Squamous Cell Carcinoma in Head and Neck
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Questions and Answers

Where do squamous cell carcinomas most commonly arise in the head and neck?

  • Esophagus
  • Oral cavity (correct)
  • Nasal cavity
  • Larynx

What is the 5-year survival rate of early-stage oral cancer?

  • Approximately 80% (correct)
  • Approximately 10%
  • Approximately 50%
  • Approximately 20%

Which of the following is NOT a predisposing factor for cancer of the lower lip?

  • Alcohol consumption (correct)
  • Pipe smoking
  • Chronic smoking
  • Exposure to actinic radiation (sunlight)

What initial appearance can cancers of the oral cavity have in the early stages?

<p>Smooth surface (B)</p> Signup and view all the answers

What is the initial stage of squamous cell carcinoma before invasion?

<p>Carcinoma in situ (A)</p> Signup and view all the answers

Which site is NOT a common distant metastasis location for squamous cell carcinoma?

<p>Stomach (D)</p> Signup and view all the answers

Which of the following is considered a premalignant lesion of squamous cell carcinoma?

<p>Leukoplakia (C)</p> Signup and view all the answers

What is the most common incriminated factor for leukoplakia and erythroplakia?

<p>The use of tobacco products (C)</p> Signup and view all the answers

Which of the following lesions is much less common but more serious than leukoplakia?

<p>Erythroplakia (D)</p> Signup and view all the answers

At what age range are leukoplakia and erythroplakia usually found?

<p>40-70 years (B)</p> Signup and view all the answers

What is the accepted cause of hairy leukoplakia?

<p>Epstein-Barr virus (EBV) (B)</p> Signup and view all the answers

In which condition are hairy leukoplakia lesions commonly found?

<p>HIV/AIDS (D)</p> Signup and view all the answers

Which of the following is NOT a common growth pattern of squamous cell carcinoma (SCC) of the esophagus?

<p>Pedunculated (D)</p> Signup and view all the answers

Most squamous cell carcinomas of the esophagus are characterized as:

<p>Moderately to well-differentiated (A)</p> Signup and view all the answers

Which of the following statements about the spread of squamous cell carcinoma (SCC) of the esophagus is TRUE?

<p>Tumors in the upper third tend to spread to cervical lymph nodes. (B)</p> Signup and view all the answers

What is the approximate 5-year survival rate for patients with superficial esophageal carcinoma?

<p>75% (C)</p> Signup and view all the answers

Which of the following statements about adenocarcinoma of the esophagus is FALSE?

<p>It is more common in the upper third of the esophagus. (D)</p> Signup and view all the answers

What is the approximate lifetime risk for cancer development from Barrett's esophagus?

<p>10% (B)</p> Signup and view all the answers

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