The ABCD Rule of Dermatoscopy (Total Dermatoscopic Score, TDS)

Purpose: To examine a pigmented skin lesion using the ABCD rule for dermatoscopy.

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Evaluation

Are you evaluating a pigmented skin lesion using dermatoscopy?

Yes

Number of segments show an abrupt cutoff of pigment at the margin (enter from 0 to 8)

Number of different colors present in the lesion

Is a pigment network identified?

Yes

Is a structureless or homogeneous area comprising more than10% of the lesion present?

Yes

Number of branched streaks

Number of dots

Number of globules

Degree of symmetry for contour, color & structure

Results

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Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Points for different structural components

Total score

The lesion is

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Clinical Diagnosis, Including Family History For Genetics
- The Score of Menzies et al for Pigmented Skin Lesions
Laboratory Tests
- The Epiluminescence Microscopy (ELM) 7-Point Checklist for Evaluation of a Melanocytic Skin Lesion
Other Testing
- The Epiluminescence Microscopy (ELM) 7-Point Checklist for Evaluation of a Melanocytic Skin Lesion
- The Score of Menzies et al for Pigmented Skin Lesions
Criteria For Diagnosis
- The Epiluminescence Microscopy (ELM) 7-Point Checklist for Evaluation of a Melanocytic Skin Lesion
Differential Diagnosis And Mimics, Red Flags
- The Glasgow 7-Point Checklist for Distinguishing a Benign Pigmented Skin Lesion from a Melanoma

Specialty

Dermatology
Hematology Oncology

Objective

clinical diagnosis
including family history for genetics
other testing
criteria for diagnosis

ICD-10

C43 - Malignant melanoma of skin
D22 - Melanocytic naevi

Info

Purpose: To examine a pigmented skin lesion using the ABCD rule for dermatoscopy.

Specialty: Dermatology, Hematology Oncology

Objective: clinical diagnosis, including family history for genetics, other testing, criteria for diagnosis

ICD-10: C43, D22,

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