Joshi Asha, Mittal Pragatisheel, Rai Arpita M, Verma Ranjana, Bhandari Bharti, Razdan Shyama
Anatomy, Government Institute of Medical Sciences, Greater Noida, IND.
Anatomical Sciences, Government Institute of Medical Sciences, Greater Noida, IND.
Cureus. 2022 Mar 13;14(3):e23121. doi: 10.7759/cureus.23121. eCollection 2022 Mar.
Oblique and horizontal fissures divide the lungs into lobes. Assessing the incompleteness or absence of fissures is important when planning any surgical procedure in this region. This study aimed to investigate the incidence of variations in the fissures and their implication in clinical practice.
The sample consists of 70 formalin-fixed lungs (32 right and 38 left lungs). These lungs were assessed for complete, incomplete, and absent fissures and any variations in the fissures on the sternocostal and mediastinal surfaces.
Oblique fissure was incomplete on the sternocostal surface in 18.75% and 21% and on the mediastinal surface in 25% and 21% on the right and left lungs, respectively. Additionally, it was absent in 10.5% of the left lung samples. The horizontal fissure was incomplete in 12.5% on both surfaces and was absent in 25% on the right lung samples, of which 50% had no oblique fissure. No accessory fissure was seen in any of the lungs.
Incomplete and absent fissures can be observed in the right as well as the left lung, suggesting the source of collateral ventilation. This study imparts important information to pulmonologists doing bronchoscopic lung volume reduction therapy or bronchopulmonary segment resection and also to radiologists and anatomists.
斜裂和水平裂将肺部分为肺叶。在规划该区域的任何外科手术时，评估裂的不完整或缺失情况很重要。本研究旨在调查裂的变异发生率及其在临床实践中的意义。
样本包括70个用福尔马林固定的肺（32个右肺和38个左肺）。对这些肺的胸骨肋面和纵隔面的裂的完整性、不完整性和缺失情况以及裂的任何变异进行评估。
右肺和左肺的斜裂在胸骨肋面的不完整率分别为18.75%和21%，在纵隔面的不完整率分别为25%和21%。此外，10.5%的左肺样本中斜裂缺失。水平裂在两个面的不完整率均为12.5%，在右肺样本中的缺失率为25%，其中50%没有斜裂。在任何肺中均未发现副裂。
右肺和左肺均可观察到裂的不完整和缺失，提示侧支通气的来源。本研究为进行支气管镜下肺减容治疗或支气管肺段切除术的肺科医生以及放射科医生和解剖学家提供了重要信息。
