Table 2:

Contingency table on the association of temporal bone Schneiderian tumors that are primary (isolated) or secondary (synchronous or metachronous to a similar sinonasal tumor) and pathology that is malignant/high-risk (carcinoma, carcinoma in situ, or papilloma with severe/high-grade dysplasia) or benign (papilloma without severe/high-grade dysplasia)