Abstract
A 72-year-old woman was admitted to the hospital because of severe abdominal pain. Abdominal echography and CT revealed DeBakey-IIIb type dissecting aneurysm and chest X-P showed a mass shadow in the right lower lobe. Conservative therapy was applied to the dissecting aneurysm prior to the evaluation of pulmonary mass shadow during hospital. After discharge the mass shadow increased in size and needle biopsy revealed a large cell carcinoma (T2N0M1) with solitary brain metastasis. At this time pseudovacuole of the aneurysm was diminished and it was in stable condition. Two staged operation for lung cancer and brain metastasis was performed about one year after the onset of dissecting aneurysm. The patient, however died of multiple brain metastasis 6 months after the operation. The coincidence of malignancy and dissecting aneurysm is rare and poses problems of management, particularly as regards the priority of the treatment. Even the treatment of lung cancer should be preceded by that of dissecting aneurysm because of high mortality in an acute phase.
