Conjunctival Squamous Neoplasia: Staging and Initial Treatment

Area of Science:

• Ophthalmology
• Oncology
• Pathology

Background:

• Conjunctival squamous neoplasia encompasses a spectrum from conjunctival intraepithelial neoplasia (CIN) to invasive squamous cell carcinoma (SCC).
• Accurate staging is crucial for effective management and treatment planning of ocular surface tumors.

Purpose of the Study:

• To assess the clinical relevance of the American Joint Committee on Cancer (AJCC) staging system in the initial management of conjunctival squamous neoplasia.
• To determine if AJCC classification correlates with treatment decisions for these ocular tumors.

Main Methods:

• A retrospective analysis of 95 treatment-naive conjunctival squamous neoplasia cases.
• Histopathological classification into CIN (grades 1-3) and invasive SCC.
• Recording of clinical data including tumor location, size, growth pattern, and adjacent structure involvement.

Main Results:

• Conjunctival intraepithelial neoplasia (CIN) was found in 78% of cases, and invasive squamous cell carcinoma (SCC) in 22%.
• All CIN cases were staged as Tis (tumor in situ) per AJCC.
• Invasive SCCs included T1 (3), T2 (2), and T3 (16) stages; 80% of cases received complete excision.

Conclusions:

• The current AJCC staging system shows limited correlation with the initial treatment strategies for conjunctival intraepithelial neoplasia (CIN).
• The AJCC T3 category requires re-evaluation to distinguish between broad surface SCC extension and deep scleral invasion.