scholarly journals A Study on Morphological Variations of Fissures and Lobes of Human Lungs with its Clinical Significance

2019 ◽  
Vol 8 (2) ◽  
pp. 21-25
Author(s):  
Dil Islam Mansur ◽  
Nabin Bista ◽  
Pragya Shrestha ◽  
Sunima Maskey
Keyword(s):  
Clinical Significance ◽  
Clinical Diagnosis ◽  
Surgical Procedures ◽  
Lower Lobe ◽  
Morphological Variations ◽  
Human Lungs ◽  
Wide Range ◽  
The Right ◽  
Oblique Fissure ◽  
Accessory Fissure

Background: Fissures of lungs facilitate the movement of lobes which helps in expansion of lungs during breathing.  The fissures may be complete, incomplete or absence. Sometime the accessory fissures may also present. Awareness of variations is essential during segmental resections as well as during radiological interpretation of lungs. Hence, the present study was aimed to study the morphological variations in fissures and lobes. Material and Methods: This study was consisted of sixty nine human lungs with irrespective of sex which were available in the department of anatomy of various medical colleges. All lung specimens were carefully observed and recorded for the presence of any variations in fissures and lobes. Results: The present study revealed that the absence of horizontal fissure was observed in 7.89%, while no specimen showed absence of oblique fissure on both sides. 35.48% of left lungs had incomplete oblique fissure compared to 28.95% of the right lungs. In addition, 22.58% of right lungs and 23.68% of left lungs showed presence of accessory fissure and lobes. From above, the incomplete and absent horizontal fissure was the most common abnormalities observed in this study. The accessory fissures were more common in lower lobe of right lung whereas in left lungs it was more common in upper lobe. Conclusion: The present study showed the wide range of variations in fissures and lobes of lungs. The knowledge of variations in morphology of lungs would be helpful for clinical diagnosis and pulmonary surgical procedures.

Variations in the Morphology of Human Lungs and its Clinical Implications

2019 ◽  
Vol 36 (04) ◽  
pp. 231-236
Author(s):  
Suja Mary Jacob ◽  
Vaibhav Venniyoor ◽  
Minnie Pillay
Keyword(s):  
Pulmonary Artery ◽  
Pulmonary Veins ◽  
Clinical Implications ◽  
Proper Understanding ◽  
Endoscopic Techniques ◽  
Morphological Variations ◽  
Pulmonary Surgery ◽  
Human Lungs ◽  
The Right ◽  
Oblique Fissure

Objective To observe variations in the fissures, in the lobes, and in the hilar pattern of lungs and correlate these findings with clinical implications. Materials and Methods The present study was performed on random lung specimens available in the Department of Anatomy. A total of 96 lungs (47 right and 49 left) were studied for variations in the fissures and lobes, and 92 lungs (45 right and 47 left) for variations in the hilar pattern. Results Among the right-sided lungs, 70% presented incomplete horizontal fissure, 15% with absence of the horizontal fissure, and 51% with incomplete oblique fissure. Accessory fissures were also seen, but incomplete, and accounted for 17% of the total number of right lungs.Among the left-sided lungs, 62% presented incomplete oblique fissures, and 4% with absence of the oblique fissure. Accessory fissures accounted for 6% of the total number of left lungs.Regarding hilar pattern variations, 11% of the right-sided lungs showed > 2 bronchi, 69% showed > 2 pulmonary veins, and 37% showed > 1 pulmonary artery.Among the left-sided lungs, 57% showed > 1 bronchi, 21% showed > 2 pulmonary veins, and 17% showed > 1 pulmonary artery. Conclusion The field of pulmonary surgery is now highly advanced, with well-developed radiological and endoscopic techniques. Hence, a proper understanding and knowledge of these morphological variations of lung fissures and of the hilar pattern would be advantageous for surgeons, as well as for radiologists.

