Is invasive squamous cell carcinoma skin cancer more likely to spread than non-invasive?

Surgical excision. That is a pathological description of an excised lesion. There are two major ethos of treating a squamous cell cancers. The first is radiation, but this can leave permanent skin discoloration, and breakdown. Surgical excision with frozen echoing will help rule out.
Invasive skin cancer. Invasive squamous cell carcinoma is much worst than non invasive. The risk of cancer spread (metastasis) is significantly higher in invasive squamous cell cancer and needs more aggressive treatment that might include radiation therapy and possibly chemotherapy.