This document discusses different types of nevi (moles), including melanocytic nevus, which can be congenital or acquired. It describes the clinical features and histopathology of junctional, compound, and intradermal nevi. Specific variants like congenital melanocytic nevus, halo nevus, Spitz nevus, and blue nevus are also covered. Blue nevus has two types, common and cellular, and its blue color is caused by the Tyndall effect. The document provides information on the presentation, characteristics, and microscopic appearance of these different nevi.

1. NEVUS
DR.G.NANDHINI
DEPT. OF ORAL PATHOLOGY
SRM DENTAL COLLEGE

2. MELANOCYTIC NEVUS
 Congenital/Developmental
 Benign proliferation of nevus cells
 Nevus cell ???

3. BASED ON STAGE OF
DEVELOPMENT/HISTOPATHOLOGY

4. ACQUIRED MELANOCYTIC
NEVUS

5. CLINICAL FEATURES
JUNCTIONAL
COMPOUND

6. CLINICAL FEATURES – ALL 3 STAGES
INTRADERMAL

7. CLINICAL FEATURES

8. ORAL MANIFESTATION
JUNCTIONAL
COMPOUND

9. HISTOPATHOLOGY - JUNCTIONAL

10. ABTROPFUNG EFFECT

11. HISTOPATHOLOGY - COMPOUND

12. HISTOPATHOLOGY - INTRADERMAL

13. HISTOPATHOLOGY

14. HISTOPATHOLOGY

18. VARIANTS
Congenital melonocytic nevus
Halo nevus
Spitz nevus
Blue nevus

19. CONGENITAL
MELANOCYTIC NEVUS

20. CLINICAL FEATURES

21. HISTOPATHOLOGY

22. HALO NEVUS

23. CLINICAL FEATURES

24. HISTOPATHOLOGY

25. SPITZ NEVUS

26. CLINICAL FEATURES

27. HISTOPATHOLOGY

28. HISTOPATHOLOGY

29. BLUE NEVUS

30. BLUE NEVUS
 Jadassohn – Tieche Nevus/Dermal melanocytoma
 2 types
 Common blue nevus
 Cellular blue nevus
 Blue colour – Tyndall effect

31. CLINICAL FEATURES

32. HISTOPATHOLOGY

33. HISTOPATHOLOGY - CELLULAR