katedra onkologii uniwersytet medyczny we wrocławiu lek ......head and neck cancers katedra...
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Head and neck cancers
Katedra Onkologii
Uniwersytet medyczny we Wrocławiu
lek. Dominika Zielecka-Dębska,
lek. K. Konat, lek. K. Lichoń
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Head and neck cancers - definition
Malignant neoplasms of the upper part of respiratory and digestive system and skin of head and neck:
• Nasal cavity
• Paranasal sinuses
• Oral cavity• Oral cavity
• Salivary glands
• Pharynx (nasopharynx, oropharynx and lower pharynx)
• Larynx
• H&N cancers of unknown origin
• Head and neck skin
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CNS tumors are not considered as H&N cancers.
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Epidemiology
H&N cancers make about 5% all registered
cancers in Poland (7% among men and 1%
among women).
Annually about 6000 new cases and 3800 Annually about 6000 new cases and 3800
deaths.*
*Not including H&N skin cancers.
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Epidemiology – years 2013-2014
Cancer
Standardized (W)
incidence ratio (number)
Standardized (W) death
ratio (number)
larynx 3,44 (4551) 2,23 (3031)
tonsil 0,92 (1143) 0,45 (581)
other and unspecified
parts of tongue
0,78 (974) 0,46 (604)
Wojciechowska Urszula, Didkowska Joanna. Zachorowania i zgony na nowotwory złośliwe w Polsce. Krajowy Rejestr Nowotworów, Centrum Onkologii - Instytut im. Marii Skłodowskiej - Curie. Dostępne na stronie http://onkologia.org.pl/raporty/ dostęp z 03/10/2017.
parts of tongue
flor of moutch 0,7 (858) 0,54 (691)
parotid gland 0,51 (668) 0,2 (319)
lower pharynx 0,5 (635) 0,38 (483)
lip 0,47 (760) 0,11 (190)
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Secondary neoplasms
Patients with H&N cancers have increased risk of
developing secondary neoplasms (2% annually
and 36% in 20 years).
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Etiology
• Smoking and chewing tabacco
• Alcohol
• Viral infection (HPV, EBV)
• Prolonged mechanical irritation
• Low oral hygiene• Low oral hygiene
• Environmental factors (np. sunlight, wood dust)
• Iron and vitamin deficiency (B12, C)
• Betal and areca nuts
• Smoking marijuana
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Screening
There is no screening for H&N cancers.
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Symptoms
Non-specific and site-dependent:
• Ulceration, swelling or irritation that does not heal
• Visible or palpable tumor in the head and neck
• Hoarseness, changed voice, speech disorders
• Obstruction of the nasal passages
• Unpleasant smell from the mouth• Unpleasant smell from the mouth
• Bleeding or abnormal discharge from the nose or mouth
• Difficulty in breathing, chewing, swallowing, tongue or jawmovements
• Hearing disorders or ear pain
• Weight loss not linked to diet
• Impairment of cranial nerve function
• Other
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Cancer of thehard palate
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Diagnosis
1. History (age, stimulants, cancer in history, familial neoplasm, occupational exposure, exposure to infectious agents, co-morbidities)
2. Physical examination (if we examine pathological mass of the tumor we need to determine the location, position relative to the adjacent structures, nature, tenderness, relative to the adjacent structures, nature, tenderness, size and mobility of each lesion, and skin condition over the lesion)
3. Ear, Nose and Throat Examination (ENT) with direct and indirect laryngoscopy (note the movement and symmetry of vocal cords)
4. Endoscopic examination
5. Excisional or incisional biopsy (basis for diagnosis)
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Sample examination
On the right side of the neck, at the height of
the hyoid bone, in front of the SCM, there is a
fixed, hard, painless, polycystic tumor, about 4
cm in diameter. Skin over the tumor is shifting, cm in diameter. Skin over the tumor is shifting,
unchanged.
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ENT examination
Mucosal spread may not be visible in diagnostic
imaging but easy to see in ENT examination.
