Table 1.
Results of the validation process for the use of the IDS dermoscopic criteria (including both descriptive and metaphoric terminology) for neoplastic dermatoses in skin of color with corresponding agreement rates (percentage of experts giving a score of 4 or 5) and mean scores for each round
| Dermoscopic parameter (Descriptive terminology) | I Round* | II Round* | Dermoscopic parameter (Metaphoric terminology) | I Round* | II Round* |
|---|---|---|---|---|---|
| 1 Lines | |||||
| Lines, reticular | 100 (4.83) | - | Pigment network | 100 (4.91) | - |
| Lines, reticular and thick | 100 (4.75) | - | Broadened network | 100 (4.91) | - |
| Lines, reticular and thin | 100 (4.58) | - | Delicate network | 100 (4.75) | - |
| Lines, reticular and thick or reticular lines that vary in color | 100 (4.66) | - | Atypical pigment network | 100 (4.91) | - |
| Lines, reticular, white | 85 (4.25) | - | - | - | - |
| Lines, reticular, hypopigmented, around brown clods | 92 (4.41) | - | Negative pigment network | 100 (4.33) | - |
| Lines, white, perpendicularly*** | 100 (4.66) | - | Shiny white streaks*** | 84.6 (4.66) | - |
| Lines, branched | 100 (4.75) | - | Branched streaks | 100 (4.66) | - |
| Lines, radial (always at periphery) | 100 (4.83) | - | Streaks | 100 (4.83) | - |
| Lines, radial and segmental | 100 (4.83) | - | Radial streaming | 100 (4.66) | - |
| Lines, radial, connected to a common base | 100 (4.75) | - | Leaflike areas | 100 (4.83) | - |
| Lines, radial, converging to a central dot or clod | 100 (4.91) | - | Spoke wheel area | 100 (4.75) | - |
| Lines, curved and thick | 100 (4.66) | - | Cerebriform pattern | 100 (4.83) | - |
| Lines, brown, curved, parallel, thin | 100 (4.66) | - | Fingerprinting | 100 (4.83) | - |
| Lines, curved and thick, in combination with clods | 100 (4.75) | - | Crypts | 100 (4.83) | - |
| Lines, parallel, short, crossing ridges (volar skin) | 100 (4.83) | - | Fibrillar pattern | 100 (4.83) | - |
| Lines, parallel, thick, on the ridges (volar skin) | 100 (4.83) | - | Parallel ridge pattern | 100 (4.75) | - |
| Lines, parallel, thin, in the furrows and crossing the ridges (volar skin) | 100 (4.83) | - | Lattice-like pattern | 100 (4.75) | - |
| Lines, parallel, thin, in the furrows (volar skin) | 100 (4.83) | - | Parallel furrows pattern | 100 (4.75) | - |
| Lines, angulated or polygonal (facial skin) | 92 (4.58) | - | Rhomboids/zig-zag pattern | 92 (4.50) | - |
| Lines, angulated or polygonal (non-facial skin) | 92 (4.50) | - | Angulated lines/polygons | 92 (4.52) | - |
| 2 Clods | |||||
| Clods, small, round or oval | 100 (4.75) | - | Globules | 100 (4.50) | - |
| Clods, brown, circumferential | 92 (4.58) | - | Rim of brown globules | 92 (4.51) | - |
| Clods, brown, yellow, or orange (rarely black) | 92 (4.52) | - | Comedo-like openings | 92 (4.41) | - |
| Clods, brown or blue, concentric (clod within a clod) | 85 (4.16) | - | Concentric globules | 92 (4.42) | - |
| Clods, brown, blue or black, concentric (clod within a clod)** | - | 100 (4.53) | Concentric globules | 100 (4.42) | - |
| Clods, brown or skin colored, large and polygonal | 100 (4.58) | - | Cobblestone pattern | 100 (4.50) | - |
| Clods, blue, large, clustered | 100 (4.52) | - | Blue-gray ovoid nests | 100 (4.75) | - |
| Clods, blue, small | 100 (4.41) | - | Blue globules | 100 (4.41) | - |
| Clods, black, small | - | 100 (4.53) | Black globules | - | 100 (4.53) |
| Clod within a clod (concentric clods) | 85 (4.25) | - | Variant of spoke wheel area | 85 (4.30) | - |
| Clods, white, shiny*** | 100 (4.66) | - | Shiny white blotches and strands*** | 100 (4.56) | - |
| Clods, pink and small | 72 (3.94) | - | Milky-red globules | 72 (3.98) | - |
| Clods, red or purple | 92 (4.41) | - | Red lacunae | 92 (4.23) | - |
| 3 Dots **** | |||||
