Melanoma ABCDEF Rule for Detection of Subungual Melanoma

Are you evaluating a patient with a disorder of a finger or toe nail?

Yes

Age of the patient

years

Number of nails involved

Is/Has the nail problem?

• a band that is that is black or brown?

Yes

• a band that has an irregular or blurred border?

Yes

• a band that has shown a rapid change in size?

Yes

• a band that measures >= 3 mm in width?

Yes

• responded to therapy for onychomycosis or other nail problem?

Yes

• on the thumb or hallux?

Yes

• shown an extension of pigment into the proximal or lateral nail fold?

Yes

• shown an extension of pigment into the free edge of the nail plate?

Yes

Does the patient have?

• a family history of malignant melanoma or dysplastic nevus syndrome?

Yes

• a personal history of malignant melanoma or dysplastic nevus syndrome?

Yes

Race of the patient

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Specialty

Objective

ICD-10

ABCDEF Rule of Levit et al for Detection of Subungual Melanoma

Purpose: To identify a patient who should be evaluated for a subungual melanoma based on the ABCDEF rule of Levit et al.