Table 1.

Composition of test set cases according to the MPATH-Dx diagnostic category and patient age

MPATH-Dx diagnostic assessment class	Suggested Clinical Management per MPATH-Dx8	Age 20–49	Age 50–64	Age 65+	Total
(I) Nevus/mild atypia	No further treatment required	9	8	8	25
(II) Moderate atypia	Consideration of narrow but complete re-excision or follow-up observation	14	11	11	36
(III) Severe atypia/melanoma in situ	Repeat excision with at least 5 mm margins	20	21	19	60
(IV) T1a melanoma	Wide excision	19	20	19	58
(V) T1b melanoma	Wide excision with additional treatment	20	21	20	61
Totals by age		82	81	77	240

MPATH-Dx, Melanocytic Pathology Assessment Tool and Hierarchy for Diagnosis.