Reply:

A, SWI sequence (TR, 40 ms; TE, 49 ms) demonstrates multiple extra-axial low signal intensity foci, even inside the ventricles. B, T1-weighted image (TR, 475 ms; TE, 9.4 ms) shows that these foci have high signal intensity, some of them with a halo of low signal intensity (chemical shift artifacts), representing fat. Note the left frontotemporal craniotomy, which was performed for partial resection of an epidermoid tumor. The diagnosis of rupture of an epidermoid tumor was then suggested.