Davis S D, Yankelevitz D F, Wand A, Chiarella D A
Department of Radiology, New York Hospital-Cornell Medical Center, New York, NY 10021, USA.
Radiology. 1996 Jan;198(1):143-9. doi: 10.1148/radiology.198.1.8539368.
To investigate the anatomic basis for the juxtaphrenic peak (JP) in upper and/or middle lobe volume loss through radiographic and computed tomographic (CT) correlation.
Chest radiographs and CT scans were reviewed in 32 patients with upper or middle lobe volume loss. The study included 33 cases of volume loss: 12 affected the left upper lobe; 12, the right upper lobe; five, the right upper and middle lobes; and four, the middle lobe. JPs and linear opacities identified on chest radiographs were correlated with juxtadiaphragmatic structures on CT scans.
A JP was identified in 22 of 33 (67%) cases, including nine of 12 (75%) with left upper lobe volume loss and eight of 12 (67%) with right upper lobe, four of five (80%) with combined upper and middle lobe, and one of four (25%) with middle lobe volume loss. The JP was due to an inferior accessory fissure in 14 of 22 (64%) cases. Other causes included a medial septum and an accessory fissure other than the inferior accessory fissure.
The JP sign is seen in the majority of cases with upper lobe or combined upper and middle lobe volume loss. The sign is most commonly related to an inferior accessory fissure.
通过影像学与计算机断层扫描（CT）相关性研究，探讨上叶和/或中叶肺体积缩小中膈旁峰（JP）的解剖学基础。
回顾性分析32例上叶或中叶肺体积缩小患者的胸部X线片和CT扫描图像。本研究包括33例肺体积缩小病例：12例累及左肺上叶；12例累及右肺上叶；5例累及右肺上叶和中叶；4例累及中叶。胸部X线片上识别出的中膈旁峰（JP）和线状致密影与CT扫描图像上的膈旁结构进行相关性分析。
33例病例中有22例（67%）发现中膈旁峰（JP），其中12例左肺上叶肺体积缩小病例中有9例（75%），12例右肺上叶肺体积缩小病例中有8例（67%），5例右上叶和中叶联合肺体积缩小病例中有4例（80%），4例中叶肺体积缩小病例中有1例（25%）。22例病例中有14例（64%）的中膈旁峰（JP）是由下副裂所致。其他原因包括内侧间隔和下副裂以外的副裂。
在大多数上叶或上叶与中叶联合肺体积缩小的病例中可观察到中膈旁峰（JP）征。该征象最常见的原因是下副裂。
