Diffusion-Weighted MR Imaging in Evaluation of Malignant Lymphoma and Squamous Cell Carcinoma in the Head and Neck Regions | ||
| Minia Journal of Medical Research | ||
| Volume 31, Issue 4, October 2020, Pages 228-232 PDF (180.18 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjmr.2022.218097 | ||
| Authors | ||
| Dina G. Anis1; Maha E. Amer2; Amany Saber3; d Moustafa Abdel kader4 | ||
| 1Department of Oral and maxillofacial Radiology, Faculty of Dentistry, Minia University. | ||
| 2Department of Oral and maxillofacial Radiology, Faculty of Dentistry, Minia University | ||
| 3Department of Clinical Oncology Faculty of medicine, Minia University. | ||
| 4Department of Diagnostic Radiology Faculty of medicine, Minia University. | ||
| Abstract | ||
| Objective: The aim of this study was to evaluate malignant lymphoma and SCC in head and neck region with diffusion-weighted MRI. Patients and methods: Twenty two patients with histologically proven, untreated head and neck malignant lymphoma and SCC underwent DW-MRIs with b values 0, 1000 s/mm2 besides morphological sequences and corresponding ADC maps were generated. The mean ADCs were measured for both groups. We also measured ADC values of spinal cord and cerebrospinal fluid (CSF) in the upper neck area which served as an internal control. The diagnostic performance of DW- was evaluated by sensitivity and specificity at the optimum cutoff point and the area under the receiver operating characteristic curve. Result: The mean ADC for ML (0.76 ± 0.09 x 10-3 mm2 /s) was significantly lower than that for HNSCC (1.03 ± 0.2 x 10-3 mm2 /s, p<0.0001) (Table 2). A threshold ADC value of > 0.83 x 10-3 mm2 /s could be used to discriminate HNSCC from ML, with highest accuracy of 95.5 %, plus 90 % sensitivity, 100 % specificity, 100 % PPV, and 91.7 % NPV. Conclusion: Diffusion-weighted MRI when used in combination with conventional MRI techniques in head and neck imaging, provides clinically important information. The ADCs were a powerful tool for differentiating between ML and SCC. ADC values of lymphoma were significantly lower than those of SCC. | ||
| Keywords | ||
| Malignant lymphoma; squamous cell carcinoma; DW-MRI; ADC; p-value | ||
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