Long-term survivor of metastatic squamous-cell head and neck carcinoma with occult primary after cetuximab-based chemotherapy: A case report

Figure 1 Computed tomography of the neck after intravenous injection of an iodine contrast agent. A: Arrow pointing to swollen supraclavicular and cervical lymph nodes on the left; B: Complete remission of the initially swollen supraclavicular and cervical lymph nodes on the left.

Figure 2 Lymph node with metastatic squamous cell carcinoma. A: Hematoxylin-eosin staining; B: Ki67 staining; C: p16 staining; D: p40 staining.

Figure 3 Metastatic lymph nodes para-aortic region on the left. A: Abdomen computed tomography after intravenous injection of an iodine contrast agent, arrow pointing on swollen lymph nodes; B: Fluorodeoxyglucose positron emission tomography signal positive lymph nodes in the para-aortic region.

Figure 4 Bone metastasis in the fifth lumbar bone. A: Computed tomography of the lumbar spine: arrow pointing to osseous destruction; B: Fluorodeoxyglucose positron emission tomography: Arrow pointing on signal positive bone metastasis.