Table 2.

Dermoscopic Diagnoses by Lesion Category and Proficiency Standard

CategoryLevel 1 (Foundational)Level 2 (Intermediate)Neither
Nonmelanocytic lesions

  • Hemangioma

  • Sebaceous hyperplasia

  • Clear cell acanthoma

  • Seborrheic keratosis

  • Pigmented actinic keratosis

  • Merkel cell carcinoma†

  • Dermatofibroma

  • Squamous cell carcinoma in situ

  • Porokeratosois†

  • Solar lentigo

  • Keratoacanthoma

  • Basal cell carcinoma

  • Angiokeratoma

  • Xanthogranuloma‡

  • Squamous cell carcinoma

  • Lichen planus-like keratosis

  • Actinic keratosis

  • Ink spot lentigo†

Benign melanocytic lesions

  • Overview of benign nevi patterns

  • Blue nevi

  • Combined nevi†

  • Intradermal nevi

  • Spitz nevi

  • Congenital melanocytic nevi

  • Recurrent/persistent nevi

Melanoma

  • Overview of melanoma patterns

  • Acral melanoma

  • Desmoplastic melanoma†

  • Lentigo maligna melanoma

  • Nevoid melanoma†

  • Melanoma of the nail

  • Verrucous melanoma†

  • Amelanotic/hypomelanotic melanoma

Special sitesSubungual hemorrhage

  • Dermoscopic features of the face

  • Nevi of the mucosa†

  • Benign patterns of acral nevi

  • Nevi of the mucocutaneous junction†

  • Nevus of the nail

  • Lentigo of the nail

Other

  • Verruca*

  • Molluscum contagiosum*

  • Atopic dermatitis†

  • Scabies

  • Radiation tattoo*

  • Scars*

  • Venous lake*

  • ↵* Suggested by the expert focus group to add onto the Melanoma Prevention Working Group-Pigmented Lesions Subcommittee consensus-based list for dermatology residents.

  • ↵† Suggested by a panelist during round 1 of the diagnoses survey series.

  • ↵‡ Suggested by a panelist during round 2 of the diagnoses survey series.