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Year : 2018  |  Volume : 14  |  Issue : 1  |  Page : 61-67

Role of inferior phrenic artery in the interventional treatment of lung metastases tumor: A report of 11 cases

Department of Interventional Therapy, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking, People's Republic of China

Correspondence Address:
Dr. Xu Zhu
Department of Interventional Therapy, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Peking
People's Republic of China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_742_17

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Background: Lung metastases have been very common in advanced cancer, which were observed in 30%–40% of cancer cases. Transarterial chemoembolization (TACE) is one of the choice for treating lung cancer. In our center, 119 cases of lung metastases were treated with TACE, and we found that inferior phrenic artery (IPA) played an important role in this procedure. Materials and Methods: From June 2011 to June 2015, 119 cases with malignant lung metastases received TACE procedure in our center. The TACE procedure was performed through bronchial artery (BA) and collateral arteries. In these 11 cases, we found that part of metastatic lesions was supplied by the IPA. Angiography and embolization technique, successful rate, safety and clinical adverse events, and survival were retrospectively studies. Results: The lung metastases were mainly supplied by BA, thoracic artery, and intercostal artery. In 11 cases, the IPA was involved in the blood supply of lung metastases (9.2%). Right IPA (RIPA), left IPA (LIPA), and both LIPA and RIPA were involved in blood supply of 6, 3, and 2 cases of lung metastases, respectively, especially for the lesions located in the lower lobe of the lung. All lesions of the 11 cases were successfully embolized; no diaphragmatic dysfunction and spinal cord injury or other serious complications were observed. The average survival time was 14.7 months since the diagnosis of lung metastases. Conclusion: The IPA was an important feeding artery for lung metastases, especially for lesions in the lower lung lobe. It should be searched as much as possible for achieving complete embolization of metastases.

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