case_images: PMC3961417_01
case_images: Axial, contrast-enhanced computed tomography shows a hypodense and cystic lesion with ring enhancement, located in the deep neck-space on the left side of the neck.
case_images: OL-07-04-1297-g00.jpg
case_images: PMC3961417_01_OL-07-04-1297-g00.jpg
case_images: f1-ol-07-04-1297
case_images: A contrast-enhanced computed tomography scan of the neck was performed and a hypodense predominantly cystic lesion, exhibiting ring enhancement over the left carotid space, was observed (Fig. 1).
case_images: F-18-fluorodeoxyglucose (FDG) positron emission tomography (PET) images prior to the modified radical neck dissection and radiotherapy treatment revealed no definite FDG-avid lesion, with the exception of the left level II area of the neck. (A) Axial FDG-PET. (B) Maximum intensity projection FDG-PET. The arrows identify the cervical lymph node metastasis and the standardized uptake value was 5.7.
case_images: OL-07-04-1297-g01.jpg
case_images: PMC3961417_01_OL-07-04-1297-g01.jpg
case_images: f2-ol-07-04-1297
case_images: The primary fluorodeoxyglucose (FDG) uptake site was detected by F-18-FDG positron emission tomography in the lymph nodes of the left-sided level II area of the neck, with a maximum standardized uptake value of 5.7 (Fig. 2).