Dermoscopy of a pigmented basal cell carcinoma reveals which set of features MOST characteristic of this tumor type?
- A Atypical pigment network and irregular dots/globules
- B Chrysalis structures and regression (white scar-like areas)
- C Leaf-like areas, spoke-wheel structures, blue-grey ovoid nests, and arborizing telangiectasias ✓
- D Milia-like cysts and comedo-like openings
Correct answer: C. Leaf-like areas, spoke-wheel structures, blue-grey ovoid nests, and arborizing telangiectasias
Explanation
Dermoscopic features pathognomonic or highly specific for basal cell carcinoma include: arborizing (tree-like) telangiectasias, blue-grey ovoid nests, multiple blue-grey globules, leaf-like areas (maple-leaf pattern), and spoke-wheel areas. Pigmented BCC shows blue-grey nests and ovoid structures. Atypical pigment network and dots/globules are melanocytic features. Milia-like cysts and comedo openings are seborrhoeic keratosis features. Recognizing BCC on dermoscopy prevents unnecessary biopsy of vessels in amelanotic lesions.
Reference: Neena Khanna Illustrated Synopsis of Dermatology & STD, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.