Recurrent squamous cell carcinoma of the oropharynx with metastatic cervical lymph node.A, Axial T2WI shows an ill-defined irregular mass of inhomogeneous.

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Low SI on axial T2-weighted images as a sign of malignancy.
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Recurrent squamous cell carcinoma of the oropharynx with metastatic cervical lymph node.A, Axial T2WI shows an ill-defined irregular mass of inhomogeneous signal intensity involving the right side of the oropharynx. Recurrent squamous cell carcinoma of the oropharynx with metastatic cervical lymph node.A, Axial T2WI shows an ill-defined irregular mass of inhomogeneous signal intensity involving the right side of the oropharynx. An enlarged cervical lymph node (arrow) with inhomogeneous high signal intensity is also noted at the right side of the neck.B, ADC map shows low signal intensity of both the lesion and the lymph node with a mean ADC value of 1.20 ± 0.22 × 10−3 mm2/s and 1.05 ± 0.20 × 10−3 mm2/s, respectively, suggestive of tumor recurrence with metastatic lymph nodes. This was proved by biopsy. A.A.K. Abdel Razek et al. AJNR Am J Neuroradiol 2007;28:1146-1152 ©2007 by American Society of Neuroradiology