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Vol.59 No.2 contents | Japanese/English |
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- Case Report -
Growth Process of Metastatic Lung Cancer with a Thin-walled Cavity
Hidejiro Torigoe1, Yutaka Hirano1, Kazuhiro Washio11Department of Thoracic Surgery, Chugoku Central Hospital, Japan
Background. Metastatic lung cancer with a cavity is relatively rare, accounting for about 4% of all cases, and many points concerning this entity remain unclear, such as the mechanism underlying the cavity formation. We herein report a case in which metastatic lung cancer with a thin-walled cavity was observed by chest computed tomography (CT) along with a discussion of the literature. Case. A 45-year-old man underwent laparoscopic high anterior resection in March 2014 for rectal cancer (MP, N1, M0, stage IIIA) followed by capecitabine administration for six months postoperatively. Chest CT showed no lung lesion in March 2014, a 4-mm thin-walled cavity in the left S10 in March 2015, and an enlarged cavity (18 mm) with thickening of a portion of the wall in March 2018. Thoracoscopic left basal segmentectomy was performed, and the pathological findings revealed a metastatic lung tumor from the rectal cancer. The growth process indicated that check valve mechanism due to tumor invasion of bronchioles caused the cavity. Conclusion. The present case is important for considering the mechanism underlying cavity formation in metastatic lung cancer.
key words: Metastatic lung cancer, Cavity, Colorectal cancer
Received: October 23, 2018
Accepted: January 16, 2019
JJLC 59 (2): 147-150, 2019
