Skin markings in malignant melanoma.

Area of Science:

• Dermatology
• Oncology
• Medical Imaging

Background:

• Malignant melanoma diagnosis relies on visual cues.
• Understanding melanoma growth phases is crucial for prognosis.

Purpose of the Study:

• To investigate the relationship between skin markings and melanoma growth phases.
• To evaluate the diagnostic and prognostic significance of skin markings in malignant melanoma.

Main Methods:

• Photographic analysis of skin markings in 92 malignant melanoma cases.
• Categorization of melanomas into superficial spreading, nodular, acral lentiginous, and lentigo maligna types.

Main Results:

• Skin markings were uniformly lost in vertical growth phase and regression areas.
• Skin markings were preserved and sometimes accentuated in radial growth phase areas.
• Loss of skin markings is associated with dermal invasion and a deteriorating prognosis.

Conclusions:

• Skin markings are a valuable indicator of melanoma growth phase and prognosis.
• Loss of skin markings is a late sign of invasive melanoma, correlating with a worse outcome.