Comparison of visualization of a CCP on MR imaging between inverted papilloma and various malignant sinonasal tumors
| Tumor | No. of Total Subjects | No. of Subjects Showing CCP on MR Imaging | |||
|---|---|---|---|---|---|
| Diffuse | Partial | T2WI | CE-T1WI | ||
| Inverted papilloma | 30 | 26 | 4 | 28 | 30 |
| Without SCC | 22 | 22 | 0 | 20 | 22 |
| With SCC | 8 | 4 | 4 | 8 | 8 |
| Malignant tumors | 128 | 6 | 11 | 13 | 17 |
| SCC | 49 | 2 | 6 | 6 | 8 |
| Lymphoma | 39 | 0 | 0 | 0 | 0 |
| Adenoid cystic carcinoma | 10 | 1 | 1 | 1 | 2 |
| Malignant melanoma | 8 | 0 | 1 | 0 | 1 |
| Adenocarcinoma | 5 | 1 | 0 | 1 | 1 |
| Rhabdomyosarcoma | 4 | 0 | 0 | 0 | 0 |
| Esthesioneuroblastoma | 3 | 0 | 2 | 2 | 2 |
| Plasmacytoma | 3 | 0 | 0 | 0 | 0 |
| Primitive neuroectodermal tumor | 2 | 1 | 0 | 1 | 1 |
| Ameloblastic carcinoma | 1 | 0 | 0 | 0 | 0 |
| Chordoma | 1 | 0 | 0 | 0 | 0 |
| Mucoepidermoid carcinoma | 1 | 1 | 0 | 1 | 1 |
| Undifferentiated carcinoma | 1 | 0 | 1 | 1 | 1 |
| Non-keratinizing carcinoma | 1 | 0 | 0 | 0 | 0 |
Note:—CCP indicates convoluted cerebriform pattern; T2WI, T2-weighted image; CE-T1WI, contrast-enhanced T1-weighted image; SCC, squamous cell carcinoma.