Melanocytic Naevus

Introduction to Melanocytic Naevus

Welcome to the Melanocytic Naevus subsection of the Dermatology for the MSRA course.

This section is designed to provide comprehensive and structured learning materials to help you understand and master the topic of Melanocytic Naevus for the MSRA.

Resources for Melanocytic Naevus:

1. Melanocytic Naevus Revision Notes for MSRA: Detailed and concise traditional revision notes covering all essential aspects of Melanocytic Naevus, including its causes, symptoms, diagnosis, and treatment. These notes are designed using UK NICE guidelines. Use the notes to gain an initial understanding of the topic.
2. Melanocytic Naevus Flashcards for MSRA: Interactive flashcards to help you memorise key facts and concepts about Melanocytic Naevus. These are perfect for quick reviews and reinforcing your knowledge.
3. Melanocytic Naevus Accordion Q&A Notes for the MSRA: A unique feature where you can test your understanding of Melanocytic Naevus with question-and-answer style revision notes. This format helps in active learning and retention of important information.
4. Melanocytic Naevus Rapid Fire Quiz for MSRA: A short quiz to test your knowledge and recall of Melanocytic Naevus-related concepts. This is an excellent way to assess your progress and identify areas that need further review.

We hope you find these resources helpful and engaging as you prepare for the MSRA.

Key Points about Melanocytic Naevus

• Definition: A melanocytic naevus (commonly known as a mole) is a benign proliferation of melanocytes, the pigment-producing cells of the skin, resulting in a small, pigmented lesion.
• Causes:
  • Genetic predisposition, with many naevi appearing during childhood and adolescence.
  • Exposure to ultraviolet (UV) light may influence the appearance of new naevi or changes in existing ones.
  • Hormonal changes during puberty or pregnancy can affect the number and appearance of naevi.
• Symptoms:
  • A round or oval lesion with regular borders and uniform colour, typically brown, black, or flesh-coloured.
  • May be raised or flat, and can vary in size.
  • Naevi are usually asymptomatic, but itching or changes in size, shape, or colour may require further investigation.
• Investigations:
  • Clinical examination using dermoscopy to evaluate the lesion.
  • Biopsy may be performed if there is concern for atypical features or malignancy, particularly to rule out melanoma.
• Management:
  • Most melanocytic naevi do not require treatment unless there is suspicion of malignancy or for cosmetic reasons.
  • Regular skin checks to monitor for changes in naevi, particularly in individuals with a high number of moles or a family history of melanoma.
  • Excisional biopsy is recommended for suspicious lesions to exclude melanoma.
• Complications:
  • Transformation into malignant melanoma, though this is rare.
  • Cosmetic concerns, especially with large or prominent naevi.
  • Psychological distress, particularly in individuals with multiple naevi.

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Free MSRA Podcast: Melanocytic Naevus