scholarly journals Pulmonary sequestration: Report of three cases

2009 ◽  
Vol 62 (5-6) ◽  
pp. 278-280
Author(s):  
Ruza Stevic ◽  
Dragan Mandaric ◽  
Dragana Jovanovic ◽  
Nada Vasic ◽  
Dragan Masulovic ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Blood Supply ◽  
Clinical Symptoms ◽  
Imaging Techniques ◽  
Case Reports ◽  
Pulmonary Sequestration ◽  
Tracheobronchial Tree ◽  
Cystic Tumor ◽  
X Ray ◽  
Systemic Arteries

Introduction Pulmonary sequestration is a non-functioning pulmonary parenchyma that is separated from tracheobronchial tree and receives its blood supply via systemic arteries. The diagnosis of sequestration pulmonis is based on clinical symptoms and characteristic radiologic findings. Case reports In this report, radiological findings of pulmonary sequester in three patients with non-resolving pneumonia were retrospectively reviewed. All patients underwent chest x-ray, computerized tomography of thorax and angiography. X-ray revealed in all cases tumorlike, unsharply bordered shadows in the posterior basal parts of the lung, two on the right and one on the left side. Computerized tomography(CT) finding showed solid-cystic tumor masses and angiography revealed anomalous blood supply from systemic arteries arising from aorta and running to the shadow in the lung. This finding is typical of bronchopulmonary sequestration. All patients were operated on and histological analysis of operative material confirmed diagnosis of intralobar pulmonary sequestration. Discussion Sequestratio pulmonis can cause a diagnostic problem due to unspecific symptoms and atypical radiographic and CT findings. Therefore, it is important to demonstrate the arterial supply and venous drainage of the sequestered segment preoperatively. Today, with the help of non-invasive imaging techniques such as CT and magnetic resonance imaging (MRI), preoperative diagnosis of pulmonary sequester can be made easily, so, invasive techniques such as angiography are not required frequently.

scholarly journals Blunt external laryngeal trauma: Two case reports

2007 ◽  
Vol 60 (9-10) ◽  
pp. 489-492
Author(s):  
Slobodan Mitrovic
Keyword(s):  
Computerized Tomography ◽  
Computer Tomography ◽  
Motor Vehicle ◽  
Clinical Symptoms ◽  
Case Reports ◽  
Thyroid Cartilage ◽  
Complete Recovery ◽  
Valve Mechanism ◽  
Laryngeal Trauma ◽  
First Case

Introduction. External laryngeal trauma, blunt or penetrating, is rare but potentially life-threatening. Most frequently it occurs in motor vehicle accidents. The most common symptoms of external laryngeal injuries are: dysphagia, odynophagia, dysphonia, odynophonia, reduction of the laryngeal prominence, hemoptysis and neck crepitation. Two case reports. This paper reviews two cases of blunt laryngeal injury caused by a direct blow to the neck. After admission, both patients underwent clinical examination, as well as radiography of the neck, and computer tomography of the neck and larynx. GIRBAS scale was used for voice analysis. In the first case, computer tomography showed a fracture of the right thyroid cartilage in the posterior lamina where it is attached to the upper horn. In the other case, the presence of air was confirmed by radiography of the upper aperture. Computerized tomography showed the presence of air in the neck, underneath the skin, which was probably the consequence of the larygeal valve mechanism trauma. Both patients were treated conservatively. Discussion and Conclusion. The symptomatology of external larygeal trauma may include: hoarseness, swallowing difficulties and/or painful swallowing, painful phonation, neck pain, bloody sputum and breathing difficulties. The clinical symptoms of blunt laryngeal trauma may be hidden and non-specific, but also clear, indicating a larynx trauma, and vice versa. Quick diagnosis using computerized tomography, hospitalization and adequate therapy, can reduce the consequences of these injuries and increase the chances for a complete recovery of larygeal musculature and function. .

