내측흉벽의 흉막 외 병변: 다절편 CT 소견 = Extrapleural Inner Thoracic Wall Lesions: Multidetector CT Findings

국문 초록 (Abstract)

흉막 외 공간은 흉부의 벽측 흉막(parietal pleura) 밖 공간을 말한다. 이 공간에 포함되거나 인접한 구조물에는 흉막 외 지방, 가슴속근막, 갈비사이근, 결체 조직, 신경, 혈관, 그리고 갈비뼈 등이 있다. 흉막외 공간은 맨속갈비사이근에 의해 내측흉벽(inner thoracic wall)과 외측흉벽(outer thoracic wall)으로 나뉜다. 내측흉벽의 흉막 외 병변은 구성성분에 따라 공기음영, 지방음영, 연부조직음영을 포함하는 병변으로 나눌 수 있다. 공기음영을 포함하는 병변에는 외상에 의한 흉막 외 공기와 기종격동의 흉막 외 파급이 있다. 두드러진 흉막 외 지방은 폐용적 감소를 일으키는 질환에서 보이며 정상인에서도 보인다. 연부조직을 포함하는 흉막 외 병변에는 흉막이나 흉벽의 감염이나 종양의 흉막 외 파급, 흉막 외 혈종 등이 있다. 저자의 논문에서는 내측흉벽의 흉막 외 병변을 분류하고 영상학적 소견들에 대해 기술하고자 한다.

다국어 초록 (Multilingual Abstract)

The extrapleural space is external to the parietal pleura in the thorax. The structures within and adjacent to this region include the fat pad, endothoracic fascia, intercostal muscles, connective tissue, nerves, vessels, and ribs. Further, the space is divided into the inner and outer thoracic wall by the innermost intercostal muscle. Extrapleural lesions in the inner thoracic wall are classified as air-containing lesions, fat-containing lesions, and soft tissue-containing lesions according on their main component. Air-containing lesions include extrapleural air from direct chest trauma and extrapleural extension from pneumomediastinum. Prominent extrapleural fat is seen in decreased lung volume conditions, and can also be seen in normal individuals. Soft tissue-containing lesions include extrapleural extensions from a pleural or chest wall infection as well as tumors and extrapleural hematoma. We classify extrapleural lesions in the inner thoracic wall and illustrate their imaging findings.

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