Lesion segmentation drops the per-lesion box: one concept prompt lets SAM3 outline 11 lesion types across 13 datasets
SAM3 segments lesions from text or image-exemplar concept prompts across 13 datasets and 11 lesion types, beating SAM2 on Dice in 10 datasets, by 4.41 on ISLES22 and 5.39 on ISIC2018.