Diagnostic Approaches for Cutaneous Squamous Cell Carcinoma

Recommended Biopsy Techniques

The American Academy of Dermatology recommends punch biopsy, deep shave biopsy, and excisional biopsy as acceptable diagnostic techniques for suspected cutaneous squamous cell carcinoma, with the choice depending on tumor characteristics and anatomic location 1, 2, 3
Punch or shave biopsies can detect relevant histologic characteristics for the vast majority of cSCC tumors, but the specimen size and depth must be adequate to identify aggressive growth patterns and provide accurate diagnosis 1, 2, 3

When submitting biopsy tissue, it is essential to provide key elements, including patient age and biological sex, anatomic location of the tumor, history of prior treatment at the same site, clinical size of the lesion, and risk factors such as immunosuppression, radiation treatment, and solid organ transplantation 1, 3

For suspected melanoma, the American Academy of Dermatology recommends narrow excisional biopsy with 1-3mm margins as the gold standard, and punch biopsy should only be used in highly select circumstances by specialists within multidisciplinary teams 8