Machine Learning Model for Multi-View Visualization of Medical Images

2020 ◽  
Author(s):  
Nitesh Pradhan ◽  
Vijaypal Singh Dhaka ◽  
Geeta Rani ◽  
Himanshu Chaudhary
Keyword(s):  
Magnetic Resonance Imaging ◽  
Machine Learning ◽  
Magnetic Resonance ◽  
Computerized Tomography ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
X Ray ◽  
Machine Learning Model ◽  
Tomography Scan

Abstract Imaging techniques such as X-ray, computerized tomography scan and magnetic resonance imaging are useful in the correct diagnosis of a disease or deformity in the organ. Two-dimensional imaging techniques such as X-ray give a clear picture of simple bone deformity but fail in visualizing multiple fractures in a bone. Moreover, these lack in providing a multi-angle view of a bone. Three-dimensional techniques such as computerized tomography scan and magnetic resonance imaging present a correct orientation of fracture geometry. Computerized tomography scan is a collection of multiple slices of an image. These slices provide a fair idea about a fracture but fail in the measurement of correct dimensions of a fractured fragment and to observe its geometry. It also exposes a patient with carcinogenic radiations. Magnetic resonance imaging induces a strong magnetic field. So, it becomes ineffective for organs containing metallic implants. The high cost of three-dimensional imaging techniques makes them inaccessible for economic weaker section of society. The limitations of two- and three-dimensional imaging techniques motivate researchers to propose an innovative machine learning model ‘CT slices to $3$-D convertor’ that accepts multiple slices of an image and yields a multi-dimensional view at all possible angles from 0 degree to 360 degree for an input image.

scholarly journals Retroperitoneal bronchogenic cyst resembling an adrenal tumor: two case reports and literature review

2020 ◽  
Vol 48 (5) ◽  
pp. 030006052092567
Author(s):  
Yang Wen ◽  
Wanyuan Chen ◽  
Junfa Chen ◽  
Xiaodong He
Keyword(s):  
Bronchogenic Cyst ◽  
Clinical Symptoms ◽  
Imaging Techniques ◽  
Case Reports ◽  
Imaging Features ◽  
Computed Tomography Imaging ◽  
Accurate Preoperative Diagnosis ◽  
Retroperitoneal Bronchogenic Cyst ◽  
Routine Physical Examination ◽  
Bronchogenic Cysts

Bronchogenic cysts are primitive, foregut-derived developmental anomalies with bronchial-type, pseudostratified cylindrical epithelium. They are usually discovered in the thorax. The occurrence of such cysts in the retroperitoneum is extremely rare. Imaging techniques are generally effective in the detection of retroperitoneal bronchogenic cyst. Here, we report two cases (a 27-year-old man and a 33-year-old man) who had no clinical symptoms and were found by chance to have masses in the adrenal gland area during routine physical examination. We found that they had some similar computed tomography imaging features, including complete adrenal structure, cystic fusiform mass in adrenal region, and inclusion of calcifications in the lesions. However, accurate preoperative diagnosis remains difficult and only histology can provide a definitive diagnosis. Surgery remains the treatment of choice.

scholarly journals A retroperitoneal bronchogenic cyst clinically mimicking an adrenal mass: three case reports and a literature review

2022 ◽  
Vol 50 (1) ◽  
pp. 030006052110726
Author(s):  
Bi-yue Hu ◽  
Hong Yu ◽  
Jiang Shen
Keyword(s):  
Adrenal Mass ◽  
Clinical Symptoms ◽  
Imaging Techniques ◽  
Case Reports ◽  
Hormone Secretion ◽  
Symptomatic Patient ◽  
Posterior Mediastinum ◽  
Imaging Features ◽  
Retroperitoneal Bronchogenic Cyst ◽  
Bronchogenic Cysts

Bronchogenic cysts are a congenital primitive foregut-derived developmental malformation, generally occurring in the posterior mediastinum. Their development in the retroperitoneum is extremely rare. Imaging techniques, such as multidetector computed tomography (MDCT), are typically effective in the detection of these lesions. Here, we describe three cases of a retroperitoneal cyst presenting as a para-adrenal mass. Only one boy presented with abdominal pain, and the other two showed no clinical symptoms. Endocrinological evaluation of all three cases was performed, and no adrenal hormone secretion was detected. All three cases were misdiagnosed preoperatively. Each patient underwent surgery, and one symptomatic patient became asymptomatic after surgery. Pathologic examination confirmed all three masses as bronchogenic cysts. The three cases showed some similar MDCT imaging features, including a complete adrenal structure, a cystic or solid mass in the adrenal region, and no obvious enhancement. Therefore, bronchogenic cysts should be considered in the differential diagnosis of retroperitoneal masses, even though accurate preoperative diagnosis remains difficult. A contrast-enhanced MDCT scan may be useful for differentiating hyper-attenuated cysts from other soft tissue masses.

