Correlation analysis of CD3 with general clinical features (Table 3)
The immunohistochemical staining score for the 12 patients with staining of CD3 was from 0 to 3. According to the immunohistochemical score for CD3, the patients were divided into a group with low expression of CD3 (immunohistochemical staining score for CD3 ≤1) and a group with high expression of CD3 (immunohistochemical staining score for CD3 >1). Among the 12 patients, 5 were male and 7 were female; 5 were <60 years old and 7 were ≥60 years old. The lesions were located in the nasal cavity in 7 patients, the paranasal sinus in 2 patients, the nasal cavity and paranasal sinus in 2 patients, and the nasopharynx in 1 patient. According to TNM staging, there were 6 patients with T3N0M0 and 6 patients with T4aN0M0. As of August 2020, 6 patients were still alive and 6 had died. The differences between the immunohistochemical staining scores for CD3 and the clinical characteristics of the above diseases were analyzed (Chi-squared test) and the results are shown in Table 3. There was no statistically significant difference between the groups with low and high expression of CD3 for each factor.