Menu
  • Home
  • Products
    • Pocket Dermoscopy Devices
    • Photo Dermoscopy Devices
    • Lumio Scopes
    • Phone & Tablet Adapters
    • Accessories
    • Head-Mounted Vision
    • Compare our Dermatoscopes
  • Service
    • Warranty
    • Care
    • Contact us
    • Troubleshooting
  • On the Spot
  • Warranty
  • Care
  • Troubleshooting
  • Contact us
  • +1-949-481-6384
  • Login
DermLite
0
  • +1-949-481-6384
  • Warranty
  • Care
  • Troubleshooting
  • Contact us
  • Login
0

Your Cart is Empty

Continue Shopping
    • $0.00 Subtotal
    • Excluding tax and shipping

    • PLEASE NOTE: DUE TO HIGH DEMAND, ORDERS SHIP WITHIN 1-2 WEEKS.

    DermLite
    • Home
    • Products
      • Pocket Dermoscopy Devices
      • Photo Dermoscopy Devices
      • Lumio Scopes
      • Phone & Tablet Adapters
      • Accessories
      • Head-Mounted Vision
      • Compare our Dermatoscopes
    • Service
      • Warranty
      • Care
      • Contact us
      • Troubleshooting
    • On the Spot
      Access Denied
      IMPORTANT! If you’re a store owner, please make sure you have Customer accounts enabled in your Store Admin, as you have customer based locks set up with EasyLockdown app. Enable Customer Accounts

      7-Point Checklist

      7-Point Checklist

      This simple 10-minute course into melanoma diagnosis using the 7-point checklist will give you an overview of pattern analysis. The 7-point checklist provides a simplification of standard pattern analysis because of the low number of features, or criteria, to identify. As with the ABCD rule, it can be easily learned and applied and has proven to be reliable in diagnosing melanoma. 

       

      Scoring Method for Diagnosis

      Major ELM CriteriaScore
      Atypical pigment network 2
      Gray-blue areas 2
      Atypical vascular pattern 2
      Minor ELM CriteriaScore
      Radial streaming (streaks) 1
      Irregular diffuse pigmentation (blotches) 1
      Irregular dots and globules 1
      Regression pattern 1

      The score for criterion presence is determined on the basis of the odds ratio.

      Odds ratios measure the capacity of each criterion of increasing the probability of a positive melanoma diagnosis.

      By simple addition of the criteria scores, a minimum total score of 3 is required for the diagnosis of melanoma.

       

      Major Criteria - Atypical Pigment Network


       

      Definition
      Prominent (hyperpigmented or broad) and irregular network

      Histological Correlates
      Hyperpigmented or broadened rete ridges with irregular shape or distribution

      Sample Lesion
      Irregular and prominent (atypical) pigment network (white arrow)
      (7-point score: 2)

      streaks (black arrowhead) 
      (score: 1)

      blotches (white arrowhead) 
      (score: 1)

      irregular dots and globules (black arrow) 
      (score: 1)

      Cutaneous melanoma, 0.45 mm thick
      (original magnification 10x)
      TOTAL SCORE: 5

       

      Major Criteria - Atypical Pigment Network


      Definition
      Prominent (hyperpigmented or broad) and irregular network

      Histological Correlates
      Hyperpigmented or broadened rete ridges with irregular shape or distribution

      Sample Lesion
      Irregular, but discrete, pigment network (score: 0)

      Regression pattern (peppering within depigmented areas, asterisk)

      The lesion is asymmetrical , with 4 colors and 3 dermoscopic structures

      irregular dots and globules (black arrow)
      (score: 1)

      Atypical Nevus
      (original magnification 10x)
      TOTAL SCORE: 1

       

      Major Criteria - Gray-Blue Areas


      Definition
      Irregular, confluent, gray-blue to whitish blue diffuse pigmentation not associated with red-blue lacunes or maple leaf pigmentation

      Histological Correlates
      Pigmented melanophages or melanocytes of midreticular dermis location

      Sample Lesion
      with a prevalence of gray-blue areas (curved black arrow) (score: 2)

      An atypical pigment network (white arrow

      streaks (black arrowhead)

      blotches (white arrowhead)
      irregular dots and globules (black arrow)

       

      Cutaneous melanoma, 1.0 mm thick

      (original magnification 10x)
      TOTAL SCORE: 7

       

      Major Criteria - Atypical Vascular Pattern


      Definition
      Linear, dotted, or globular red structures irregularly distributed outside areas of regression and associated with other melanocytic pigment patterns

      Histological Correlates
      Neovascularization or vascularized nests of amelanotic cells

