Anatomical variations in lung fissures leading to supernumerary lobes in the lungs

Mpolokeng, K.S.; Louw, G.J.; Gunston, G.; Madolo, M.Y.

doi:10.1016/j.tria.2022.100209

Cited by 7 publications

(17 citation statements)

References 19 publications

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“…In this study, we found anatomical variations in the pulmonary fissures in only 7.33% of patients which was lower than Manjunath et al (22.9%), Ranaweera et al (68.42%) and other parts of the world (Table 4 ) [ 2 , 9 , 11 - 16 ].…”

Section: Discussioncontrasting

confidence: 58%

“…Present study 7.33% fissure variations Manjunath et al [2] 22.9% fissure variations Ranaweera et al [16] 68.42% fissure variations Gebregziabher et al [12] 52.17% right complete oblique fissure 47.82% right incomplete oblique fissure Mpolokeng et al [9] 5.1% right complete oblique fissure 69.2% right incomplete oblique fissure Mutua et al [13] 63.16% right complete oblique fissure 36.84% right incomplete oblique fissure Mote et al [14] 83.4% right complete oblique fissure 16.6% right incomplete oblique fissure…”

Section: Variations Of Fissuresmentioning

confidence: 77%

“…The significant difference was only seen in superior accessory fissure with respect to gender (P-value<0.05). 4) [2,9,[11][12][13][14][15][16].…”

Section: Parameters N(%)mentioning

confidence: 99%

“…To date, many studies have shown variations in the fissural anatomy of lungs leading to different lung lobar patterns [1][2][3]5,[9][10]. However, the reviewed literature from this region of the world showed a scarcity of data on anatomical variations in pulmonary fissures.…”

Section: Introductionmentioning

confidence: 99%

“…The normal pulmonary fissures include right oblique fissure, left oblique fissure and right horizontal fissure while the accessory pulmonary fissures include superior accessory fissure, inferior accessory fissure and azygos fissure. A few uncommon fissures include accessory fissures between medial and lateral segments of the right middle lobe, accessory fissures between superior and inferior segments of the lingula on left, accessory fissures between anterior basal and lateral basal segments of the lower lobes on both sides and left horizontal fissure [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Anatomical Variations in Pulmonary Fissures on Computed Tomography (CT)

Moiz¹,

Khakwani²,

Ullah³

et al. 2022

Cureus

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To determine the frequency of anatomical variations in lung fissures using computed tomography (CT) at a tertiary care hospital in Karachi, Pakistan. MethodsA cross-sectional study was conducted in the department of Radiology and Imaging Services at Memon Medical Institute Hospital, Karachi, between November 2021 to April 2022. Patients aged between 15 to 92 years with a completed high-resolution CT scan chest were included. Subjects with no significant structural lung disease that could alter the anatomy were analyzed. Baseline data was gathered using a pre-designed questionnaire, and two qualified radiologists assessed the CT chest images. ResultsA total of 382 subjects participated in this study, out of which 57.1% were males whilst 42.9% were females. The right horizontal fissure was absent in 10 (2.6%) cases. Accessory fissures were seen in 7.33%. The most common fissural variation was azygos fissure (14; 3.7%), followed by superior accessory fissure (six; 1.6%), inferior accessory fissures (four; 1%), and left horizontal fissure (four; 1%). These variations were more common in males. The significant difference was only seen in the superior accessory fissures with respect to gender (P-value<0.05). ConclusionThis study showed the presence of accessory fissures in 7.33% of patients, the most common being the azygos fissure, irrespective of gender. The absence of normal right horizontal fissures was observed in 2.6% of cases.

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Section: Discussioncontrasting

confidence: 58%

Section: Variations Of Fissuresmentioning

confidence: 77%

“…The significant difference was only seen in superior accessory fissure with respect to gender (P-value<0.05). 4) [2,9,[11][12][13][14][15][16].…”

Section: Parameters N(%)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anatomical Variations in Pulmonary Fissures on Computed Tomography (CT)

Moiz¹,

Khakwani²,

Ullah³

et al. 2022

Cureus

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Rare anatomical variations in lungs - A case report

Kaswa,

Sharma,

Pareek

et al. 2024

IJCAP

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The lungs are a pair of respiratory organs situated in a thoracic cavity. Comprising bronchi, bronchioles, and alveoli, they maximize surface area for gas exchange. Their main function is to facilitate the gaseous exchange and to contribute in maintaining the blood's acid-base balance by regulating carbon dioxide levels. They play a pivotal role in immune defence by protecting against pathogens and foreign particles. Lungs are essential for sustaining life by supporting cellular metabolism and physiological homeostasis. Their intricate structure and function make them indispensable for respiratory and overall health. During the routine dissection at the National Institute of Ayurveda, Jaipur it was observed that the number of lobes and fissures in the lungs were different from the normal anatomy of the lungs. The subject was formalin fixed a 90-year-old male cadaver of North Indian origin. This study aims to summarise rare anatomical variations of the lungs according to lobes and fissures as in addition to having numerous other therapeutic implications, structural changes in the lungs are crucial during segmental or lobar resection of the lungs.

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Morphological variations of fissures, lobes, and hilar pattern of the lung in a select South African sample

Mpolokeng,

Petersen,

Seleka

2024

Preprint

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Introduction: The lungs are essential respiratory organs divided into lobes by the horizontal and oblique fissures. The mediastinal surface of each lung consists of the hilum which allows the bronchus, pulmonary vein, and pulmonary artery to enter and exit. This study aims to investigate and record the variations in the morphology of lung fissures, lobes, and hilar patterns observed in a South African sample. Methods and Materials: This was a cross-sectional observational study with a descriptive analysis. A total of 48 formalin-fixed bodies comprising females (n = 24) and males (n = 24) from the Department of Human Biology at the University of Cape Town were studied. The fissures were classified according to the Craig and Walker criteria. Permission to conduct the study was given by the Cadaveric Research Governance Committee: CRGC 2023/006. Results and Discussion The Craig and Walker classification was used to describe the frequencies of variations observed in the study. 25 right sided and 30 left sided lungs had incomplete oblique fissures. Incomplete horizontal fissures were observed in 39 right lungs. One right lung had both an absent horizontal and oblique fissure. Accessory fissures were found in five right and 7 left lungs. Regarding the hilar pattern, variations were seen in the number and arrangement of structures of both the right and left lungs. Conclusion Variations in the completeness of fissures as well as the hilar pattern are a common occurrence. Thus, surgeons and radiologist need to be aware of these morphological variations as they may cause misdiagnosis and complications during surgical procedures.

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Anatomical variations in lung fissures leading to supernumerary lobes in the lungs

Cited by 7 publications

References 19 publications

Anatomical Variations in Pulmonary Fissures on Computed Tomography (CT)

Anatomical Variations in Pulmonary Fissures on Computed Tomography (CT)

Rare anatomical variations in lungs - A case report

Morphological variations of fissures, lobes, and hilar pattern of the lung in a select South African sample

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