Chest X-ray Research Articles

Varicella challenges: A case of respiratory tract complications in an elderly patient

Varicella, caused by the varicella-zoster virus (VZV), is rarely reported in the elderly but often complicates with pneumonia. In this case report, we present a case of varicella pneumonia in the elderly. A 60-year-old man presented to the emergency room with vesicles filled with clear fluid that had appeared all over the body for the past four days. The patient also reported fever, headache, pain when swallowing, and itching. Initially, the rash consisted of pink macules that progressed to papules, vesicles, pustules, and crusts. The patient experienced a cough and shortness of breath one day before the hospital visit but did not report any chest or abdominal pain. Notably, the patient’s two grandchildren had a history of chickenpox. The patient had been living with diabetes for five years and was undergoing treatment with insulin injections. The patient was also an active smoker for 40 years. On physical examination, several vesicles with varying degrees of redness were observed, along with yellow-black crusts, pustules, and erosions. Diagnostic tests revealed multinucleated giant cells on a Tzanck smear; pulmonary inflammation with thickening of the right hilum on a chest X-ray; extended-spectrum beta-lactamases Klebsiella pneumoniae in the sputum culture; and elevated hemoglobin A1c, blood sugar level, and liver and kidney function markers on laboratory examination. Based on the clinical findings, the patient was diagnosed with varicella, community-acquired pneumonia, diabetes, acute renal failure, and elevated transaminase enzymes. The patient was treated with acyclovir, paracetamol, salicylate 2% powder, fusidic acid 2% cream, moxifloxacin, N-acetylcysteine, curcuma, and insulin. The patient’s clinical condition improved, the complaint of dyspnea decreased, and the patient was discharged to outpatient care after eight days of hospitalization. This case highlights that while varicella is rare in the elderly, it often presents with severe varicella pneumonia, making early detection and comprehensive management essential to prevent complications and mortality.

Temporomandibular Joint Ankylosis In True Hemifacial Hyperplasia With Infiltrative Lipomatosis - A Case Report

Congenital infiltrative lipomatosis of the face is a benign condition in which mature adipocytes invade adjacent tissues causing diffuse fatty infiltration into the surrounding soft tissue and hyperplasia of the adjacent bone on the affected side. This case report of a 37-year-old female with congenital facial asymmetry and diffuse swelling on the right side of the face suggests true hemifacial hyperplasia, which is supported by both clinical and radiographic data which showed severe involvement of underlying bony structures of the temporomandibular joint, sphenoid, temporal, zygoma, right maxilla, mandible, associated dentition and adjacent soft tissues. It also revealed lipomatous enlargement with right temporomandibular joint ankylosis reported with multiple etiological factors and marked trismus, for which functional rehabilitation was achieved following surgical intervention

Diagnostic Accuracy of Lung Ultrasonography Compared to Chest Radiography, BNP and Physical Examination in Patients with Dyspnea Suggestive of Pulmonary Edema: A Systematic Review and Meta-Analysis

Background: Pulmonary edema (PE) is the result of an abrupt increase in hydrostatic pressure in the pulmonary capillaries that leads to leakage of fluid through microvascular endothelial cells. This leads to a disruption of gas exchange in the lungs. Aims: This meta-analysis aimed to determine the diagnostic accuracy of lung ultrasonography (LUS) in pulmonary edema. Methods: A systematic search was conducted using a strategy based on these search terms (Lung ultrasonography, pulmonary edema, diagnostic accuracy); we searched PubMed, Google Scholar, and the Cochrane Library. Out of 1029, 14 prospective cross-sectional and observational studies with 2239 patients who reported the sensitivity and specificity of lung ultrasonography in diagnosing pulmonary edema were selected. For inclusion and data extraction, an independent review of citations was carried out. The data obtained were analyzed using SPSS, RevMan 5.3, and Stata 14.0 software. A quality assessment was conducted using the QUADAS-2 tool. The reference gold standard was the final clinical diagnosis according to chest radiography, B-type natriuretic peptide, and/or physical examination in dyspneic patients. Results: The overall sensitivity and specificity of lung ultrasonography in the diagnosis of pulmonary edema were 0.86 (95% CI, 0.81-0.90) and 0.91 (95% CI, 0.90-0.93), respectively, with a Younden index of 77.8%. The area under the receiver operating characteristic (ROC) curve was 0.889. Conclusion: The overall diagnostic odds ratio was 68.86. The results of this meta-analysis suggest that lung ultrasonography is an effective non-invasive technique in the diagnosis of acute pulmonary edema with rapid bedside examination and immediate interpretation.

Microbiological Aspects and Clinical Impact of Lower Lung Field Tuberculosis: an Observational Cohort Study in Peru.

