. 2021 Jan 6;157(2):1–9. doi: 10.1001/jamadermatol.2020.5213

Table 1. Dermoscopic Characteristics of Nonmelanocytic Lesions.

Diagnosis or feature	Round 1: positive response, %	Round 2: positive response, %
Basal cell carcinoma	96
Leaflike structures	96	100
Blue-gray ovoid nests	100	100
Multiple blue-gray dots and globules (buckshot scatter)	88	96
Spoke-wheellike structures/concentric structures	92	100
Ulceration/erosion	88	96
White shiny blotches and strands	85	89
Arborizing blood vessels	100	100
Short fine telangiectasias (superficial BCC)^a	62	88
Rosette sign^b	42	12
Shiny white to red structureless and milky pink areas (glasslike translucency)^a^,^b	27	12
Actinic keratosis	85
Rosette sign	77	89
Surface scale	73	85
Strawberry pattern (pink-red pseudonetwork +/– fine, wavy vessels [straight or coiled] surrounding hair follicles +/– white circles with central yellow clod [targetoid hair follicles])^c	85	96
Pigmented actinic keratosis	85
Gray dots	81	89
Annular-granular pattern (gray dots around follicular openings)	71	92
Rosette sign	85	92
Surface scale^a	89	100
Rhomboidal structures^b	62	35
White circles with central yellow clod (targetoid hair follicles^b	69	58
Gray-brown pseudonetwork^b	58	27
Moth-eaten border^a^,^b	31	20
Patent follicles^a^,^b	38	40
Bowen disease (squamous cell carcinoma in situ)	89
Surface scale	81	100
Peripheral brown/gray dots arranged linearly (pigmented SCCIS)	77	92
Glomerular (coiled)/dotted blood vessels^d	96	100
Brown circles (pigmented SCCIS)^b	54	27
Keratoacanthoma	85
Central keratin mass	92	100
Hairpin (looped) or serpentine (linear-irregular) blood vessels, usually at the periphery, with white-yellow halo^e	96	100
Squamous cell carcinoma	96
Yellow keratin mass/scale-crust	85	100
Ulceration/blood spots/hemorrhage^f	77	81
White circles (“keratin pearls”)	85	96
Rosette sign	81	92
Glomerular (coiled) blood vessels	88	100
Hairpin vessels, usually with whitish halo	92	96
Polymorphic blood vessel morphology^a^,^b	42	28
Linear irregular (serpentine) blood vessels^a^,^b	42	32
Solar lentigo	96
Moth-eaten (sharply demarcated) borders	100	100
Homogenous light brown pigmentation	92	92
Networklike structures	77	85
Fingerprintlike structures (parallel lines)^g	96	100
Simple lentigo (lentigo simplex) 85%
Symmetric with uniform pigment network	88	85
Seborrheic keratosis	96
Milialike cysts	100	100
Comedolike openings	100	100
Moth-eaten (sharply demarcated) borders	85	100
“Fissures and ridges”/gyri and sulci/cerebriform pattern	96	100
Fat-fingers	92	100
Fingerprintlike structures	85	96
Hairpin (looped) vessels, usually with whitish halo	96	100
Networklike structures^a	62	27
Lichen planuswlike keratosis/benign lichenoid keratosis 89%
Coarse gray granularity	92	96
Peppering (evenly spaced gray dots)	92	96
Sharp, cut off borders (scalloped/moth-eaten)^a	73	84
Pinpoint/dotted blood vessels^a^,^b	31	16
Pigment network remnant^a^,^b	46	32
Hemangioma/angioma 96%
Red, blue-red, or maroon lacunae/lagoons with white septae	100	100
Blue-black coloring (when thrombosed)	100	100
Angiokeratoma	96
Red/purple/black (“dark”) lacunae	100	100
Hemorrhagic crust	88	85
Whitish veil^a	62	54
Dermatofibroma	96
Central scarlike white patch with delicate surrounding networklike structures	100	100
Ringlike globules	81	89
Central shiny white lines (crystalline structures)	96	100
Vascular structures (vascular blush) within scarlike white patch^a^,^b	50	52
Clear cell acanthoma	78
String of pearls (serpiginous) blood vessel pattern	100	100
Sebaceous hyperplasia 93%
Pale yellow lobules around a central follicular opening	100	100
Crown vessels	100	100
Poroma^a^,^b	35

Abbreviations: BCC, basal cell carcinoma; SCCIS, squamous cell carcinoma in situ.

^{^a}

Objective did not reach consensus.

^{^b}

Objective suggested by a panelist.

^{^c}

Panelists voted to use this language instead of “strawberry pattern (pink-red pseudonetwork + fine, wavy vessels [straight or coiled] surrounding hair follicles + white circles with central yellow clod [targetoid hair follicles]).”

^{^d}

Panelists voted to use this language instead of “glomerular (coiled) blood vessels.”

^{^e}

Panelists voted to use this language instead of “hairpin (looped) or serpentine (linear-irregular) blood vessels with white-yellow halo.”

^{^f}

Panelists voted to use this language instead of splitting into the 2 features “ulceration” and “blood spots/hemorrhage.”

^{^g}

Panelists voted equally between labeling this feature as “fingerprintlike structures” and “fingerprintlike structures (parallel lines). The latter was kept in order to be as inclusive as possible given equal outcomes in voting.