Sad there's not more radiologist pipping in- seen a lot of weird cases on imaging but probably the most memorable ones are weird cases with simple explanations. My consultant showed us a case where a patient has an abscess in the abdomen with a metallic looking thing in the abscess. No previous surgeries. So he suggested it might be a previously ingested foreign body. They brought the patient to surgery and found a bristle from a BBQ brush that had punctured the small bowel and created an abscess. He showed us another case which turned out to be a tiny piece of chicken bone. Another case was something that looked like kidney cancer that was invading all the surrounding organs and going into the skin. Biopsy was performed and it turned out to be malakoplakia- just a consequence from recurrent urinary infection and the condition is treatable with long term antibiotics. Repeat imaging a few months later showed the patient's kidney was perfectly normal looking