CT Screening for Lung Cancer
Frequency and Significance of Part-Solid and Nonsolid Nodules
Claudia I. Henschke1,
David F. Yankelevitz1,
Rosna Mirtcheva1,
Georgeann McGuinness2,
Dorothy McCauley1 and
Olli S. Miettinen3 the ELCAP Group
1 Department of Radiology, New York Presbyterian HospitalWeill Cornell
Medical Center, 525 E. 68th St., New York, NY 10021.
2 Department of Radiology, New York University Medical Center, 550 First Ave.,
New York, NY 10016.
3 Department of Medicine, New York Presbyterian HopitalWeill Cornell
Medical Center, New York, NY 10021.

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Fig. 1. High-resolution CT scan shows part-solid nodule with central
cystic space in 72-year-old man. Final pathologic diagnosis was
adenocarcinoma.
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Fig. 2. High-resolution CT scan shows part-solid nodule detected on
baseline CT in 71-year-old woman. Solid components are centrally located and
surrounded by nonsolid component. Air bronchograms are seen in solid
component. Final pathologic diagnosis was adenocarcinoma.
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Fig. 3. High-resolution CT scan reveals part-solid nodule with
spiculations and pleural tag that proved to be adenocarcinoma in 75-year-old
woman.
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Fig. 4. High-resolution CT scan depicts nonsolid nodule that proved
to be adenocarcinoma with bronchioloalveolar features in 76-year-old
woman.
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Fig. 5. Magnification of high-resolution CT scan shows nonsolid
nodule that has not yet been biopsied in 68-year-old man. No solid components
other than blood vessels are seen. Blood vessels (top arrow),
bronchus (middle arrow), and cyst or area of emphysema (bottom
arrow) can be identified.
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Fig. 6. Magnification of high-resolution CT scan reveals solid nodule
found to be adenocarcinoma in 62-year-old man.
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Copyright © 2002 by the American Roentgen Ray Society.