Dermoscopic criteria and basal cell carcinoma

Area of Science:

• Dermatology
• Oncology
• Medical Imaging

Background:

• Basal cell carcinoma (BCC) is the most prevalent skin cancer in fair-skinned individuals.
• Dermoscopy enhances the diagnostic accuracy of skin lesions, including early and subtle BCC.
• Accurate diagnosis is crucial for timely and effective treatment of BCC.

Purpose of the Study:

• To review and consolidate the dermoscopic criteria for diagnosing basal cell carcinoma (BCC).
• To highlight both classical and non-classical dermoscopic features of BCC.
• To emphasize the importance of recognizing diverse dermoscopic patterns for improved early diagnosis.

Main Methods:

• Review of established dermoscopic algorithms for BCC diagnosis.
• Compilation of classical dermoscopic features (e.g., lack of pigment network, ulceration, specific structures).
• Inclusion of non-classical and recently described features (e.g., pink-white areas, Chrysalides, Rosetas) and polarized dermoscopy findings.

Main Results:

• Classical BCC dermoscopy includes lack of pigment network plus specific structures like ulceration, maple-leaf like structures, blue-gray globules, blue-ovoid nests, arborizing vessels, and spoke-wheel structures.
• Non-classical features, often seen in superficial BCC, encompass pink-white areas, concentric structures, multiple erosions, blue-gray dots, and fine vessels.
• Specific dermoscopic findings for Fibroepithelioma of Pinkus and structures visible with polarized dermoscopy (white shiny streaks) are also noted.

Conclusions:

• Comprehensive knowledge of classical, non-classical, and specialized dermoscopic criteria is essential for accurate BCC diagnosis.
• Improved understanding of these dermoscopic features can prevent diagnostic errors.
• Enhanced dermoscopic expertise facilitates the early recognition of basal cell carcinoma, leading to better patient outcomes.