scholarly journals Early Warning Information for Severe and Critical Patients With COVID-19 Based on Quantitative CT Analysis of Lung Segments

2021 ◽  
Vol 9 ◽  
Author(s):  
Xu Yuyun ◽  
Yu Lexi ◽  
Wang Haochu ◽  
Shu Zhenyu ◽  
Gong Xiangyang
Keyword(s):  
Early Warning ◽  
Middle Lobe ◽  
Chest Ct ◽  
Critical Group ◽  
Lung Involvement ◽  
Superior Lobe ◽  
Lung Segment ◽  
Right Middle Lobe ◽  
Critical Patients ◽  
The Right

Background: The coronavirus disease 2019 (COVID-19) outbreak is spreading rapidly around the world.Purpose: We aimed to explore early warning information for patients with severe/critical COVID-19 based on quantitative analysis of chest CT images at the lung segment level.Materials and Methods: A dataset of 81 patients with coronavirus disease 2019 (COVID-19) treated at Wuhan Wuchang hospital in Wuhan city from 21 January 2020 to 14 February 2020 was retrospectively analyzed, including ordinary and severe/critical cases. The time course of all subjects was divided into four stages. The differences in each lobe and lung segment between the two groups at each stage were quantitatively analyzed using the percentage of lung involvement (PLI) in order to investigate the most important segment of lung involvement in the severe/critical group and its corresponding time point.Results: Lung involvement in the ordinary and severe/critical groups reached a peak on the 18th and 14th day, respectively. In the first stage, PLIs in the right middle lobe and the left superior lobe between the two groups were significantly different. In the second stage and the fourth stage, there were statistically significant differences between the two groups in the whole lung, right superior lobe, right inferior lobe and left superior lobe. The rapid progress of the lateral segment of the right middle lobe on the second day and the anterior segment of the right upper lobe on the 13th day may be a warning sign for severe/critical patients. Age was the most important demographic characteristic of the severe/critical group.Conclusion: Quantitative assessment based on the lung segments of chest CT images provides early warning information for potentially severe/critical patients.

scholarly journals Automated Lobe-Based Airway Labeling

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Suicheng Gu ◽  
Zhimin Wang ◽  
Jill M. Siegfried ◽  
David Wilson ◽  
William L. Bigbee ◽  
...  
Keyword(s):  
Functional Unit ◽  
Lower Lobe ◽  
Middle Lobe ◽  
Chest Ct ◽  
Rule Based ◽  
Centerline Extraction ◽  
Airway Segmentation ◽  
Right Middle Lobe ◽  
Airway Tree ◽  
The Right

Regional quantitative analysis of airway morphological abnormalities is of great interest in lung disease investigation. Considering that pulmonary lobes are relatively independent functional unit, we develop and test a novel and efficient computerized scheme in this study to automatically and robustly classify the airways into different categories in terms of pulmonary lobe. Given an airway tree, which could be obtained using any available airway segmentation scheme, the developed approach consists of four basic steps: (1) airway skeletonization or centerline extraction, (2) individual airway branch identification, (3) initial rule-based airway classification/labeling, and (4) self-correction of labeling errors. In order to assess the performance of this approach, we applied it to a dataset consisting of 300 chest CT examinations in a batch manner and asked an image analyst to subjectively examine the labeled results. Our preliminary experiment showed that the labeling accuracy for the right upper lobe, the right middle lobe, the right lower lobe, the left upper lobe, and the left lower lobe is 100%, 99.3%, 99.3%, 100%, and 100%, respectively. Among these, only two cases are incorrectly labeled due to the failures in airway detection. It takes around 2 minutes to label an airway tree using this algorithm.

scholarly journals Alveolar adenoma: A rare lung tumor

2007 ◽  
Vol 135 (7-8) ◽  
pp. 461-464 ◽  
Author(s):  
Jelena Stojsic ◽  
Branislava Milenkovic ◽  
Jelena Radojicic ◽  
Malina Percinkovski
Keyword(s):  
Pulmonary Nodule ◽  
Solitary Pulmonary Nodule ◽  
Lung Tumor ◽  
Fibrous Tissue ◽  
Surgical Excision ◽  
Middle Lobe ◽  
Benign Lung Tumor ◽  
Right Middle Lobe ◽  
Malignant Alteration ◽  
The Right

