Primary and Secondary Lung Malignancies Treated with Percutaneous Radiofrequency Ablation: Evaluation with Follow-Up Helical CT
Gong Yong Jin1,
Jeong Min Lee2,
Yong Chui Lee3,
Young Min Han1 and
Yeong Su Lim1
1 Department of Diagnostic Radiology, Chonbuk National University Hospital,
664-14 Chonju, Chonbuk 561-712, South Korea.
2 Department of Radiology and Institute of Radiation Medicine, Seoul National
University Hospital, 28 Yongondong, Chongno-gu 110-744, South Korea.
3 Department of Internal Medicine, Chonbuk National University Hospital, Chonbuk
561-712, South Korea.
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Fig. 1A. —70-year-old woman with lung cancer (adenocarcinoma) in right
lower lobe. Contrast-enhanced CT scan obtained before radiofrequency ablation
shows 3-cm dumbbell-shaped completely enhanced mass (arrow) in right
lower lobe of lung.
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Fig. 1B. —70-year-old woman with lung cancer (adenocarcinoma) in right
lower lobe. Contrast-enhanced CT scan obtained immediately after
radiofrequency ablation shows unenhanced wedge-shaped consolidation
(arrow) at same site.
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Fig. 1C. —70-year-old woman with lung cancer (adenocarcinoma) in right
lower lobe. Contrast-enhanced CT scans obtained 3 (C) and 9 (D)
months after treatment show no regrowth in lung mass (arrow).
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Fig. 1D. —70-year-old woman with lung cancer (adenocarcinoma) in right
lower lobe. Contrast-enhanced CT scans obtained 3 (C) and 9 (D)
months after treatment show no regrowth in lung mass (arrow).
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Fig. 2A. —74-year-old man with lung cancer (squamous cell carcinoma) in
left lower lobe. Contrast-enhanced CT scan obtained before radiofrequency
ablation shows 5.6-cm round completely enhanced mass (arrow) in left
lower lobe of lung.
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Fig. 2B. —74-year-old man with lung cancer (squamous cell carcinoma) in
left lower lobe. Contrast-enhanced CT scan obtained immediately after
radiofrequency ablation shows peripherally enhanced rim (arrow) in
anterior portion of lung cancer.
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Fig. 2C. —74-year-old man with lung cancer (squamous cell carcinoma) in
left lower lobe. On contrast-enhanced CT scan obtained 3 months after
treatment, ablated lung mass has decreased in diameter (3.5 cm), but it
appears as heterogeneously enhanced mass (arrow).
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Fig. 2D. —74-year-old man with lung cancer (squamous cell carcinoma) in
left lower lobe. Contrast-enhanced CT scan obtained 9 months after treatment
shows heterogeneously enhanced mass (arrow) that has grown compared
with its size on 3-month follow-up CT scan (C).
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Fig. 3A. —82-year-old man with lung cancer in right lower lobe. Axial
CT scan obtained before radiofrequency ablation shows 2-cm round mass
(arrow).
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Fig. 3B. —82-year-old man with lung cancer in right lower lobe. After
complete ablation, enveloped ground-glass opacity (arrow) appears
around tumor on immediate follow-up CT scan.
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Fig. 4A. —64-year-old man with lung cancer in right lower lobe. Axial CT scan
obtained before radiofrequency ablation shows 3-cm mass (arrow).
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Fig. 4B. —64-year-old man with lung cancer in right lower lobe. After partial
ablation, peripheral ground-glass opacity (arrow) shows part of
periphery of tumor on immediate follow-up CT scan.
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Copyright © 2004 by the American Roentgen Ray Society.
