18 Questions
Where do squamous cell carcinomas most commonly arise in the head and neck?
Oral cavity
What is the 5-year survival rate of early-stage oral cancer?
Approximately 80%
Which of the following is NOT a predisposing factor for cancer of the lower lip?
Alcohol consumption
What initial appearance can cancers of the oral cavity have in the early stages?
Smooth surface
What is the initial stage of squamous cell carcinoma before invasion?
Carcinoma in situ
Which site is NOT a common distant metastasis location for squamous cell carcinoma?
Stomach
Which of the following is considered a premalignant lesion of squamous cell carcinoma?
Leukoplakia
What is the most common incriminated factor for leukoplakia and erythroplakia?
The use of tobacco products
Which of the following lesions is much less common but more serious than leukoplakia?
Erythroplakia
At what age range are leukoplakia and erythroplakia usually found?
40-70 years
What is the accepted cause of hairy leukoplakia?
Epstein-Barr virus (EBV)
In which condition are hairy leukoplakia lesions commonly found?
HIV/AIDS
Which of the following is NOT a common growth pattern of squamous cell carcinoma (SCC) of the esophagus?
Pedunculated
Most squamous cell carcinomas of the esophagus are characterized as:
Moderately to well-differentiated
Which of the following statements about the spread of squamous cell carcinoma (SCC) of the esophagus is TRUE?
Tumors in the upper third tend to spread to cervical lymph nodes.
What is the approximate 5-year survival rate for patients with superficial esophageal carcinoma?
75%
Which of the following statements about adenocarcinoma of the esophagus is FALSE?
It is more common in the upper third of the esophagus.
What is the approximate lifetime risk for cancer development from Barrett's esophagus?
10%
Learn about squamous cell carcinoma, the most common type of head and neck cancer that often originates in the oral cavity. Explore the factors influencing its pathogenesis and the survival rates associated with different stages of the disease.
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