Introduction Alveolar adenoma belongs to the group of benign epithelial tumors. Histogenesis of alveolar adenoma is a combination of proliferation of alveolar pneumocytes and fibrous tissue originating from septal mesenchyma. Case outline A sixty-nine-year old female patient was hospitalized for clinical examination and surgery of well defined and homogenous timorous lesion in the right middle lobe causing pleural pain. Bronchoscopic examination with biopsy did not resolve etiology of the disease. Tumorectomy was performed. Timorous nodule had a multicystic appearance and histologically, histochemically and immunohistochemically, an alveolar adenoma was estimated. Five years after surgery, the patient feels well, without respiratory symptoms and signs of recurrence or malignant alteration, respectively. Conclusion Alveolar adenoma is a rare benign lung tumor, most frequently presented as a solitary pulmonary nodule. After complete surgery, the tumor neither relapses nor malignantly alters. Surgical excision is curative. It is necessary to take into consideration alveolar adenoma, too, when a solitary pulmonary nodule is diagnosed.

scholarly journals A case of a 22-month-old boy with necrotizing pneumonia presenting with leukaemoid reaction misdiagnosed as leukaemia: A case report and review of the literature

2019 ◽  
Vol 31 (3) ◽  
pp. 223-226 ◽  
Author(s):  
Shakilu Jumanne
Keyword(s):  
Leukocyte Count ◽  
Myeloproliferative Disorders ◽  
Middle Lobe ◽  
Total Leukocyte Count ◽  
Necrotizing Pneumonia ◽  
Diagnosis Of Cancer ◽  
Right Middle Lobe ◽  
Laboratory Investigations ◽  
The Right ◽  
Oncology Unit

BackgroundNecrotizing pneumonia and hyperleukocytosis, to the extent of that seen in leukaemia, is a rarely reported presentation. The commonest trigger of such a presentation is an inflammatory process caused by an overwhelming infection which leads to bone marrow irritation. However, the misdiagnosis of this clinical entity as leukaemia should be avoided at all costs so as to avoid the anxiety associated with a diagnosis of cancer, both to the patients and their families.Case presentationHere, we report the case of a 22-month-old boy who was referred to our Pediatric Oncology Unit (POU). Owing to a high total leukocyte count (TLC) of 98,000 cells/µl, there was a strong suspicion of leukaemia. The boy had been reviewed at another hospital where he presented with fever and cough refractory to the commencement of tuberculosis medications as a result of chest radiography findings. Laboratory investigations performed on admission in the POU were negative for leukaemia and other myeloproliferative disorders. A chest computer tomography (CT) scan was performed to delineate opacification in the right middle lobe. This revealed multiple necrotic and emphysematous foci in line with a diagnosis of necrotizing pneumonia. Subsequently, the patient responded well to a course of piperacillin- tazobactam. The TLC normalized and the cough and fever resolved over a period of 2 weeks. ConclusionHere, we describe a particularly rare case of leukaemoid reaction with a massive leukocyte count. Such patients can be easily misdiagnosed as having leukaemia or other myeloproliferative disorders, especially in settings with limited diagnostic availability. Such misdiagnosis can cause undue stress on the patient and their families. Thus, it is important that patients presenting with these symptoms should undergo a thorough review of history, physical examination and a structured workup.

scholarly journals Lobar torsion after thoracoscopic esophagectomy, and prevention method to detect its incidence during the operation

2016 ◽  
Author(s):  
Yutaka Miyawaki ◽  
Yasuaki Nakajima ◽  
Yutaka Tokairin ◽  
Kenro Kawada ◽  
Taichi Ogo ◽  
...  
Keyword(s):  
Pulmonary Resection ◽  
Middle Lobe ◽  
Thoracoscopic Esophagectomy ◽  
Fatal Complication ◽  
Case Presentation ◽  
Urgent Surgery ◽  
Right Middle Lobe ◽  
Prevention Method ◽  
Pulmonary Torsion ◽  
The Right

