Abstract
Objectives
To review the role of imaging in the diagnosis of recurrent disease in previously treated non-small cell lung cancer (NSCLC) and discuss the imaging pitfalls.
Methods
A comprehensive review of published literature on CT and PET imaging of NSCLC recurrence was performed. Diagnostic and prognostic values are discussed. Representative imaging examples are illustrated.
Results
Up to 30% of NSCLC recurrences present as loco-regional, involving treated hemithorax and ipsilateral lymph nodes, while 70% present as metachronous distant metastases. CT and PET-CT play an important role in the early detection of recurrence; indications for imaging vary depending on pathological features.
Conclusion
Imaging plays a central role in the identification of recurrence and may predict prognosis.
Key Points
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Lung cancer recurs after surgery in 30% to 75% of patients.
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CT and PET-CT are crucial in identification of loco-regional recurrence.
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Knowledge of potential pitfalls is essential, especially for parenchymal or nodal recurrence.
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CT can diagnose metastases but further examinations (PET-CT, MRI) are often needed.
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Morphological and functional imaging criteria may help in predicting recurrence.
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Caulo, A., Mirsadraee, S., Maggi, F. et al. Integrated imaging of non-small cell lung cancer recurrence: CT and PET-CT findings, possible pitfalls and risk of recurrence criteria. Eur Radiol 22, 588–606 (2012). https://doi.org/10.1007/s00330-011-2299-8
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DOI: https://doi.org/10.1007/s00330-011-2299-8