Abstract
Background. We report a rare case of a thin-walled cavity due to metastasis of uterine cervical cancer, which was recognized as a bulla. Case. The patient was a 46-year-old woman who had had surgery for uterine cervical cancer and renal cell cancer. Her chest computed tomography (CT) findings were normal except for a bulla in the right upper lobe. However, the wall was becoming irregularly thicker as her back pain increased. Because positron emission tomography (PET) highly suggested malignancy, the lesion was resected, resulting in a diagnosis of a lung metastasis of uterine cervical cancer. Conclusion. Generally a irregular thick wall of a lung bulla strongly suggests the possibility of malignant lesion, but in the present case the wall was thin. A cavitary lung lesion with a past history of cancer should be carefully followed.