Summary of CT and MR imaging features of 13 patients with MFH of the head and neck*
| Patient No./Age(yr)/Sex | CT/MR Image | Center/Extent | BD | Size (cm) | Margin | Density on Precontrast CT | T1WI | T2WI | Enhancement Pattern/Degree | Histologic Subtype |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/65/F | No/yes | Maxillary sinus/nasal cavity, orbit, buccal space, anterior cheek | Yes | 5.5 | Ill-defined | – | Mixed isointense, hypointense | Mixed isointense, hyperintense, hypointense | Heterogeneous/moderate | Inflammatory |
| 2/46/F | Yes/yes | Maxillary sinus/buccal space | Yes | 4.0 | Ill-defined | Isodense | Mixed isointense, hyperintense | Mixed isointense, hyperintense, hypointense | Heterogeneous/moderate | Inflammatory |
| 3/42/M | Yes/no | Nasal cavity/maxillary sinus, ethmoid sinus, buccal space | Yes | 5.0 | Ill-defined | Mixed isodense, slightly hypodense | – | – | Heterogeneous/mild to moderate | Myxoid |
| 4/58/M | Yes/no | Maxillary sinus/anterior cheek | Yes | 3.9 | Ill-defined | Mixed isodense, slightly hypodense | – | – | Heterogeneous/moderate | Storiform-pleomorphic |
| 5/34/M | Yes/yes | Maxillary sinus/nasal cavity, ethmoid sinus, orbit, buccal space, anterior cheek | Yes | 4.0 | Ill-defined | Isodense | Mixed isointense, hyperintense, hypointense | Mixed hyperintense, isointense, hypointense | Heterogeneous/moderate | Storiform-pleomorphic |
| 6/46/M | Yes/yes | Nasal cavity/nasopharynx, nasal septum | Yes | 4.1 | Ill-defined | – | Isointense | Mixed isointense, hypointense | Heterogeneous/moderate | Storiform-pleomorphic |
| 7/57/M | Yes/yes | Masticator space/zygomatic arch | Yes | 7.8 | Ill-defined | Isodense | Isointense | Mixed isointense and hyperintense | Heterogenous/marked | – |
| 8/30/M | Yes/yes | Masticator space/zygomatic arch, middle cranial base, middle cranial fossa | Yes | 5.8 | Ill-defined | Isodense | Mixed isointense and hyperintense | Mixed isointense and hyperintense | Heterogeneous/moderate to marked | Storiform-pleomorphic |
| 9/39/M | Yes/yes | Anterior cheek/nasal cavity, frontal process of maxilla | Yes | 4.5 | Well-defined | Slightly hypodense | Slightly hypointense | Markedly hyperintense | Homogeneous/marked | Myxoid |
| 10/24/M | Yes/no | Infraparotid lateral neck/sternocleidomastoid muscle, parotid gland | No | 6.8 | Ill-defined | – | – | – | Heterogeneous/mild to moderate | Mixed storiform-pleomorphic and myxoid |
| 11/60/M | Yes/no | Poststyloid parapharyngeal space/prevertebral space/carotid artery | No | 5.2 | Ill-defined | – | – | – | Heterogeneous/mild to moderate | Storiform-pleomorphic |
| 12/41/F | No/yes | Upper anterior gingiva/maxillary alveolar bone | Yes | 2.5 | Well-defined | – | Isointense | Hyperintense | Homogeneous/moderate | Storiform-pleomorphic |
| 13/45/F | Yes/yes | Orbital roof/orbit, facial soft tissue | Yes | 5.0 | Ill-defined | Hypodense | Isointense | Mixed isointense and hyperintense | Heterogenous/mild to moderate | Storiform-pleomorphic |
Note:—BD indicates associated bone destruction; T1WI, T1-weighted imaging; T2WI, T2-weighted imaging; MFH, malignant fibrous histiocytoma.
* Size was denoted as greatest diameter; density of the lesion was compared with that of the adjacent muscle; signal intensity of the lesion was compared with that of the cerebral cortex.