Figure 1
From: Prognostic factors for metastatic cutaneous squamous cell carcinoma of the parotid
A: Cauterized parotid tissue with inked surgical margin in upper part of field. No tumor is present in this image. B: Fibrotic parotid tissue containing nests of invasive keratinizing squamous cell carcinoma as close as 2 mm from the surgical margin. C: Poorly differentiated squamous cell carcinoma replacing most of the tissue, with involvement of the deep tissue margin (arrows).