Head and Neck Flashcards
What are the head and neck cancers?
Oral cavity/oral cancers Tongue cancer Oropharynx, tonsils, nasopharynx, hypopharynx Nasal and sinus cancer Salivary glands Middle ear
Laryngeal
(Thyroid)
What is the lymphatic drainage of the oral cavity?
Superficial nodes - submandibular nodes
Submental nodes
Superficial cervical nodes along external jugular vein and drain skin over angle of the jaw
Deep nodes
Jugulodigastric node drains tongue and tonsils
Jugulo-omohyoid
What are the cervical lymph node levels?
IA - submental IB - submandibular II - upper jugular deep to SCM III middle jugular IV inferior jugular V posterior cervical triangle VI anterior neck compartment
What is the classification of oral cavity cancers?
Over 90% are squamous cell, oral mucous comprises of stratified squamous epithelium
Basal cell on upper lip
Minor salivary gland cancers - Kaposi, lymphoma or sarcoma
What are the non-modifiable risk factors for oral cavity cancer?
Male gender Age Past cancer history Family history of head and neck cancer Past radiation exposure
Plummer-Vinson syndrome inc iron deficiency
What are modifiable risk factors for oral cavity cancer?
Alcohol consumption Tobacco smoking Use of smokeless tobacco e.g. betel quid, chews Sun exposure Poor oral hygiene Chronic oral inflammation
Oral sex via transmission of HPV
What are premalignant lesions of the oral cavity?
Leukoplakia - thick white patches on inside surface
Erythroplakia - red mucosal patches
What is included in oral cavity cancer?
Buccal mucosa Retromolar triangle Hard palate Anterior two third of tongue Alveolus - part of the jaw and gums where teeth held in place Floor of mouth Mucosal surface of lip
What are some differentials for oral cavity cancer?
Actinic keratosis
Oral candidiasis
Leukoplakia
Lichen planus
What is the presentation of tongue cancer?
May grow significantly before any symptoms
Often well differentiated
Usually more than 2cm in size
May develop speech and swallowing dysfunction, pain if tumour involves lingual nerve
Pain may be referred to ear
What is the presentation of tonsillar cancer?
Most are SCC
Could be secondary mets from breast, lung, renal, pancreatic, colorectal
Neck mass
Sore throat, ear pain, foreign body or mass sensation
Bleeding may occur
Trismus - ominous sign that there is involvement of pharyngeal space - spasm of jaw muscles so jaw tightly closed
Weight loss, fatigue
When should an oral cavity cancer be referred?
Unexplained ulceration in oral cavity lasting >3 weeks
Or persistent unexplained lump in the neck
Lump on lip or oral cavity
Red/red and white patch in oral cavity; assessment urgent by dentist
What is the management of oral cavity cancer?
Early cancer:
Surgical resection or brachytherapy in accessible well demarcated lesions
External beam radiotherapy, selective neck dissection for prophylaxis in N0 disease
Post op radiotherapy if positive nodes
Cisplatin chemo and post op radiotherapy
For advanced cancer:
Surgical resection and reconstruction
Radical neck dissection
External beam radiotherapy and concurrent cisplatin chemo if tumour cannot be adequately resected, or patient preference
What are the features of buccal mucosa cancer?
Painless in early stages Becomes ulcerated Secondarily invades adjacent nerve Deeply ulcerative lesion Easily treatable
What are the cancers of the pharynx?
Oropharynx - base of tongue, tonsil, soft palate
Hypopharynx - postcricoid area, pyriform sinus, posterior pharyngeal wall
Nasopharynx - behind nasal cavity and above soft palate
Usually squamous cell carcinomas originating in epithelial cells lining the throat
