Possible iatrogenic or other non-pharyngeal origin infrahyoid neck infectious or inflammatory conditions including suppurative cervical lymphadenitis and infected developmental cysts leading to abscess or primary or secondary thrombophlebitis, arteritis or other complications involving the infrahyoid deep neck structures. Possible discitis, epidural abscess or prevertebral musculotendonitis.
Contrast-enhanced CT of the maxillofacial region and neck and related anatomy with images obtained in the balanced or venous vascular phase to ensure optimal visualization of both arterial and venous structures as well as possible reactive changes around infected collections. 0.5-3.0 mm thick sections were obtained in the axial plane and reformatted 3D and/or in the coronal and sagittal planes and viewed inter actively in 3 dimensions at the computer work station.
MR: Anatomically focused axial and coronal images through the face and neck region including T1 and T2 weighted acquisitions done with and without gadolinium contrast enhancement and, when indicated, MRV and fat suppression.