USMLE Exam Prep

Category - Free USMLE Practice Test Questions

Which of the following skin neoplasms is benign?
  1. Pigmented nevus
  2. Squamous cell carcinoma
  3. Melanoma
  4. Keratocanthoma
Explanation
Answer: A - Of the listed neoplasms, pigmented nevus is the only one that is benign. The other cancers are all malignant.
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