| Dots, any color | 100 (4.83) | - | Granularity or granules | 92 (4.54) | - |
| Dots, gray | 100 (4.83) | - | Peppering | 92 (4.52) | - |
| Dots, gray, blue or black** | - | 100 (5.0) | Peppering | 100 (4.52) | - |
| Dots, gray and circles, gray | 100 (4.66) | - | Annular-granular pattern | 100 (4.58) | - |
| Dots, gray, blue or black and circles, gray, blue or black** | - | 100 (4.53) | Annular-granular pattern | 100 (4.58) | - |
| Dots or clods, white, clustered or disseminated | 92 (4.58) | - | Milia-like cyst, cloudy or starry | 100 (4.75) | - |
| Dots, white, four arranged in a square*** | 100 (4.51) | - | Rosettes*** | 92 (4.66) | - |
| Dots, peripheral, arranged in lines | 100 (4.53) | - | Linear dots | 85 (4.52) | - |
| Dots, brown, central (in the center of hypopigmented spaces between reticular lines) | 92 (4.48) | - | Targetoid dots | 92 (4.32) | - |
| 4 Circles | |||||
| Circles, white | 92 (4.58) | - | - | - | - |
| Circles, concentric | 92 (4.16) | - | Circle within a circle | 92 (4.16) | - |
| Circles, incomplete | 92 (4.33) | - | Asymmetric pigmented follicular openings | 100 (4.12) | - |
| 5 Pseudopods | |||||
| Pseudopods, circumferential or lines, radial, circumferential | 100 (4.66) | - | Starburst pattern | 100 (4.66) | - |
| 6 Structureless | |||||
| Structureless zone, brown or black | 100 (4.75) | - | Blotch | 100 (4.75) | - |
| Structureless zone, blue | 100 (4.58) | - | Blue-whitish veil | 100 (4.66) | - |
| Structureless zone, pink | 75 (3.95) | - | Milky-red areas | 72 (3.86) | - |
| Structureless zone, white | 100 (4.83) | - | Scar-like depigmentation | 100 (4.75) | - |
| Structureless zone, white, central | 100 (4.83) | - | Central white patch | 100 (4.66) | - |
| Structureless zone, polychromatic | 85 (4.33) | - | Rainbow pattern | 92 (4.41) | - |
| Structureless, red, interrupted by follicular openings | 82 (4.16) | - | Strawberry pattern | 85 (4.23) | - |
| Structureless, brown (tan), eccentric | 100 (4.58) | - | - | - | - |
| Structureless, any color | 100 (4.75) | - | Homogeneous pattern | 100 (4.83) | - |
| Structureless, brown, interrupted by follicular openings (facial skin) | 100 (4.66) | - | Pseudonetwork | 100 (4.66) | - |
| 7 Else | |||||
| Sharply demarcated, scalloped border | 100 (4.66) | - | Moth-eaten border | 100 (4.75) | - |
| Follicular plugs | - | 92 (4.69) | - | - | - |
| Erosions/Ulcerations | - | 100 (4.84) | - | - | - |
| 8 Vessels | |||||
| 8.1 Morphology | |||||
| Dots | 100 (4.75) | - | - | - | - |
| Clods | 100(4.38) | - | Red-purple lacunes | 100 (4.46) | - |
| Linear | 100 (4.75) | - | - | - | - |
| Coiled | 100 (4.58) | - | Glomerular | 100 (4.50) | - |
| Looped | 100 (4.66) | - | Hairpin | 100 (4.75) | - |
| Serpentine | 100 (4.50) | - | Linear irregular | 100 (4.58) | - |
| Helical | 100 (4.50) | - | Corkscrew | 100 (4.58) | - |
| Curved | 100 (4.44) | - | Comma | 100 (4.41) | - |
| Monomorphous | 92 (4.41) | - | - | - | - |
| Polymorphous | 100 (4.75) | - | - | - | - |
| 8.2 Arrangement | |||||
| Radial | 100 (4.66) | - | Crown vessels | 92 (4.50) | - |
| Serpiginous | 100 (4.66) | - | String of pearls | 100 (4.66) | - |
| Branched | 100 (4.78) | - | Arborizing vessels | 100 (4.83) | - |
| Clustered | 100 (4.83) | - | - | - | - |
| Centered dots | 100 (4.61) | - | Targetoid vessels | 100 (4.63) | - |
| 8.3 White color around vessels | - | 100 (4.53) | Perivascular white halo | - | 100 (4.61) |
*
Agreement rate (mean score) – Agreement rate is measured from 0% to 100%, mean score is measured from 0 to 5;
**
This parameter replaces the previous one.
***
Only visible by polarized dermoscopy.
****
Dots and clods can be best differentiated if they appear as a pattern. Multiple dots have the same size and shape (they are all small and round), multiple clods vary in size and shape. In general dots are not larger than the diameter of a terminal hair.