Glossary: S

S
SCC: Squamous Cell Carcinoma
Sclerosing: hardening
SLNB: Sentinel Lymph Node Biopsy, is a minimally invasive procedure in which a lymph node near the site of a cancerous tumor is first identified as a sentinel node and then removed for microscopic analysis. SLN biopsy is a procedure that permits intraoperative identification of the first lymph node in the lymphatic basin at highest risk for metastasis called the SLN. The SLN is reflective of the histology of the lymph nodes in the regional basin. That is, if the SLN is negative for metastatic disease, the remaining lymph nodes are also likely to be negative.
Spilus (nevus): Benign melanocytic nevus with a speckled clinical appearance which may be congenital or acquired. Although it is generally considered a benign lesion, malignant changes have been reported. The true risk is unknown but is likely to be small.
Squamous cell: an epithelial cell that is flat like a plate and form a single layer of epithelial tissue
Stratum corneum:The tough, outermost layer of the epidermis or epithelium of keratinized oral mucosa, composed of flat, closely packed, dead cells converted to keratin that continually flake away. Also called the keratin layer or corneal layer.
Stroma: The connective tissue framework of a structure, as distinguished from the tissues performing the special function of the organ or part.
Subclinical: An inapparent, asymptomatic disease.
Subungual: Beneath a nail.