Related Experiment Video
Updated: May 14, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
[False positive (18)F-FDG PET/CT uptake by fat necrosis during chemotherapy for malignant lymphoma]
Hiroki Akiyama1, Yoshihiro Umezawa, Yosuke Nakamura
1Department of Hematology, Ome Municipal General Hospital.
Abstract:
A 44-year-old man with advanced follicular lymphoma received 8 cycles of chemotherapy, which resulted in the complete disappearance of the original disease. However, a new abdominal mass with positive (18)F-FDG PET/CT uptake appeared after 5 cycles and this was maintained until 3 weeks after the completion of 8 cycles. Open biopsy showed a benign mass with fat necrosis. Although PET/CT is useful in evaluating residual lymphoma after chemotherapy, various benign conditions such as a result of post-chemotherapy inflammation, even in new locations without prior disease, should be noted as causes of false positive uptake.
More Related Videos
10:04Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
Published on: September 5, 2017
10:33Automated Preparation of [68Ga]Ga-3BP-3940 on a Synthesis Module for PET Imaging of the Tumor Microenvironment
Published on: April 25, 2025
Related Concept Videos
Positron Emission Tomography
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Fundamental Principles of PET