scholarly journals Pulmonary Sequestration Second case series from Iraq

2021 ◽  
Vol 63 (1) ◽  
pp. 40-42
Author(s):  
Waleed M. Hussen
Keyword(s):  
Vascular Surgery ◽  
Thoracic Aorta ◽  
Blood Supply ◽  
Personal Experience ◽  
Case Series ◽  
Pulmonary Sequestration ◽  
Tracheobronchial Tree ◽  
Descending Thoracic Aorta ◽  
Anomalous Artery ◽  
Medical City

Background: Pulmonary sequestration is a lung tissue (out of function), that received its blood supply from anomalous artery and not continuous with the tracheobronchial tree. Aim: To report a personal experience in dealing with five patients with pulmonary sequestration, due to anomalous arterial supply from the descending Thoracic Aorta ,ways of diagnosis and proper surgical management. Patients and Methods: Five patients with pulmonary sequestration, admitted, investigated and surgically managed at the department of Thoracic and Vascular surgery, in the surgical sub specialties hospital of the Medical City Teaching Complex during ten years period (2010-2019). Results : Four of our patients were male, the remaining one was a female, all managed successfully by Operative ligation of the anomalous blood supply and resection of the involved segment or lobe. Conclusion: Resection of the involved segment or lobe after ligation of the anomalous artery offers the best chance of cure.

scholarly journals Incidental Finding and Management of Intralobar Sequestration of the Lung in A 24-Year-Old Man

2013 ◽  
Vol 20 (6) ◽  
pp. 403-405 ◽  
Author(s):  
Dhanjit Litt ◽  
Sumeet Gandhi ◽  
Sacha Bhinder ◽  
Maurice Blitz ◽  
Kieran McIntyre
Keyword(s):  
Present Article ◽  
Blood Supply ◽  
Lung Tissue ◽  
Incidental Finding ◽  
Pulmonary Sequestration ◽  
Tracheobronchial Tree ◽  
Arterial Blood Supply ◽  
Intralobar Sequestration ◽  
Arterial Blood ◽  
Pulmonary Arterial

Pulmonary sequestration is described as a dysplastic mass of lung tissue that lacks communication with the tracheobronchial tree and receives systemic rather than pulmonary arterial blood supply. Two distinct classifications, intralobar and extralobar, have been described. The present article discusses the etiology, clinical and radiographic features of pulmonary sequestration as well as the management of this condition when it is discovered incidentally.

scholarly journals Preoperative Embolization to Improve Surgical Management and Outcome of Pulmonary Sequestration

2018 ◽  
Vol 4 (02) ◽  
pp. 076-080
Author(s):  
Vivek Ukirde ◽  
Saurabh Joshi ◽  
Ashank Bansal ◽  
Arvind Borde ◽  
Amol Lahoti
Keyword(s):  
Case Report ◽  
Surgical Resection ◽  
Surgical Management ◽  
Blood Supply ◽  
Lung Tissue ◽  
Pulmonary Sequestration ◽  
Adult Woman ◽  
Preoperative Embolization ◽  
Systemic Arteries

AbstractPulmonary sequestration is a rare embryonic malformation of lung tissue with no identifiable bronchial communication receiving its blood supply from one or more anomalous systemic arteries or aorta. The authors present a case report of an adult woman who presented with untreatable hemoptysis. She was treated with anti-Koch's therapy for her nonresolving hemoptysis. She underwent preoperative vascular embolization and operative surgical resection.

scholarly journals Processing of projections containing phase contrast in laboratory micro-computerized tomography imaging