Anatomical Variation in the Fissurization of Lung with Embryological and Clinical correlations- A Case Report

2021 ◽  
Vol 12 (4) ◽  
pp. 53-56
Author(s):  
Premavathy Dr. Dinesh
Keyword(s):  
Anatomical Variation ◽  
Left Lung ◽  
Lower Lobe ◽  
Pulmonary Medicine ◽  
Male Cadaver ◽  
Embryonic Life ◽  
The Right ◽  
Spread Of Infection ◽  
Fissure Formation ◽  
Oblique Fissure

Lungs are paired conical organs present in the thoracic cavity, which are responsible for gaseous exchange for oxygenation of blood. Both the lungs are divided into lobes by fissures. The right lung is divided into upper, middle and lower lobes by two fissures. The fissures are horizontal and oblique fissure whereas the left lung is divided into upper and lower lobes by oblique fissure. The left lung is divided into upper and lower lobe by oblique fissure. Both the lungs have ten bronchopulmonary segments (structurally separate and functionally independent units). Embryological evidence showed that the lungs developed from the endodermal counterpart of the foregut. Around 22 days of embryonic period, diverticulum are develop, then between 26-28 days lung buds develop. The right bronchial buds and left bronchial buds are branched into secondary and tertiary buds at 5th and 6th week of embryonic life consecutively. During routine anatomy dissection and demonstration in the Department of Anatomy, a 50 year old male cadaver showed anatomical variation in the right lung. The present study observed that the right lung showed partial horizontal fissure. The reason for partial or incomplete fissure formation is due to incomplete or absence of obliteration of prenatal fissure which indicates partial fusion of lobes, generally fissures separating the broncho-pulmonary segments in prenatal life. The reports says that incomplete fissures of the lung may lead to spread of infection like pneumonia to adjacent lobe and collapse in endobronchial lesions and gradation of the fissures of the lungs are very important for lung surgeries. The present study concludes that the knowledge of anatomical variation of lung is of utmost important in the field of pulmonary medicine.

scholarly journals Bilateral Variation in the Origin and Course of the Vertebral Artery

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Aprajita Sikka ◽  
Anjali Jain
Keyword(s):  
Vertebral Artery ◽  
Aortic Arch ◽  
Clinical Significance ◽  
Surgical Procedures ◽  
Cervical Vertebra ◽  
Left Vertebral Artery ◽  
Incomplete Knowledge ◽  
The Third ◽  
Great Vessels ◽  
The Right

Understanding the great vessels of the aortic arch and their variations is important for both the endovascular interventionist and the diagnostic radiologist. An understanding of the variability of the vertebral artery remains most important in angiography and surgical procedures where an incomplete knowledge of anatomy can lead to serious implications. In the present case, a bilateral variation in the origin and course of vertebral artery was observed. The left vertebral artery took origin from the arch of aorta and entered the foramen transversarium of the fourth cervical vertebra. The right vertebral artery took origin from the right subclavian artery close to its origin and entered the foramen transversarium of the third cervical vertebra. The literature on the variations of the artery is studied and its clinical significance and ontogeny is discussed.

scholarly journals Bilobed right lung: a case of absent horizontal fissure

2021 ◽  
Vol 9 (4) ◽  
pp. 1225
Author(s):  
Ankita Chauhan ◽  
Suman Yadav ◽  
Nitin Patiyal
Keyword(s):  
Developmental Process ◽  
Left Lung ◽  
Thoracic Cavity ◽  
Human Cadaver ◽  
Normal Anatomy ◽  
Thoracic Region ◽  
Human Lungs ◽  
Anatomical Knowledge ◽  
The Right ◽  
Oblique Fissure

The human lungs are organs of respiration present in the greater part of thoracic cavity on each side of heart in the mediastinum resting on diaphragm. The right lung is classically divided into three lobes namely superior, middle and inferior by the oblique and horizontal fissures. The left lung is divided into superior and inferior lobes by a single deep oblique fissure. The fissures help in expansion of lungs during respiration. During the routine dissection of thoracic region of human cadaver, bilobed right lung with absent horizontal fissure was observed. The right lung was divided into superior and inferior lobe by a single oblique fissure. The left lung had normal anatomy in this case. The variations in the fissures and lobar pattern of lungs are common and are due to altered developmental process during intrauterine life. The anatomical knowledge of these disparities in fissures is important for clinicians prior to performing any pulmonary surgical procedures and to prevent postoperative complications. 

scholarly journals Application of CT images based on the optimal atlas segmentation algorithm in the clinical diagnosis of Mycoplasma Pneumoniae Pneumonia in Children

