Head and neck neoplasms Flashcards
What is the most common malignant head and neck lesion
squamous cell carcinoma
Structures of oropharynx
- posterior 1/3 of tongue
- soft palate
- lateral and posterior walls of throat
- tonsils
- pharynx
what are oral cancers associated with
- non healing ulcers or masses
- dental changes of poorly fitting dentures
Presentation of tongue and lip cancers
exophytic or ulcerative lesions often associated with pain
Most of the pts with primary tongue lesions have disease where
nodal disease
Major risk factors for tongue and lip cancer
tobacco/ETOH
Risk factor for cancer of oropharynx
HPV
Most common malignancy of the head and neck
oral cavity squamous cell carcinoma
Where do the majority of HPV related head and neck squamous cell carcinomas arise
oropharynx, palatine and lingual tonsils
What other structure does HPV16 affect
posterior part of the tongue, does not produce visible lesions/discolorations
three categories of oropharynx cancer
- carcinomas of oral cavity proper
- carcinomas arising n oropharynx
- carcinomas of the lip vermillion
What threee categories is oral cancer divided into
- well differentiated
- moderately well differentiated
- poorly differentiated (poor outcomes)
Alcohol and tobacco have what kind of affect in regards to risk of oral cancer
synergistic effect
What two viruses contribute to oral cancers
HPV and EBV
What often precedes oral cavity squamous cell carcinoma
- leukoplakia
- erythroplakia
- speckled erythroplakia