Clinical behavior of 100 cutaneous malignant melanomas

Area of Science:

• Dermatology
• Oncology
• Epidemiology

Background:

• Malignant melanoma is a significant public health concern.
• Understanding demographic and clinical characteristics is crucial for early detection and treatment.
• Previous nevus presence requires further investigation in melanoma development.

Purpose of the Study:

• To characterize the demographic and clinical features of 100 malignant melanoma patients in Argentina.
• To identify common melanoma subtypes, locations, and associated risk factors.
• To provide representative data on malignant melanoma within the Argentine population.

Main Methods:

• Retrospective analysis of 100 consecutive malignant melanoma patients.
• Data collection included patient demographics, skin type, nevus history, lesion characteristics, and tumor staging.
• Statistical analysis of mean ages, lesion frequencies, localizations, types, and tumor thickness.

Main Results:

• Mean age at diagnosis was 55.3 years; mean age at disease onset was 51.8 years.
• Superficial spreading malignant melanoma (SSMM) and nodular malignant melanoma (NMM) were most frequent, with SSMM on the trunk and NMM on the legs.
• Level IV (Breslow thickness 3.07 mm) was most common; NMM showed greater average thickness (6.25 mm) than SSMM (1.82 mm).

Conclusions:

• The study provides a comprehensive overview of malignant melanoma in Argentina, detailing patient demographics, lesion characteristics, and subtype prevalence.
• Findings indicate differences in age distribution and localization between SSMM and NMM.
• Further long-term follow-up is planned to analyze therapy and lesion evolution.