case_images: PMC10355039_01
case_images: PET scan of the lung before (down) and after (up) treatment showed near complete resolution of multiple lung FDG-avid nodules.
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case_images: F1
case_images: PET (Fig. 1). PET scan also showed FDG-avid, solitary liver lesion (Fig. 2), and multiple bone lesions (Fig. 3). Four months later, she has reduced smoking to five to ten cigarettes per day, her symptoms have decreased, and a repeat PET/CT scan showed a nearly complete resolution of multiple lung lesions (Fig. 1), resolution of focal liver uptake (Fig. 2), and the L4 bone lesion (Fig. 3).
case_images: PET scan of the liver before (down) and after (up) treatment showing resolution of focal liver uptake.
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case_images: F2
case_images: PET (Fig. 1). PET scan also showed FDG-avid, solitary liver lesion (Fig. 2), and multiple bone lesions (Fig. 3).
case_images: PET scan of the vertebral bone (down) and after (up) treatment showing near complete resolution of the L4 bone lesion.
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case_images: F3
case_images: Four months later, she has reduced smoking to five to ten cigarettes per day, her symptoms have decreased, and a repeat PET/CT scan showed a nearly complete resolution of multiple lung lesions (Fig. 1), resolution of focal liver uptake (Fig. 2), and the L4 bone lesion (Fig. 3).
case_images: Langerhans cell histiocytes infiltrate the lung parenchyma with occasional eosinophils in the background (a), CD68 (b), CD1a (c), and Langerin (d) (hematoxylin-eosin, original magnification x400 [a] and immunohistochemical stains, original magnification x400 [b-d]).
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case_images: F4
case_images: Histopathological examination of the pulmonary nodule (Fig. 4) revealed features consistent with Langerhans histiocytosis.