Aseptic abscess in the abdominal wall accompanied by monoclonal gammopathy simulating the local recurrence of rectal cancer: A case report

Figure 1 Images of the mass by contrast-enhanced abdominal computed tomography and ¹⁸F-fluorodeoxyglucose-positron emission tomography. A: Computed tomography (CT) shows a low-density mass with rim enhancement adjacent to the rectus abdominis in the lower abdominal wall; B: ¹⁸F-fluorodeoxyglucose-positron emission tomography/CT shows high uptake of fluorodeoxyglucose by the mass, with a maximum standardized uptake value of 6.0. The white arrows indicate the mass.