Which of the following is NOT typically associated with Conjunctival Squamous Cell Carcinoma?

• A. CIN
• B. Ultraviolet radiation
• C. Conjunctival nevus
• D. HPV

Answer: (C)

Conjunctival squamous cell carcinoma tends to develop through processes that damage the ocular surface epithelium and create precursors or promoting factors. A key precursor is conjunctival intraepithelial neoplasia, which can progress to invasive carcinoma. Ultraviolet radiation is a major environmental risk that increases DNA damage in surface tissues, elevating cancer risk. Infection with high-risk human papillomavirus types has also been linked to conjunctival squamous neoplasia in some cases. In contrast, a conjunctival nevus is a benign pigmented lesion and does not serve as a typical driver or precursor for squamous cell carcinoma; malignant change from a nevus more classically concerns melanoma rather than squamous carcinoma. So the item that does not fit as a typical association is conjunctival nevus.