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Pitfall of 18F-FDG PET/CT in Characterization of Relapsed Multisystem Lymphomatoid Granulomatosis

Kelly Tung, Allison C. Rosenthal, Fiona E. Craig, Jonathan B. Ashman and Ming Yang
Journal of Nuclear Medicine Technology December 2018, 46 (4) 396-397; DOI: https://doi.org/10.2967/jnmt.118.212274

Article Figures & Data

Figures

  • FIGURE 1.
    FIGURE 1.

    (A) Staging 18F-FDG PET/CT showed multiple hypermetabolic lung lesions (arrow). (B) After 6 cycles of R-CHOP therapy, all lesions resolved. (C) Seven months later, restaging 18F-FDG PET/CT showed multiple subcutaneous hypermetabolic lesions (white arrows) and a left lung hypermetabolic nodule (black arrow).

  • FIGURE 2.
    FIGURE 2.

    Contrast-enhanced brain MRI showed enhancing lesion (arrows) involving left trigeminal nerve (A), which was 18F-FDG avid (SUVmax, 6.3) on restaging 18F-FDG PET (B) and PET/MRI (C).

  • FIGURE 3.
    FIGURE 3.

    Restaging 18F-FDG PET/CT showed 18F-FDG avid subcutaneous nodule (arrows) with SUVmax of 10.3 on right anterior chest wall. Excisional biopsy confirmed grade 1 cutaneous lymphomatoid granulomatosis.

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