Conjunctival SCC is staged based on the extent of tumor invasion and spread. The staging system generally includes:
Stage 0: Carcinoma in situ, confined to the surface layer of the conjunctiva.
Stage I: Tumor is confined to the conjunctiva without deeper invasion.
Stage II: Tumor has invaded deeper conjunctival tissues.
Stage III: Tumor has spread to surrounding structures or lymph nodes.
Stage IV: Advanced disease with distant metastasis.