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halo nevus

Epidemiology: - most common in children Pathology: - benign melanocytic nevus undergoing immunologic elimination by infiltrating lymphocytes - in some cases may be a reaction to atypical nevus * histopathology images [3] Clinical manifestations: - formation of a white ring (halo) around a melancytic nevus - the halo enlarges & the nevus shrinks - a depigmented region resembling vitiligo remains - most frequently on back [1] * images [2,3] Complications: - multiple halo nevi have been associated with melanoma [1] Management: - thorough skin examination

General

melanocytic nevus (mole)

References

  1. Medical Knowledge Self Assessment Program (MKSAP) 17, 18. American College of Physicians, Philadelphia 2015, 2018.
  2. DermNet NZ. Halo moles (images) http://www.dermnetnz.org/lesions/halo-mole.html
  3. Zabawski EJ, Elston DM (images) Medscape: Halo Nevus http://emedicine.medscape.com/article/1057446-overview
  4. Weyant GW, Chung CG, Helm KF. Halo nevus: review of the literature and clinicopathologic findings. Int J Dermatol. 2015 Oct;54(10):e433-5. Review. PMID: 26146814