Differentiating seborrheic keratosis from skin neoplasm

Area of Science:

• Dermatopathology
• Oncology

Background:

• Pigmented acanthotic lesions present a diagnostic challenge.
• Seborrheic keratoses can undergo reactive changes.

Purpose of the Study:

• To differentiate pigmented acanthotic lesions from melanoma.
• To understand cellular changes in irritated seborrheic keratoses.

Main Methods:

• Histopathological examination of skin lesions.
• Biopsy for definitive diagnosis.

Main Results:

• Pigmented acanthotic lesions may resemble malignant melanoma.
• Trauma or inflammation can alter seborrheic keratosis morphology.
• Cellular atypia in seborrheic keratoses can mimic basal or squamous cell epithelioma.

Conclusions:

• Biopsy is crucial for distinguishing pigmented acanthotic lesions.
• Reactive changes in seborrheic keratoses require careful interpretation to avoid misdiagnosis of skin cancer.