The Diagnostic Value of Cervical Lymph Node Metastasis in Head and Neck Squamous Carcinoma by Using Diffusion-Weighted Magnetic Resonance Imaging and Computed Tomography Perfusion
Figure 1
(a): Patient with rhinal cancer. (A) Axial T1-weighted and (B) fast spin-echo-T2-weighted images showing a rounded, enlarged neck node on the left side, showing T1 and T2 signal isointensity. (C) Diffusion-weighted image (DWI) at s/mm2 showed that the node has high signal intensity. (D) On DWI inversion image, the same node exhibits low signal intensity. Mean apparent diffusion coefficient (ADC) value of the lymph node is 0.85 × 10−3 mm2/s. (E) Lymph node with metastatic squamous cell carcinoma confirmed by pathologic diagnosis (H&E staining, ×200). (b) Hyperplastic benign lymph node in a case of nasopharyngeal carcinoma. (A) Axial T1-weighted and (B) fast spin-echo-T2-weighted images showing an oval node on the left side, which demonstrates T1 and T2 signal isointensity. (C) Diffusion-weighted image (DWI) at s/mm2 shows that the node has slightly elevated signal intensity. (D) On DWI inversion image, the same node exhibits low signal intensity. The mean apparent diffusion coefficient (ADC) value of the node is 0.85 × 10−3 mm2/s. (E) Hyperplastic benign lymph node confirmed by pathologic diagnosis (H&E staining, ×200).
