This case illustrates a secondary meningeal involvement due to a distant primary tumor. The images features are more favorable to a dural involvement than a leptomeningeal involvement. 

CNS metastases from colorectal cancer are an uncommon occurrence, with an estimated incidence of 1% to 3%.

In this case, the high signal intensity on T1 and the hyperattenuation on CT suggest hemorrhage or melanin. There was no known history of melanoma.

The patient died on the day after the MRI exam, there is no histological confirmation.