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Flashcards in ENT neoplasms Deck (50)
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Epidemiology of ENT neoplasms?

- male to female ratio: 2:1 to 4:1
- US: 3% of malignancies
- 12,000 Americans die and 60,000 develop these neoplasms annually


RFs of ENT neoplasms?

- 5-25 fold increase compared to non-smokers
- 2ndhand smoke exposure
-marijuana use maybe

alcohol: may have assoc with smoking

viral infection:
EBV - most common in S. China
HPV: HPV type 16, usually seen in younger men who are nonusers of tobacco or alcohol
HIV: 2-3x increase risk for SCC

occupational exposure: dry cleaning agents, pesticides, plastic and rubber products

radiation: assoc with thyroid cancer, salivary gland tumors, SCC, sarcomas

poor oral hygiene and periodontal disease


Mucosal oral tumors?

- leukoplakia
- erythroplakia
- oral lichen planus
- oral carcinoma


Salivary gland tumors?

- parotid
- warthin's tumor
- pleomorphic adenoma


What is leukoplakia?

- precancerous lesion that presents as white patches or plaques on oral mucosa that can't be removed by rubbing
- b/t 1-20% of lesions progress to carcinoma within 10 years
- common in smokeless tobacco users
- bx to rule out SCC
- distinguished by thrush - white patches can't rub off


What is erythroplakia?

- similar to leukoplakia except it has red erythematous component
- 90% cases are dysplasia or carcinoma
- ETOH/tobacco risk factors
- need bx to confirm


What is oral lichen planus?

- chronic inflammatory autoimmine disease
- presentation: lace like white patches on buccal mucosa, erosions on gingival margin
- exfoliative cytology or bx
- therapy aimed at managing pain and discomfort: corticosteroids
- good dental hygiene, going to dentist regularly


Oral cancer - Mostly what?
most common locations?

- 90% of all oral cancers are SCC
- most common locations:
floor of mouth
- 8th most common cancer in men


Signs and sxs of oral cancer?

- most common is sore in mouth that doesn't heal
- red or white patch in mouth
- persistent sore throat or something caught in throat
- hoarseness or change in voice
- chronic halatosis


Dx oral cancer?

- good hx for RFs
- exam: close inspection of oral cavity
- endoscopy
- bx: FNA, open bx, oral brush


Tx of oral cancer?

- surgery
- radiation: sometimes in combo or primary tx, used for pts who can't undergo surgery or surgery causes severe impairment


Most common sites for salivary gland tumors?

- parotids: 80-85%
- submandibular: 40-45%
- sublingual: 70-90%
- 50-70% minor salivary glands

- most common type of benign salivary gland tumor is pleomorphic adenoma (parotid)
- MC type of malignant tumors include mucoepidermoid carcinoma and adenoid cystic carcinoma

- rare tumor, 6-8% of head and neck tumors
- 2000-2500 cases/yr in US


RFs of salivary gland tumors?

- radiation exposure
- smoking: warthin's tumor only salivary tumor assoc with smoking
- virus infection: HIV, EBV
- industrial exposure: rubber manufacture, hair dressers, nickle compounds


Presentation of salivary gland tumors?

- painless mass or swelling of salivary glands
- minor salivary glands arising within oral cavity present:
sub-mucosal mass, mucosal ulceration of palate, lips or buccal mucosa
depending on location:
nasal obstruction
vision changes
(have face paralysis and other involvement - think malignant)


Work up: PE of salivary gland tumor, studies done?

- workup:
good hx about mass - how long has it been there? Getting bigger? any hx of skin cancer (SCC/melanoma)
impt close inspection of oral cavity, palpation of neck, facial nerve paralysis - have pt make faces at you!
CT/MRI/US: with warthin tumor need to image both parotid glands, tendency to be bilateral (look for mass on otherside if found on one side)
- bx: FNA cytology, US guided core bx


Tx of salivary gland tumors? parotid gland tumor tx?

- usually surgery, radiation or combo

parotid gland: depends on size, involvement, benign, malignant, or facial involvement
- conservative: partial parotidectomy w/o fully dissecting facial nerve
- superficial: parotidectomy of entire superficial lobe and dissection along facial nerve
- total: removal of entire lobe and surrounding tissue with preservation of facial nerve (high grade tumor)
- benign:
superficial resection - pleomorphic adenomas
conservative - warthin's tumors


Tx of submandibular gland tumor?

- submandibular sialoadenectomy and resection of submandibular gland
- benign: simple excision of gland


Sublingual gland tumor tx?

- resection of floor of mouth and involved sublingual gland, as well as ipsilateral submandibular gland


Minor salivary gland tumor tx?

- surgical resection with radiation preferred


How common are pleomorphic adenomas?
Dx tests, tx?

- 3-6% of all head and neck tumors
- most common benign tumor of parotid (53-71%)
- slowly growing, painless, solitary, firm, smooth, moveable mass without nerve involvement
- superficial parotidectomy


Describe warthin's tumor?

- 2nd most common benign tumor
- tendency to be bilateral, parotid gland only
- older age group
- superficial location
- smoking is a RF: only salivary gland tumor with this risk factor (foot stomp)
- conservative resection


How common are nasal and sinus tumors?

- cancerous nasal cavity or sinus tumors are rare
- about 2000 cases diagnosed in US each year
- most of these tumors occur in maxillary sinus (60-70%)
- 20-30% are in nasal cavity
- 10-15% are in ethmoid sinuses
- cancer in sphenoid or frontal sinuses is extremely rare (5% of cancers)


Causes and RFs of nasal and sinus tumors?

- smoking and tobacco smoke
- exposure to dust from wood
- leather or textiles
- inhaling vapors from glue
- formaldehyde
- solvents
- nickel


Signs and sxs of nasal and sinus tumors?

- persistent nasal congestion, especially on one side
- pain in forehead, cheek, nose or around eyes or ear (double or blurred vision)
- post-nasal drip at back of throat
- frequent and persistent nosebleeds


Dx of nasal and sinus tumors?

- medical hx and PE of head and neck
- small fiberoptic scope may be used to look in the nasal cavity and sinuses
- bx:
FNA, open bx


Tx of nasal and sinus tumors?

- surgery:
+/- radiation or chemo
- radiation
- chemo


Malignant nasal and sinus tumors?

- SCC: most common
- adenocarcinoma: occurs in sinus lining
- lymphomas
- esthesioneuroblastomas: develop from nerves at base of skull where they enter the nasal cavity and provide sense of smell


Benign nasal and sinus tumors?

- osteomas: usually don't cause sxs, but can impede the frontal, ethmoid or maxillary sinuses, if it does cause obstruction it will need to be removed surgically
- viral infections:
HPV - can cuase papillomas - wart like growths in the nose or sinus, 10% are cancerous, most are benign


How is nasopharyngeal cancer different than other pharyngeal cancers?

- much more common with Asians and SE Asian populations
- strongly correlated wth EBV
- some types are highly radiosensitive and radiotherapy is the preferred tx
- most nasopharyngeal cancers are SCC


Keratinizing form of nasopharyngeal cancer?

- well-differentiated cells that produce keratin:
more common in US, less in Asia
- less assoc with EBV
- may be assoc with tobacco use
- less radiosensitive and more radio resistant
- doesn't tend to met