“…In this case, we opted to use the CT scan during the first day of the appendectomy post-op, as the patient still presented fever and pain. This exam was of extreme importance in order for us to reach a correct diagnosis, and should also be performed with the purpose of finding any other sites of residual collections in other structures, such as the vertebral column [2] . In contraposition, some authors stated that the nuclear magnetic resonance (NMR) can differentiate soft tissues more accurately, producing a clear the view of the abscess wall and its surrounding structures without the use of a radiocontrast agent, thus, making the NMR a better choice than the CT scan [18] .…”