ArticleEuropean radiology2018
Fat necrosis after abdominal surgery: A pitfall in interpretation of FDG-PET/CT.
Article in European radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
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- Normal physiological variants and benign conditions in pelvic oncologic fluorodeoxyglucose positron emission tomography/magnetic resonance imaging.Diagnostic and interventional radiology (Ankara, Turkey) · 2026Article
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- The Utility of 68Ga-PSMA PET/CT in Decisions Regarding Administering Salvage Radiotherapy to Men with Prostate Cancer.International journal of environmental research and public health · 2022Article
- 18F-FDG PET-CT postoperative changes after maxillectomy: Findings and pitfalls in interpretation.Dento maxillo facial radiology · 2021Article
- The usefulness of [18F]FDG-PET/CT in detecting and managing cancers with unknown primary site depends on histological subtype.Scientific reports · 2021Article
- Encapsulated Omental Necrosis as an Unexpected Postoperative Finding: A Case Report.Medicina (Kaunas, Lithuania) · 2021Article
- The Utility of 18FDG-PET/CT in Diagnosing Fever of Unknown Origin: The Experience of a Large Tertiary Medical Center.International journal of environmental research and public health · 2021Article
- Penile secondary lesions: a rare entity detected by PET/CT.Scientific reports · 2021Article
- Physiologic and hypermetabolic breast 18-F FDG uptake on PET/CT during lactation.European radiology · 2021Article
- The utility of PET/CT in large vessel vasculitis.Scientific reports · 2020Article
- Article
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Authors and funding
9 authors.
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Abstract
objectiveWe describe FDG-PET/CT findings of postoperative fat necrosis in patients following abdominal surgery, and evaluate their changes in size and FDG uptake over time.
methodsFDG-PET/CT scans from January 2007-January 2016 containing the term 'fat necrosis' were reviewed. Lesions meeting radiological criteria of fat necrosis in patients with prior abdominal surgery were included.
resultsForty-four patients, 30 males, mean age 68.4 ± 11.0 years. Surgeries: laparotomy (n=37; 84.1 %), laparoscopy (n=3; 6.8 %), unknown (n=4; 9.1 %). CTs of all lesions included hyperdense well-defined rims surrounding a heterogeneous fatty core. Sites: peritoneum (n=34; 77 %), omental fat (n=19; 43 %), subcutaneous fat (n=8; 18 %), retroperitoneum (n=2; 5 %). Mean lesion long axis: 33.6±24.9 mm (range: 13.0-140.0). Mean SUVmax: 2.6±1.1 (range: 0.6-5.1). On serial CTs (n=34), lesions decreased in size (p=0.022). Serial FDG-PET/CT (n=24) showed no significant change in FDG-avidity (p=0.110). Mean SUVmax did not correlate with time from surgery (p=0.558) or lesion size (p=0.259).
conclusionPostsurgical fat necrosis demonstrated characteristic CT features and may demonstrate increased FDG uptake. However, follow-up of subsequent imaging scans showed no increases in size or FDG-avidity. Awareness of this entity is important to avoid misinterpretation of findings as recurrent cancer. KEY POINTS: • Postsurgical fat necrosis may mimic cancer in FDG-PET/CT. • Follow-up of fat necrosis showed no increase in FDG intensity. • CT follow-up showed a decrease in lesion size. • FDG uptake did not correlate with time lapsed from surgery.
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