2021 ◽  
Vol 37 (6-WIT) ◽  
Author(s):  
Xilin Fu ◽  
Ningfei Yang ◽  
Jianwei Ji
Keyword(s):  
Clinical Diagnosis ◽  
Mycoplasma Pneumoniae ◽  
Lower Lobe ◽  
Ct Images ◽  
Segmentation Algorithm ◽  
Mycoplasma Pneumonia ◽  
The Right ◽  
Imaging Signs ◽  
Atlas Segmentation ◽  
Mycoplasma Pneumoniae Pneumonia

Objective: Use of optimal Atlas segmentation algorithm to study the imaging signs of mycoplasma pneumonia with multi-slice spiral CT (HRCT), and to explore the value of HRCT in the diagnosis and efficacy in evaluation of mycoplasma pneumonia in children. Methods: The study retrospectively analyzed 72 patients diagnosed with mycoplasma pneumonia in our hospital from January 2017 to January 2019. The imaging data and clinical data of 72 patients were collected. The optimal Atlas segmentation algorithm was used to analyze the characteristics of CT examination, and the value of CT in the diagnosis of mycoplasma pneumonia and the evaluation of curative effect was summarized. Results: Among all patients, 37 cases were unilateral lesions, 35 cases were bilateral lesions, 19 cases were in the left upper lobe, 24 cases were in the left lower lobe, 21 cases were in the right upper lobe, 13 cases were in the right middle lobe, 25 The lesion was located in the right lower lobe. The main CT findings of the lesions before treatment were large patchy, spot-shaped shadows, and strip-shaped or ground-glass shadows. After treatment, the main CT findings of the lesions were reduced lesion density and reduced lesion range. Conclusion: CT can clearly show the pulmonary lesions of mycoplasma pneumonia, and its unique imaging signs can improve the clinical diagnosis accuracy. In addition, CT scans can evaluate the treatment effect according to the changes in the characteristics of the lesion, which has important value for the evaluation of the effect for clinical diagnosis and efficacy evaluation of mycoplasma pneumonia. doi: https://doi.org/10.12669/pjms.37.6-WIT.4860 How to cite this:Fu X, Yang N, Ji J. Application of CT images based on the optimal atlas segmentation algorithm in the clinical diagnosis of Mycoplasma Pneumoniae Pneumonia in Children. Pak J Med Sci. 2021;37(6):1647-1651. doi: https://doi.org/10.12669/pjms.37.6-WIT.4860 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Non-Azygos Accessory Fissure in Right Upper Lobe Associated with Superior and Inferior Accessory Fissures in Right Lower Lobe

2012 ◽  
Vol 2 ◽  
pp. 79 ◽  
Author(s):  
Thomas Jose Eluvathingal Muttikkal ◽  
Chunli Deng
Keyword(s):  
Incidental Findings ◽  
Surgical Planning ◽  
Lower Lobe ◽  
Azygos Vein ◽  
Neoplastic Disease ◽  
Pulmonary Lobectomy ◽  
Anterior Segments ◽  
The Right ◽  
Variant Anatomy ◽  
Accessory Fissure

Accessory fissures in the lungs are common congenital variations, usually detected as incidental findings in radiographs or CT scan. Accessory fissures can act as an anatomic barrier to the spread of inflammatory or neoplastic disease, as well as due to the variant anatomy, mimic lesions. It is important to recognize the presence of accessory fissures, as they affect surgical planning of pulmonary lobectomy and segmentectomy. Accessory fissure in the right upper lobe other than due to the anomalous course of azygos vein is very rare. We report a case of non-azygos accessory fissure, between the apical and the anterior segments of right upper lobe, along with superior and inferior accessory fissures in the right lower lobe.

scholarly journals Perioperative Identification of an Accessory Fissure of the Right Lung

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Yannick Taverne ◽  
Gert-Jan Kleinrensink ◽  
Peter de Rooij
Keyword(s):  
Surgical Intervention ◽  
Functional Anatomy ◽  
Lower Lobe ◽  
Clinical Importance ◽  
Anatomical Variations ◽  
Surgical Anatomy ◽  
X Rays ◽  
Profound Knowledge ◽  
The Right ◽  
Accessory Fissure