Abstract Introduction: Lobar torsion is a rare but fatal complication, with such cases being mostly treated with pulmonary resection. Only a few cases of pulmonary torsion following esophagectomy have thus far been reported, and all cases occurred subsequent to transthoracic esophagectomy. Case presentation: We herein present the case of a patient with the right middle lobe torsion after thoracoscopic esophagectomy in a 64-year-old male.As the patient exhibited a hemodynamically unstable condition immediately after surgery and bronchoscopy and computed tomography revealed right middle lobe torsion, urgent surgery was performed.As torsion of right middle lobe was confirmed during a second operation, repositioning for torsion was performed. Fortunately, right middle lobe was aerated and exhibited a good complexion immediately after repositioning; therefore, pneumonectomy was not performed. Conclusion: Because it is difficult to observe the process of reinflation of a collapsed lung under direct vision in order to prevent lobar torsion when performing thoracoscopic esophagectomy, it is imperative to confirm the patency of the proximal bronchi during the operation using bronchoscopy.

scholarly journals Prolonged RNA shedding of the 2019 novel coronavirus in an asymptomatic patient with a VP shunt

2020 ◽  
Vol 13 (9) ◽  
pp. e237720
Author(s):  
Firas El-Baba ◽  
Danielle Gabe ◽  
Allan Frank
Keyword(s):  
Paranoid Schizophrenia ◽  
Middle Lobe ◽  
Psychiatric Facility ◽  
Vp Shunt ◽  
Viral Shedding ◽  
Chest X Ray ◽  
Right Middle Lobe ◽  
Novel Coronavirus ◽  
The Right ◽  
Inpatient Psychiatric Facility

A 33-year-old man with paranoid schizophrenia and a ventriculoperitoneal (VP) shunt was sent to our institution from an inpatient psychiatric facility due to concerns for the 2019 novel coronavirus (COVID-19). Per the facility, the patient had a fever and non-productive cough. On admission, the patient was afebrile and lacked subjective symptoms. A RNA reverse transcriptase PCR (RNA RT-PCR) test for COVID-19 was positive. A chest X-ray contained a small patchy opacity in the right middle lobe and another in the retrocardiac region concerning for pneumonia. Inflammatory markers were mildly elevated. He remained COVID-19 positive and asymptomatic for 36 days. This case details one asymptomatic carrier’s course with persistently positive COVID-19 nasopharyngeal swabs. It demonstrates that a VP shunt could be a possible predisposition for prolonged viral shedding.

scholarly journals LEAVE NO LOBE UNSCOPED: A CASE OF MYCOBACTERIUM TB OF THE RIGHT MIDDLE LOBE

CHEST Journal ◽  
2019 ◽  
Vol 156 (4) ◽  
pp. A635
Author(s):  
Dawn Maldonado ◽  
Michael Megally ◽  
Terence McGarry
Keyword(s):  
Middle Lobe ◽  
Right Middle Lobe ◽  
The Right

Morphometry of cat pulmonary venous tree

1983 ◽  
Vol 55 (1) ◽  
pp. 236-242 ◽  
Author(s):  
R. T. Yen ◽  
F. Y. Zhuang ◽  
Y. C. Fung ◽  
H. H. Ho ◽  
H. Tremer ◽  
...  
Keyword(s):  
Average Length ◽  
Pulmonary Veins ◽  
Branching Ratio ◽  
Lower Lobe ◽  
Average Diameter ◽  
Middle Lobe ◽  
Vascular Tree ◽  
Right Middle Lobe ◽  
The Right ◽  
Number Of Branches

Morphometric data of the pulmonary veins in the cat right lung are presented. Silicone elastomer casts of the right lungs of five cats were made, measured, counted, and analyzed. The Strahler system is used to describe the branching pattern of the vascular tree. These data are needed for the physicomathematical approach to pulmonary circulation. For all the pulmonary blood vessels lying between the left atrium and the capillary beds, there are a total of 10 orders of vessels in the right upper lobe, 9 orders of vessels in the right middle lobe, and 11 orders of vessels in the right lower lobe. The ratios of the diameters, lengths, and the number of branches in successive orders of vessels are called the diameter, length, and branching ratios, respectively. For the cat pulmonary venous tree, the average branching ratio is 3.521, the average diameter ratio is 1.727, and the average length ratio is 2.402 for vessels of orders 1-3 and 1.532 for vessels of orders 4-10.

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