mSWAT / BSA Calculator
Quantify skin burden at diagnosis and track response at follow-up visits.
Regional involvement (% of each region)
Enter non-overlapping percentages of each body region. Assign each area to one lesion type; the three values must total at most 100%. Blank fields contribute zero only after you confirm the assessment is complete.
| Region | BSA% | Patch ×1 | Plaque ×2 | Tumor ×4 |
|---|---|---|---|---|
| Head | 7 | |||
| Neck | 2 | |||
| Anterior Trunk | 13 | |||
| Arms | 8 | |||
| Forearms | 6 | |||
| Hands | 5 | |||
| Posterior Trunk | 13 | |||
| Buttocks | 5 | |||
| Thighs | 19 | |||
| Legs | 14 | |||
| Feet | 7 | |||
| Groin | 1 |
Scores
mSWAT
Not reviewed
range 0–400
Estimated TBSA
Not reviewed
App convention: review is required before displaying or copying scores. No severity band or TNMB stage is inferred.
mSWAT weights each region's involved area by the region's share of body surface area and by lesion type (patch ×1, plaque ×2, tumor ×4).
ISCL/USCLC/EORTC response consensus (2011), mSWAT