      Sample Lesion
      Atypical (dotted and globular) vascular pattern (long black arrowheads) (score: 2)

      Gray-blue areas (curved black arrow)

      treaks (short black arrowhead)

      Cutaneous melanoma, 0.8 mm thick
      (original magnification 10x)
      TOTAL SCORE: 5

       

      Major Criteria - Atypical Vascular Pattern


      Definition
      Linear, dotted, or globular red structures irregularly distributed outside areas of regression and associated with other melanocytic pigment patterns

      Histological Correlates
      Neovascularization or vascularized nests of amelanotic cells

      Sample Lesion

      Commalike vessels, commonly associated with dermal papillae in compound and dermal nevi(black arrowhead) (score: 0)

      Compound melanocytic nevus
      (original magnification 10x)
      TOTAL SCORE: 5

       

      Minor Criteria - Radial Streaming (Streaks)


      Definition
      Radially and asymmetrically arranged linear or bulbous extensions at the edge of the lesion

      Histological Correlates
      Confluent radial junctional nests of melanocytes

      Sample Lesion
      Streaks (black arrowhead)

      Irregular dots and globules (thin black arrow)

      Regression pattern consists of white areas (asterisk) and peppering (thick black arrow) (score: 1)

      Cutaneous melanoma, 0.6 mm thick
      (original magnification 10x)
      TOTAL SCORE: 3

       

      Minor Criteria - Irregular Diffuse Pigmentation (Blotches)


      Definition
      Brown, gray, and black areas of diffuse pigmentation with irregular shape or distribution and abrupt end

      Histological Correlates
      Hyperpigmentation throughout all levels of the epidermis or upper dermis (in melanocytes or melanophages)

      Sample Lesion
      Blotches (white arrowhead)

      Presence of atypical pigment network (white arrow)

      Relatively symmetrical lesion with abrupt cutoff of pigment pattern, 3 colors, and 4 structures

      streaks (black arrowhead)

      Cutaneous melanoma, 0.3 mm thick
      (original magnification 10x)
      TOTAL SCORE: 4

      Minor Criteria - Irregular Dots And Globules


      Definition
      Black, brown, or blue round structures irregularly distributed within the lesion

      Histological Correlates
      Aggregates of pigment of stratum corneum, junctional, or dermis location

      Sample Lesion
      Irregular dots and globules (black arrows)

      Blotches (white arrowhead)

      Streaks (black arrowhead

      Regression pattern (white areas, thick black arrows)

      Two lesions with similar silhouettes and distribution of colors and structures (see next page)

      Compound melanocytic nevus
      (original magnification 10x)
      TOTAL SCORE: 2

       

      Minor Criteria - Irregular Dots And Globules


      Definition
      Black, brown, or blue round structures irregularly distributed within the lesion

      Histological Correlates
      Aggregates of pigment of stratum corneum, junctional, or dermis location

      Sample Lesion
      Irregular dots and globules (black arrows)

      Blotches (white arrowhead)

      Streaks (black arrowhead

      Regression pattern (white areas, thick black arrows)

      Two lesions with similar silhouettes and distribution of colors and structures (see previous page)

      Cutaneous melanoma, 0.45 mm thick
      (original magnification 10x)
      TOTAL SCORE: 2

       

      Minor Criteria - Regression Pattern


      Definition
      White scarlike depigmentation or "peppering" (speckled multiple blue-gray dots within a hypodepigmented area)irregularly distributed within the lesion

      Histological Correlates
      Areas of loss of pigmentation and fibroplasia, with scattered dermal melanophages

      Sample Lesion
      Regression pattern (black arrows)

      Irregular, discrete pigment network

      The lesion is asymmetrical, with abrupt cutoff of pigment pattern, 4 colors, and 3 dermoscopic structures

      Atypical melanocytic nevus
      (original magnification 10x)
      TOTAL SCORE: 1

      Invalid password
      Enter
      DermLite logo
      Footer
      • Search

      • Terms & Location

      • Privacy Policy

      • Patents & Trademarks

      • News

      • Books

      • DermLite & EMR

      • Dealers

      • Call us at +1-949-481-6384

      Resources
      • Who we are

      • Why dermoscopy

      • What is DermLite

      • Books

      • Apps & Links

      • Dermoscopy Videos

      • EMR integration

      • Regulatory

      Share...

      ...your love of dermoscopy!

      © 2025 DermLite. All rights reserved. POS and Ecommerce by Shopify

      American Express Apple Pay Diners Club Discover Google Pay Mastercard PayPal Shop Pay Visa

      Get the DermLite newsletter

      Stay on top of the latest developments in dermoscopy and beyond