Table 3.
Cross-tabulation of clinical and dermoscopic features and overall patterns of poromas
| Variable | Coding | Pattern 1: 27 (23.9%) |
Pattern 2: 20 (17.7%) |
Pattern 3: 29 (25.7%) |
Pattern 4: 11 (9.7%) |
No pattern: 26 (23%) |
Total: | p-value |
|---|---|---|---|---|---|---|---|---|
| Anatomical Location† | Head or neck | 0 (0) | 0 (0) | 9 (32.1) | 3 (30.0) | 6 (24.0) | 18 (16.4) | <0.001 |
| Trunk | 0 (0) | 7 (35.0) | 10 (35.7) | 1 (10.0) | 10 (40.0) | 28 (25.4) | ||
| Hands/Feet | 24 (88.9) | 8 (40.0) | 2 (7.1) | 3 (30.0) | 1 (4.0) | 38 (34.6) | ||
| Extremities, not hands/feet | 3 (11.1) | 5 (25.0) | 7 (25.0) | 3 (30.0) | 8 (32.0) | 26 (23.6) | ||
| Diameter, mm* | Mean (SD) | 6.9 (3.7) | 11.9 (5.5) | 5.5 (5.9) | 13.3 (7.5) | 8.7 (4.5) | 8.3 (5.6) | <0.001 |
| Pigmented | Yes | 2 (7.4) | 1 (5) | 0 (0) | 4 (36.4) | 9 (34.6) | 16 (14.2) | <0.001 |
| Vessel morphology | None | 4 (14.8) | 1 (5) | 10 (34.5) | 2 (18.2) | 18 (69.2) | 35 (31) | <0.001 |
| Monomorphous | 13 (48.2) | 1 (5) | 12 (41.4) | 6 (54.6) | 5 (19.2) | 37 (32.7) | ||
| Polymorphous | 10 (37) | 18 (90) | 7 (24.1) | 3 (27.3) | 3 (11.5) | 41 (36.3) | ||
| White interlacing areas around vessels | Present | 6 (22.2) | 12 (60) | 5 (17.2) | 2 (18.2) | 1 (3.9) | 26 (23) | <0.001 |
| Collarette | Present | 12 (44.4) | 3 (15) | 1 (3.5) | 1 (9.1) | 0 (0) | 17 (15) | <0.001 |
| Keratin/scale | Present | 4 (14.8) | 2 (10) | 1 (3.5) | 6 (54.6) | 5 (19.2) | 18 (15.9) | 0.003 |
| Yellow structureless areas | Present | 13 (48.2) | 7 (35) | 10 (34.5) | 2 (18.2) | 4 (15.4) | 36 (31.9) | 0.104 |
| Branched vessels with rounded endings, any | Present | 10 (37) | 12 (60) | 9 (31) | 1 (9.1) | 2 (7.7) | 34 (30.1) | 0.001 |
| Atypical hairpin vessels | Present | 0 (0) | 7 (35) | 2 (6.9) | 4 (36.4) | 2 (7.7) | 15 (13.3) | 0.001 |
| Milky-red areas | Present | 10 (37) | 8 (40) | 1 (3.5) | 1 (9.1) | 0 (0) | 20 (17.7) | <0.001 |
| Milky-red globules | Present | 11 (40.7) | 9 (45) | 1 (3.5) | 1 (9.1) | 0 (0) | 22 (19.5) | <0.001 |
| Blood spots | Present | 16 (59.3) | 6 (30) | 5 (17.2) | 7 (63.6) | 8 (30.8) | 42 (37.2) | 0.005 |
†
Poroma anatomic location missing for three lesions.
*
Diameter missing or unable to be calculated for 26 poromas.
Percentages may not add to 100 due to rounding.