PURPOSE: The objective of this study was to determine the characteristic MR findings for mucosal malignant melanomas of the head and neck. METHOD: We retrospectively analyzed the MR images for six patients with this entity. T1-weighted SE images with and without gadolinium and T2-weighted fast SE images were obtained. MR images were analyzed qualitatively and quantitatively by comparing the signal intensity of the melanoma with that of muscle. RESULTS: On T1-weighted images, five melanomas were hyperintense and one was isointense. On T2-weighted images, five were of mixed intensity and one showed isointensity. The mean signal intensity ratio of the primary melanoma to muscle was 1.51 and 1.39 on T1-weighted images with and without gadolinium, respectively. These values were not statistically significant. CONCLUSION: Hyperintensity on T1-weighted images is characteristic of this entity, but not universal.
PURPOSE: The objective of this study was to determine the characteristic MR findings for mucosal malignant melanomas of the head and neck. METHOD: We retrospectively analyzed the MR images for six patients with this entity. T1-weighted SE images with and without gadolinium and T2-weighted fast SE images were obtained. MR images were analyzed qualitatively and quantitatively by comparing the signal intensity of the melanoma with that of muscle. RESULTS: On T1-weighted images, five melanomas were hyperintense and one was isointense. On T2-weighted images, five were of mixed intensity and one showed isointensity. The mean signal intensity ratio of the primary melanoma to muscle was 1.51 and 1.39 on T1-weighted images with and without gadolinium, respectively. These values were not statistically significant. CONCLUSION: Hyperintensity on T1-weighted images is characteristic of this entity, but not universal.
Authors: S K Haerle; M B Soyka; D R Fischer; K Murer; K Strobel; G F Huber; D Holzmann Journal: Eur Arch Otorhinolaryngol Date: 2011-06-29 Impact factor: 2.503
Authors: Abhishek R Keraliya; Katherine M Krajewski; Marta Braschi-Amirfarzan; Sree Harsha Tirumani; Atul B Shinagare; Jyothi P Jagannathan; Nikhil H Ramaiya Journal: Insights Imaging Date: 2015-09-03
Authors: P Grillo; A P Savoldi; R Di Meo; G Granata; G M Rodà; G Arrigoni; A M Saibene; G Franceschelli; F Patella; M Cariati Journal: Oral Radiol Date: 2020-08-09 Impact factor: 1.852