CASE 7: mid 40's female ongoing CT scan..history witheld

Ok here's the next case..this case was provided from the prestigious Tecniscan Diagnostic Center in Guatemala City, with a Siemens Somatom 64 slice CT scan.

This are the images..feel free to click to enlarge:

Describe and conclude in 3 differential diangosis..later on I'll post the conclusion with the history of patient.