
Comment from DIck:
As a caveat, I must mention that a CT missed a 1.6x1.6x1.6 cm mass in Regina's pelvis. The PET missed the one in her shoulder. X-ray didn't show either the tumor or the small fracture in her femur. Both PET and bone scan had areas that were suspicious, but by MRI "unremarkable." None of them are perfect.  

Comment from Jim:
I should also throw in that when the surgeon ordered an MRI prior to operating second time it came back that there was no [abdominopelvic] mass there. He wasn't very happy as he could feel it! I gather they locked the CT scan person and the MRI scan person into a room until they agreed on their interpretation.
 
Comment from doctordee:
One radiologist missed reporting on my LMS in a CXR when it was 1 cm and stage 1.  Another radiologist missed reporting on my Adrenocortical Carcinoma on a routine CT abdomen when it was 1 cm and stage 1.      Both cancers went to stage 3 before being officially reported upon.  Even when the imaging is technically good, the human error boggles the mind.  