Manjunath M, Sharma M Vishnu, Janso Kollanur, John Praveen Kumar, Anupama N, Harsha D S
Department of Respiratory Medicine, Navodaya Medical College, Raichur, Karnataka, India.
Department of Respiratory Medicine, A.J. Institute of Medical Sciences and Research Center, Kuntikana, Mangalore, Karnataka, India.
Indian J Radiol Imaging. 2022 Jan 11;31(4):797-804. doi: 10.1055/s-0041-1741045. eCollection 2021 Oct.
Refinements in the modern computed tomography (CT) imaging techniques have led to anatomical variations in the fissures of lung being diagnosed more frequently. So far, majority of the studies conducted are cadaveric. There is paucity of studies in this aspect based on chest CT images. Hence, we undertook this study to find the anatomical variations in the fissures. Prior detection of anatomical abnormalities is important to reduce postoperative complications in lung resection surgeries. This was a cross-sectional study conducted over a period of 2 years. Data were collected from the patients who underwent CT scan thorax. Patients in whom normal anatomy of lung was distorted and cases where both lungs were not visualized completely were excluded from the study. All the CT images were reviewed by a single radiologist. The presence or absence of the normal and accessory pulmonary fissures, as well as the continuity of each fissure, was recorded by the radiologist. Data were compiled and analyzed. The study population consisted of 394 (70.4%) males and 166 (29.6%) females, totaling 560 cases. Fissural variations were detected in 22.9% ( = 128). Also, 17.5% ( = 98) fissural variations were seen in males and 5.4% ( = 30) fissural variations were seen in females. Further, 54.7% ( = 70) of variations were detected in the right lung and 45.3% ( = 58) in the left lung. The most common fissural variation noted was right incomplete oblique fissure with a frequency of 8.4% cases ( = 47). The most common accessory fissure detected was inferior accessory fissure. Total 22 cases were detected in both the lungs, 17 cases in male and 5 in female. Anatomical variations in fissures were found to be more in the right lung than the left lung. Accessory fissures were detected in higher incidence on the right side.
现代计算机断层扫描（CT）成像技术的改进使得肺部裂的解剖变异被更频繁地诊断出来。到目前为止，大多数相关研究是基于尸体解剖的。基于胸部CT图像在这方面的研究较少。因此，我们开展这项研究以发现肺部裂的解剖变异。术前检测解剖异常对于减少肺切除手术的术后并发症很重要。
这是一项为期2年的横断面研究。数据收集自接受胸部CT扫描的患者。肺部解剖结构正常但被扭曲以及双肺未完全显影的患者被排除在研究之外。所有CT图像均由一名放射科医生进行评估。放射科医生记录正常和副肺裂的存在与否以及每个裂的连续性。数据进行整理和分析。
研究人群包括394名男性（70.4%）和166名女性（29.6%），共560例。发现22.9%（n = 128）存在裂变异。其中，男性中裂变异的发生率为17.5%（n = 98），女性为5.4%（n = 30）。此外，右肺变异占54.7%（n = 70），左肺占45.3%（n = 58）。最常见的裂变异是右斜裂不完全，发生率为8.4%（n = 47）。最常见的副裂是下副裂。双肺共检测到22例，其中男性17例，女性5例。
发现肺部裂的解剖变异在右肺比左肺更多见。副裂在右侧的发生率更高。
