The Colosseum's exact location is unknown.
 In around 60% of cases, it is an inhomogeneous or a noncystic adnexal mass sometimes known as the "blob sign"
=== Absolute location ===An absolute location can be designated using a specific pairing of latitude and longitude in a Cartesian coordinate grid (for example, a spherical coordinate system or an ellipsoid-based system such as the World Geodetic System) or similar methods

