CT post-contrast CT bone windows

Diagnosis: Squamous cell carcinoma

Squamous cell carcinoma of the masticator space often is a consequence of SCCA in the oral cavity which is spread via perineural pathways or by direct extension from the retromolar trigone. In this case; however, the bulk of the lesion was centered in the suprazygomatic masticator space and is believed to originated in the right external auditory canal. At surgery, the tumor was found invading the temporal bone and entering the middle cranial fossa. Other entities which may be considered in the differential include metastasis and less likely osteosarcoma. Chondrosarcoma may be a consideration however these occur at the region of the temporomandibular joint. Ewing sarcoma or rhabdomyosarcoma are considerations in younger patients. Related Cases

Meningioma Metastasis SCCA