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Atypical Layering of FDG in Pleural Effusion

Eun Ji Han1, Hyukjin Yoon, Woo Hee Choi

  • 1From the Division of Nuclear Medicine, Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

Clinical Nuclear Medicine
|November 17, 2023
PubMed

Insights

Fluorodeoxyglucose (FDG) PET/CT imaging revealed unusual layering patterns in pleural effusions of 3 patients with advanced gynecological cancers, offering new insights into metastatic disease visualization.

Area of Science:

  • Oncology
  • Nuclear Medicine
  • Radiology

Background:

  • Radiopharmaceuticals commonly show diffuse or focal uptake in malignant or nonmalignant pleural effusions on gamma and PET imaging.
  • Understanding effusion patterns is crucial for accurate staging and treatment monitoring in cancer patients.

Purpose of the Study:

  • To describe and illustrate an atypical pattern of fluorodeoxyglucose (FDG) accumulation within pleural effusions.
  • To highlight the potential for varied FDG distribution in the context of metastatic gynecological cancer.

Main Methods:

  • Case series review of 3 patients with metastatic gynecological cancer undergoing PET/CT imaging.
  • Analysis of FDG uptake patterns within pleural effusions observed on PET/CT scans.

Main Results:

  • Observed atypical layering of FDG within pleural effusions, deviating from typical diffuse or focal patterns.
  • FDG PET/CT successfully visualized these unusual effusion characteristics in all 3 cases.

Conclusions:

  • Atypical FDG layering in pleural effusions can occur in metastatic gynecological cancer.
  • Recognition of this pattern is important for accurate interpretation of PET/CT scans in oncology.

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