Inflammatory Pseudotumor of the Lung With High FDG Uptake

Authors:
  • BSBernhard Schwizer
    Bernhard Schwizer
  • IBIrene Burger
    Irene Burger
  • IFIngo Fengels
    Ingo Fengels
  • RSReinhard Schläpfer
    Reinhard Schläpfer
  • CBChristian Bussmann
    Christian Bussmann
  • KSKlaus Strobel
    Klaus Strobel

Abstract
We present the case of a 23-year-old woman with 2 episodes of hemoptysis. Computed tomography showed a small mass lesion with an adjacent cyst in the left lower lobe. On whole-body fluorodeoxyglucose positron emission tomography/computed tomography, the lesion had a high focal fluorodeoxyglucose-uptake (SUVmax 21.0). Differential diagnosis included tuberculosis, fungal infection, and tumors such as bronchial carcinoma, sarcoma, or rare entities like endometriosis. Bronchoscopy with transbronchial biopsies failed to deliver a conclusive diagnosis. Lobectomy was performed, and histopathology presented an inflammatory myofibroblastic pseudotumor.

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