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Air-containing space in lung adenocarcinoma: high-resolution computed tomography findings
Atsushi Nambu1, Kazuyuki Miyata, Katsura Ozawa
1Department of Radiology, Kofu Municipal Hospital, Masutsubo-cho 366, Kofu City, Yamanashi Prefecture, 400-0832 Japan. nambu-a@Comlink.ne.jp
Objective:
To disclose imaging features of air-containing spaces other than air bronchograms in lung adenocarcinoma on high-resolution computed tomography (HRCT).
Materials And Methods:
We retrospectively reviewed HRCT scans of 42 consecutive patients with surgically proved lung adenocarcinoma correlating with pathologic specimens.
Results:
Air-containing spaces were seen in 17 (40%) of cases on HRCT. The air-containing spaces appeared as multiple air densities (16 cases [94%]) with variable shapes and had a relatively larger size than that of air bronchograms. Internal septi were often noted (11 cases [65%]).
Conclusion:
Our results demonstrate that multiplicity, larger diameter, and internal septi are the features of air-containing spaces. These findings could be a key to the definitive diagnosis of lung adenocarcinoma, distinguishing it from the mimics such as organizing pneumonia, tuberculoma, or malignant lymphoma.