Oncology Certified Nurse (OCN) Nursing Practice Test

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Prepare for the Oncology Certified Nurse Exam with our detailed QandA format. Gain confidence with flashcards and multiple-choice questions, complete with hints and explanations to understand concepts deeply. Excel in your OCN certification journey!

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Where is squamous cell carcinoma of the esophagus most likely to arise?

  1. Cricoid cartilage

  2. Abdominal esophagus

  3. Proximal esophagus

  4. Schatzki's ring

The correct answer is: Proximal esophagus

Squamous cell carcinoma of the esophagus most commonly arises in the proximal esophagus. This area, particularly the upper third, is lined with squamous epithelial cells, making it a prime site for the development of this type of cancer. Risk factors such as smoking, alcohol consumption, and certain dietary components are more prevalent in populations susceptible to this malignancy, particularly affecting the upper parts of the esophagus. In contrast, while the cricoid cartilage is anatomically nearby, it does not serve as a site where squamous cell carcinoma originates. The abdominal esophagus, located below the diaphragm, is typically associated with adenocarcinoma due to its glandular-lined nature. Schatzki's ring is a benign condition related to esophageal strictures and does not serve as a site for squamous cell carcinoma development. Consequently, understanding the anatomy and typical localization of esophageal cancers is crucial for recognizing where squamous cell carcinoma is likely to arise.