Anatomical variations of lungs are common in clinical practice; however, they are sometimes overlooked in routine imaging. Surgical anatomy of the lung is complex and many variations are known to occur. A defective pulmonary development gives rise to variations in lobes and fissures. Morphological presentation is of clinical importance and profound knowledge of the organogenesis and functional anatomy is imperative for the interpretation and evaluation of lung pathophysiology and subsequent surgical intervention. However, appreciating them on radiographs and CT scans is difficult and they are therefore often either not identified or completely misinterpreted. As presented in this case report, an accessory fissure separating the superior segment of the right lower lobe from its native lobe was seen perioperatively and could only retrospectively be defined on X-rays and CT scan. It is imperative to keep in mind that accessory fissures can be missed on imaging studies and thus can make the surgical procedure more challenging.

scholarly journals External jugular vein: clinical significance of variations in formation and course: a case report

2016 ◽  
Vol 05 (03) ◽  
pp. 161-164
Author(s):  
Raviprasanna KH ◽  
Aditya Krishna Das
Keyword(s):  
Case Report ◽  
Clinical Significance ◽  
Surgical Procedures ◽  
Jugular Vein ◽  
Neck Region ◽  
External Jugular Vein ◽  
Cephalic Vein ◽  
Medical Sciences ◽  
The Right

AbstractKnowledge of varying patterns of formation and termination of external jugular vein is not only important for anatomists but also for surgeons operating at this level and interventional radiologists who perform transjugular procedures. Two different variations related to formation and communications of external jugular vein were observed during routine dissection for the first MBBS students in the Department of Anatomy at Sree Narayana Institute of Medical Sciences, Chalakka, Ernakulum in two different cadavers. The external jugular vein had a communicating channel with cephalic vein which traversed superficial to the clavicle on right side and in second cadaver the right external jugular vein was formed by union of undivided retromandibular vein with posterior auricular vein. Knowing the venous patterns in neck region is of paramount importance in order to avoid unnecessary bleeding during surgical procedures.

Evaluation of 99mTc-Label led Vitamin K4 as an Agent for Testicular Imaging

1991 ◽  
Vol 30 (01) ◽  
pp. 35-39 ◽  
Author(s):  
H. S. Durak ◽  
M. Kitapgi ◽  
B. E. Caner ◽  
R. Senekowitsch ◽  
M. T. Ercan
Keyword(s):  
Soft Tissue ◽  
Room Temperature ◽  
Normal Subjects ◽  
Left Testis ◽  
Wide Range ◽  
Activity Ratios ◽  
The Right ◽  
Radioactivity Levels

Vitamin K4 was labelled with 99mTc with an efficiency higher than 97%. The compound was stable up to 24 h at room temperature, and its biodistribution in NMRI mice indicated its in vivo stability. Blood radioactivity levels were high over a wide range. 10% of the injected activity remained in blood after 24 h. Excretion was mostly via kidneys. Only the liver and kidneys concentrated appreciable amounts of radioactivity. Testis/soft tissue ratios were 1.4 and 1.57 at 6 and 24 h, respectively. Testis/blood ratios were lower than 1. In vitro studies with mouse blood indicated that 33.9 ±9.6% of the radioactivity was associated with RBCs; it was washed out almost completely with saline. Protein binding was 28.7 ±6.3% as determined by TCA precipitation. Blood clearance of 99mTc-l<4 in normal subjects showed a slow decrease of radioactivity, reaching a plateau after 16 h at 20% of the injected activity. In scintigraphic images in men the testes could be well visualized. The right/left testis ratio was 1.08 ±0.13. Testis/soft tissue and testis/blood activity ratios were highest at 3 h. These ratios were higher than those obtained with pertechnetate at 20 min post injection.99mTc-l<4 appears to be a promising radiopharmaceutical for the scintigraphic visualization of testes.

Morphological Variations of The Fissures & Lobes in Cadaveric Human Lungs in Gujarat State

2012 ◽  
Vol 3 (2) ◽  
pp. 27-29
Author(s):  
DR.BHAVANA K. DAMOR ◽  
◽  
Dr.SEEMA SOLANKI ◽  
DR. S.V. KUMAR DR. S.V. KUMAR ◽  
DR. C.A. PENSI DR. C.A. PENSI
Keyword(s):  
Gujarat State ◽  
Morphological Variations ◽  
Human Lungs
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