Presentation
Melanoma resected approximately a year earlier. Prior follow-up imaging revealed no recurrence.
Patient Data
Age: 75 years
Gender: Female
From the case:
Cerebral metastases - melanoma
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- Left parietal juxtacortical 10 mm avidly enhancing lesion, showing SWI signal drop indicative of hemorrhage.
- Similar, 5 mm right occipital cortical enhancing lesion.
- Other findings: moderate chronic small vessel ischemic changes (Fazekas II.), few small lacunar infarcts, small retention sinus cysts in both maxillary sinuses, hypoplastic left vertebral artery.
Note: the number of slices has been reduced for the 3D sequences.
From the case:
Cerebral metastases - melanoma
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Key image highlighting the features of the larger lesion on noncontrast T2, SWI, T1C+ and FLAIR sequences.
Case Discussion
Melanoma brain metastases are commonly hemorrhagic even when the lesion itself is relatively small. Absence of spontaneous T1 hyperintensity and low signal on T2W is more suggestive of an amelanotic metastasis.
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