Oropharynx + +++
Larynx ++ +++
Hypopharynx + +++
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Oropharynx
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Oropharynx
• Soft palate to vallecula (in front of epiglottis)
• Function: swallowing, air passage
• Cancer: rising in incidence, HPV related
• Often presents with lymphadenopathy (cystic)
• May be treated surgically – transoral, lateral
approach, versus mandibular split
• Trend has been towards chemoradiotherapy?
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HPV in H&N cancer Overview
• HPV 16 & 18, and others
• Occurs in younger nonsmoker/nondrinkers
• Cystic neck nodes
• Thought to be a sexually transmitted disease
• Latency period is decades
• Confers a better prognosis
• Patients live longer with treatment effects
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Complications of Chemo/radiotherapy
Trismus
Xerostomia
Dysphagia
Esophageal stricture
Fibrosis
Osteoradionecrosis of jaw
Secondary malignancies
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Surgical Considerations
• Mandible split/swing, resection, free flap
is a lot to go through – previously
standard
• reconstruction required?
• C/RT needed anyway
• Can you see transorally?
• Patient selection
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TORS
(TransOral Robotic Surgery)
• Minimally invasive approach
• Good resections, good results
(functional and oncologic)
• Patient selection?
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Wide View and High Magnification
Three Dimensional Optics
0 and 30 degree standard and high
magnification 3-D telescopes
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Tongue Base Resection
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Benefits of TORS/ELS
1. Quicker return to normal activities
2. Shorter hospitalization
3. Reduced risk of swallowing problems
4. Fewer complications compared to traditional surgery
5. Less scarring than traditional surgery
6. Less risk of infection
7. Less risk of blood transfusion when compared to
open surgery
8. No routine use of tracheostomy compared to open
surgery
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Which patients benefit from TORS?
• Strongest benefit in:
•smoker/drinker, non HPV patients
•patients in whom CRT is not an option medically
•Early stage
•patient preference
•option to reduce therapy
• True survival benefit at least equivalent to
primary CRT
• Studies underway to determine role of TORS
and de-escalation therapy
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Larynx
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Larynx anatomy and function
• Arytenoid is the mobile joint
• Vocal cord mucosa = vibratory layer
• Thyroid cartilage provides framework
• Voice, communication
• Breathing – window to the trachea
• Last protective element to prevent aspiration
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Larynx Cancer
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Larynx Cancer
• Early stage (T1-2) – radiotherapy vs
endoscopic laser surgery
• Later stage (T3-4) – chemoradiotherapy
vs ELS vs open partial surgery
• Late stage (T4) – total laryngectomy
• Less propensity for nodal spread
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Endoscopic Laser Surgery
• Custom resections
• Incisions avoided
• Rarely requires tracheostomy
• Good oncologic/functional outcomes
• Requires patience and expertise
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Oncologic Results
• T1 local control rates ~85-93%, survival
>95%
• T2 local control rate ~70%, survival ~90%
• Laryngeal preservation rate T1=97%,
T2=85%
• Studies indicate similar results for radiation
failure groups
• Extreme lateral extension and anterior
commissure extension may increase
recurrence rate
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Benefits
• Duration of treatment
• Cost effectiveness
• Minimal morbidity
• Preservation of normal tissue
• Saves radiation for future/appropriate
use
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Suspension microlaryngoscopy
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CO2 laser setup
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68 yo man with hoarseness
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3 weeks later, after initial biopsy
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After completion of laser surgery
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9 months postop
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Supraglottic Carcinoma, T2N0
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• Bilateral neck dissections performed,
negative. No further treatment given.
• Some swallowing difficulty – required
PEG for 2 weeks
• Resolved completely to normal PO diet
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Endoscopic Supraglottic
Laryngectomy 3 weeks postop
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Endoscopic Supraglottic
Laryngectomy 3 yrs postop
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Partial Surgery Considerations
• Patient must be good medical/surgical
candidate
• Postop expect swallowing difficulty
• If laryngeal then voice difficulty
depending on depth of resection
• Needs especially close follow-up
• Riskier if in setting of radiation failure
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Conclusions
• Early detection is critical
• Surgery is a consideration in select groups
based on subsite
• MIS changes our surgical options
• Treatment and rehabilitation concerns vary
with stage/subsite & is related to anatomy
• Significant morbidity due to any therapy is
possible: cosmesis, xerostomia, dysphagia,
social dysfunction
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Thanks for your attention
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