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MR findings of malignant melanoma of the vagina

¹ Department of Radiology, The Affiliated Railway Hospital, Medical College of Tongji University, Shanghai 200072 ² Department of Radiotherapy, Handan Medical College Hospital, Handan, Hebei Province 056029, PR China

View larger version (141K): [in a new window]   Figure 1. On initial vaginal examination, the tumour with superficial ulceration was seen within the vaginal orifice.

View larger version (134K): [in a new window]   Figure 2. (a,b) Unenhanced axial and coronal spin echo (SE) T1 weighted images (TR/TE 510/14) before radiotherapy showing a large irregular mass in the vagina, involving the cervix, with multiple daughter lesions. The signal intensity of the tumour was slightly higher than that of the adjacent pelvic muscles. (c) Coronal turbo SE T2 weighted image (TR/TE 3500/90) showing an intermediate signal intensity mass. (d) Coronal SE T1 weighted image (TR/TE 510/14) showing the mass enhanced moderately after administration of gadolinium-DTPA, with the multiple small melanomas around the main tumour demonstrated more clearly.

View larger version (56K): [in a new window]   Figure 3. (a) After radiotherapy, axial spin echo T1 weighted image (TR/TE 600/14) showing shrinkage of the main tumour and a significant increase in signal intensity within the tumour. (b) Fat suppression axial T1 weighted image (TR/TE 672/14) showing the increased signal intensity of the tumour more clearly.