Guidelines on superficial soft tissue tumors: should they be revised?

99.8% (460/461) of patients with low-risk lesions <5cm were benign on histopathology. 50% (1/2) of subcutaneous, soft tissue lesions with malignancy were <5cm. Ultrasonography is highly sensitive (95.3%) and specific (100%) in characterising lipomas. This demonstrates that size alone should not be the sole indicator for escalation in investigation modalities (e.g. MRI), and that clinical assessment combined with ultrasonography is adequate in identifying low-risk lesions suitable for excision at non-sarcoma centres.