In addition, it’s possible to determine the
movement of the vocal cords.movement of the vocal cords.
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Cancer of the lower pharynx
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Diagnostic imaging
• H&N CT (thorough evaluation of bone structures)
• H&N MRI (assessment of soft tissues and the base of the skull)
• PET-CT (differentiation between benign and malignant lesions)
• PET-CT (differentiation between benign and malignant lesions)
• Chest X-ray/chest (distant metastases, othertumors)
• Abdominal US
• Pantomography (evaluation of bone infiltration)
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• MRI: massive tumor with extensive infiltration
• TK: infiltration of the base of the skull
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Staging
The stage of the tumor at diagnosis is the main prognostic factor.The degree of advancement is determined by the TNM scale.
• T - primary tumor (location, size, relation to neighboring structures)
•structures)
• N - lymph node involvement
• M - distant metastasesStage I and II: small primary tumor without lymph node involvement.Stage III and IV: a large primary tumor that may infiltrate neighboring structures and spread to regional lymph nodes.
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Prognosis
Prognosis is dependent on the final diagnosis and staging.
For many localized head and neck cancers, the survival rate of patients in stage I is up to 90%.
For patients with locally advanced disease at diagnosis (stage III and IV) the survival rate drops below 40%.(stage III and IV) the survival rate drops below 40%.
The presence of lymph node metastases in patients with small primary tumors decreases survival by 50%.
Involvement of even one lymph node is associated with a significant reduction in survival.
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H&N lymphatic system
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Treatment
Multidisciplinary treatment team is required:
• Surgical treatment
• Radiotherapy
• Chemotherapy
• Molecular targeted therapy • Molecular targeted therapy
The choice of treatment depends on:
• Tumor dependent factors (location, stage, histopathological diagnosis)
• Factors dependent on the patient (age, fitness, coexisting conditions, nutritional status)
There is often a need for combined therapy.
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Treatment
• Standard treatment for patients with low
stage head and neck malignancy (I-II: cT1-2N0)
is surgical treatment or radiotherapy.
• In more advanced tumors (grade III-IV: cT3-4 • In more advanced tumors (grade III-IV: cT3-4
and / or N1-3), concurrent radiochemotherapy
or surgery and radiochemotherapy are most
commonly used.
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Surgery
Is the treatment of choice in the case of:
• Oral cavity cancer
• Cancer of the salivary glands
• Cancer of the nasal cavity and paranasal sinuses
The aim of surgical treatment is to remove the primary tumor with the margin of healthy tissue for histopathological evaluation.
Often a key part of surgical treatment is resection of the lymph nodes (indicated when metastases in regional lymph nodes are present).
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Radioterapy
It can be used alone to preserve organ function (eg laryngeal cancer, lower pharynx cancer).
It can be a part of combined therapy with chemotherapy (eg for treatment of chemotherapy (eg for treatment of nasopharyngeal carcinoma), surgical treatment (eg adenoid cystic carcinoma in the head and neck).
It can also be used for paliation (eg, hemorrhage).
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Chemotherapy
Essentially it is a component combined therapy.
Chemotherapy alone is used only for palliative
treatment.
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Combined therapy
The most effective form of combined therapy is
concurrent radio-chemotherapy with cisplatin.
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Side effects of the treatment
Are dependent on the treatment and its intent:
• Reduced salivation, dry mouth, taste
disturbance, increased caries
• Tenderness, pain, inflammation in the mouth• Tenderness, pain, inflammation in the mouth
• Difficulty in swallowing, chewing and mouth
opening, nausea and vomiting, weight loss
• Infections
• Other
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Oral cavity mucositis
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Follow-up
Early detection of the complications of the
treatment, treatment failure, tumor
recurrence, second independent cancer and
implementation of adequate treatment.implementation of adequate treatment.
The frequency of follow-up visits decreases with
the time elapsed since completion of the
treatment.