Ring-Shaped FDG Uptake in the Right Lower Lung: Is It Always A Tumor?

Peeyush Bhargava, Hongming Zhuang, Rakesh Kumar, Jian Q. Yu, Abass Alavi

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We present 2 patients with right lung cancer whose F-18 FDG PET images showed a ring-shaped lesion in the right lower lung, suggestive of neoplastic lung mass with central necrosis. Only after correlation with the patient's history, chest radiographs, and computed tomography was it found that the ring-shaped lesion was a false-positive as a result of normal myocardial activity (from mediastinal shift secondary to a previous right pneumonectomy) in 1 patient, while a true-positive lung lesion was seen in the other.

Original languageEnglish (US)
Pages (from-to)324-325
Number of pages2
JournalClinical Nuclear Medicine
Issue number5
StatePublished - May 2004
Externally publishedYes


  • Artifact
  • FDG- PET
  • False-positive
  • Lung cancer
  • Myocardium uptake

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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