Blue-White Veil: Melanoma or Seborrheic Keratosis?
Clinical Pearl
Blue-white veil is not specific for melanoma. Its diagnostic significance depends on the accompanying dermoscopic structures.
What did the study show?
This retrospective study included 231 histopathologically confirmed lesions with blue-white veil: 110 melanomas and 121 seborrheic keratoses.
The main analysis comprised 153 lesions with complete agreement among three expert readers regarding the presence of blue-white veil.
Milia-like cysts and/or comedo-like openings (MCCO) were present in:
92% of seborrheic keratoses
3% of melanomas
The combination of MCCO within the veil and complete veil coverage occurred in 56% of seborrheic keratoses but in none of the 91 melanomas.
Similarly, MCCO within the veil without additional melanoma-specific structures occurred in 37% of seborrheic keratoses and in no melanomas.
Why does this matter?
When evaluating a lesion with blue-white veil and a differential diagnosis of melanoma versus seborrheic keratosis, examine the structural context—not the veil alone.
Nonpolarized dermoscopy better demonstrated blue-white veil and MCCO, whereas polarized dermoscopy better revealed shiny white structures.
Don’t overinterpret
This was a retrospective study using a selected image dataset. The proposed algorithm was developed and assessed in the same cohort and has not been prospectively or externally validated. Sensitivity and specificity were not reported.
My take
MCCO within blue-white veil, combined with the absence of melanoma-specific structures, is a useful clue to seborrheic keratosis—but not yet a validated rule for avoiding biopsy.
Would these findings influence your biopsy decision for a lesion with blue-white veil?
Yes—MCCO without melanoma-specific features may support observation
Possibly—but only with documented short-term follow-up
No—I would still biopsy
It depends on the clinical context
Reference
Dana IN, Kurtansky NR, Pastore LM, et al. Differentiating Seborrheic Keratosis from Melanoma Among Lesions Exhibiting Blue-White Veil: A Retrospective Study. J Am Acad Dermatol. 2025;92(3):480–486.