ArticleJapanese journal of radiology2026
MRI and CT features of head and neck myoepithelioma: comparison with parotid pleomorphic adenoma.
Article in Japanese journal of radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Imaging of benign salivary gland tumors: an update based on the fifth WHO classification, with a focus on rare histologic types and newly listed entities-part I.Japanese journal of radiology · 2026Review
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10 authors.
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Abstract
purposeTo evaluate the MRI and CT features of head and neck myoepithelioma in comparison with parotid pleomorphic adenoma.
methodsThis retrospective study included 11 patients with histopathologically confirmed myoepithelioma of the head and neck and 103 patients with pleomorphic adenoma of the parotid gland, all of whom underwent preoperative MRI. Among them, seven patients with myoepithelioma and 29 with pleomorphic adenoma also underwent preoperative CT. MRI and CT findings were compared between the two groups.
resultsMultinodular configuration (27% vs. 4%), mild hyperintensity relative to the spinal cord on T2-weighted images (91% vs. 48%), and focal unenhanced areas on fat-suppressed contrast-enhanced T1-weighted images (100% vs. 47%) were significantly more frequent in myoepithelioma than in pleomorphic adenoma, respectively (p < 0.05). In contrast, marked hyperintensity relative to the spinal cord on T2-weighted images (46% vs. 9%), higher signal intensity ratios on T2-weighted images (1.68 ± 0.47 vs. 1.40 ± 0.39), and higher apparent diffusion coefficient (ADC) values (1.68 ± 0.36 vs. 1.38 ± 0.23 × 10
conclusionsAlthough MRI and CT features of myoepithelioma and pleomorphic adenoma can overlap, the presence of a multinodular configuration, focal unenhanced areas, lower T2 signal intensity, lower ADC values, and higher contrast-enhanced CT attenuation may aid in differentiating myoepithelioma from pleomorphic adenoma.
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