2013 ◽  
Vol 46 (4) ◽  
pp. 933-938 ◽  
Author(s):  
Zdenko Zápražný ◽  
Dušan Korytár ◽  
Petr Mikulík ◽  
Vladimír Áč
Keyword(s):  
Computerized Tomography ◽  
Phase Contrast ◽  
Phase Retrieval ◽  
Imaging System ◽  
Imaging Techniques ◽  
Ccd Camera ◽  
Beam Deflection ◽  
X Rays ◽  
Qualitative Comparison ◽  
X Ray

Free-space-propagation-based imaging belongs to several techniques for achieving phase contrast in the hard X-ray range. The basic precondition is to use an X-ray beam with a high degree of coherence. Although the best sources of coherent X-rays are synchrotrons, spatially coherent X-rays emitted from a sufficiently small spot of laboratory microfocus or sub-microfocus sources allow the transfer of some of the modern imaging techniques from synchrotrons to laboratories. Spatially coherent X-rays traverse a sample leading to a phase shift. Beam deflection induced by the local change of refractive index may be expressed as a dark–bright contrast on the edges of the object in an X-ray projection. This phenomenon of edge enhancement leads to an increase in spatial resolution of X-ray projections but may also lead to unpleasant artefacts in computerized tomography unless phase and absorption contributions are separated. The possibilities of processing X-ray images of lightweight objects containing phase contrast using phase-retrieval methods in laboratory conditions are tested and the results obtained are presented. For this purpose, simulated and recorded X-ray projections taken from a laboratory imaging system with a microfocus X-ray source and a high-resolution CCD camera were processed and a qualitative comparison of results was made.

scholarly journals An uncommon cause of massive haemothorax and treatment under cardiopulmonary bypass

2021 ◽  
Author(s):  
Gulen Sezer Alptekin Erkul ◽  
Sinan Erkul ◽  
Ali İhsan Parlar ◽  
Ahmet Çekirdekçi
Keyword(s):  
Cardiopulmonary Bypass ◽  
Blood Supply ◽  
Male Patient ◽  
Lung Tissue ◽  
Pulmonary Sequestration ◽  
Tracheobronchial Tree ◽  
Arterial Blood Supply ◽  
Arterial Blood ◽  
Intralobar Pulmonary Sequestration ◽  
Normal Continuity

Abstract Pulmonary sequestration is defined as nonfunctioning lung tissue that is not in normal continuity with the tracheobronchial tree and that has a systemic arterial blood supply. Herein, we aimed to present a case of a 34-year-old male patient who had massive left-sided haemothorax on admission due to a giant intralobar pulmonary sequestration. An emergent repair was performed under cardiopulmonary bypass with axillofemoral cannulation.

Studies of metaphase chromosomes in the scanning transmission x-ray microscope: Image fidelity, radiation damage and specimen preparation

1992 ◽  
Vol 50 (2) ◽  
pp. 1038-1039
Author(s):  
Shawn Williams ◽  
Xiaodong Zhang ◽  
Susan Lamm ◽  
Jack Van’t Hof
Keyword(s):  
Visible Light ◽  
Radiation Damage ◽  
Cross Section ◽  
Imaging Techniques ◽  
Dose Range ◽  
Specimen Preparation ◽  
X Rays ◽  
Metaphase Chromosomes ◽  
X Ray ◽  
Scanning Transmission

The Scanning Transmission X-ray Microscope (STXM) is well suited for investigating metaphase chromosome structure. The absorption cross-section of soft x-rays having energies between the carbon and oxygen K edges (284 - 531 eV) is 6 - 9.5 times greater for organic specimens than for water, which permits one to examine unstained, wet biological specimens with resolution superior to that attainable using visible light. The attenuation length of the x-rays is suitable for imaging micron thick specimens without sectioning. This large difference in cross-section yields good specimen contrast, so that fewer soft x-rays than electrons are required to image wet biological specimens at a given resolution. But most imaging techniques delivering better resolution than visible light produce radiation damage. Soft x-rays are known to be very effective in damaging biological specimens. The STXM is constructed to minimize specimen dose, but it is important to measure the actual damage induced as a function of dose in order to determine the dose range within which radiation damage does not compromise image quality.

Sign in / Sign up

Export Citation Format

Share Document