Approximately 40% of tuberculosis (TB) cases remain undiagnosed globally. Lower lung field tuberculosis (LLF TB) presents atypically and is often misidentified as other lung diseases, leading to diagnostic delays in resource-limited settings. It may contribute to increased TB transmission and mortality. We aimed to identify microbiological determinants of LLF TB and evaluate treatment responses to optimize care. We conducted an observational cohort study in Lima, Peru, enrolling adults with microbiologically confirmed pulmonary TB (PTB) diagnosed by GeneXpert MTB/RIF assay or sputum culture. Mycobacterium tuberculosis (MTB) lineage was determined using whole-genome sequencing (WGS). Due to the delayed chest radiograph (CXR) changes in LLF TB compared to non-LLF TB, we measured changes in the St. George's Respiratory Questionnaire (SGRQ) score at two-month treatment mark and evaluated World Health Organization (WHO)-specified final treatment outcomes. We used logistic regression to evaluate the associations between LLF TB and microbiological determinants and treatment outcomes. We used linear regression to assess whether the change in SGRQ scores over the first 2 months of treatment varied by LLF TB status. Among 1,316 PTB patients, 84 (6%) had LLF TB. Compared to non-LLF TB patients, LLF TB patients were more likely to be smear-negative (adjusted odds ratio [aOR] [95% CI]=2.04 [1.28-3.23], p=0.002) and to be infected with Lineage 2 (aOR [95% CI]= 1.95 (95% CI: 1.07 to 3.41; p=0.024). People with LLF TB had less improvement in SGRQ scores after two months of treatment (adjusted score difference [95% CI] = -6.29 [-10.99 to -1.59], p = 0.009), while they experienced better final outcomes compared to non-LLF TB patients, though this difference did not reach statistical significance (adjusted odds ratio [aOR] = 0.43 [95% CI: 0.13 to 1.05], p = 0.103). Patients with LLF TB are more likely than those with upper lung lesions to be sputum-negative on conventional tests, to be infected with Lineage 2, and to show less clinical improvement after treatment.

A simple calculation formula for the insertion depth of catheter of the central venous access port in Chinese patients

BackgroundThe catheter tip placed between the T6 and T7 vertebrae is recognized as an optimal position for the totally implantable venous access ports (TIVAPs). This study aimed to propose a simple formula for calculating the optimal insertion depth of the right internal jugular central venous catheter (CVC) of TIVAP in Chinese patients. MethodsThis was a prospective observational study. The medical records of 151 patients with TIVAPs placement were retrospectively analyzed. Patient's height and actual insertion depth of CVC were used to build a simple linear regression model. The Peres’ formula was revised to better calculate the optimal insertion depth of the right internal jugular CVC of TIVAPs, accounting for population-specific anatomical variations observed in Chinese patients. A total of 158 patients scheduled for TIVAPs placement were prospectively recruited. The insertion depth of catheter was preoperatively determined according to the established formula, and postoperative chest X-ray was performed to determine the position of catheter tip. The rate of proper position of catheter (the catheter tip within T6 or T7 vertebrae) was calculated to assess the clinical feasibility and effectiveness of the new formula. ResultsThe proper position rate was 64.24% (97/151) in the retrospective group. According to patients’ height and insertion depth of CVC of these 97 cases with proper position, Peres’ formula was revised to ‘insertion depth = 0.1*height – 4 (cm)’. Based on insertion depth predicted by the new formula, the proper position rate in the prospective group reached 86.08% (136/158). ConclusionThe simple formula for calculating the insertion depth of right internal jugular CVC of TIVAPs is clinically feasible for Chinese patients.

Progression of Chest X-ray Findings of Silicosis Among Fluorspar Miners and Prognostic Factors: Retrospective Cohort Study in Mongolia.

This study aimed to delineate the natural progression of silicosis in fluorspar miners after the termination of dust exposure and identify its prognostic factors. This retrospective cohort study, conducted from 2000 to 2019, included 67 former miners. Radiological images were evaluated by comparing the initial and most recent radiographs using the International Classification of Radiographs of Pneumoconiosis. Cox multivariate proportional hazard models were used to estimate the hazard ratios using follow-up time to analyze the multivariable study of associated prognostic factors. Among the participants, 50 (75%) exhibited progression over 2 to 16 years (median, 5.8 years). The Cox analysis highlighted older age as a likely precursor to the progression of significant opacities. Additionally, higher International Labour Organization category grades at onset were associated with disease progression. Nearly three-quarters of the miners diagnosed with silicosis demonstrated radiological progression even after the termination of dust exposure. Advancement in age and the degree of initial radiological opacity were associated with progression.

Epidemiology of human metapneumovirus among children with severe or very severe pneumonia in high pneumonia burden settings: the PERCH study experience

ObjectivesAfter respiratory syncytial virus (RSV), human metapneumovirus (hMPV) was the second-ranked pathogen attributed to severe pneumonia in the PERCH study. We sought to characterize hMPV-positive cases in high burden settings, which have limited data, by comparing to RSV-positive and other cases. MethodsChildren aged 1-59 months hospitalized with suspected severe pneumonia and age/season-matched community controls in seven African and Asian countries had nasopharyngeal/oropharyngeal swabs tested by multiplex PCR for 32 respiratory pathogens, among other clinical and lab assessments at admission. Odds ratios adjusted for age and site (aOR) were calculated using logistic regression. Etiologic probability was estimated using Bayesian nested partial latent class analysis. Latent class analysis identified syndromic constellations of clinical characteristics. ResultsHMPV was detected more frequently among cases (267/3887, 6.9%) than controls (115/4976, 2.3%), among cases with pneumonia chest X-ray findings (8.5%) than without (5.5%), and among controls with respiratory tract illness (3.8%) than without (1.8%; all p≤0.001). HMPV-positive cases were negatively associated with the detection of other viruses (aOR=0.18), especially RSV (aOR=0.11; all p<0.0001), and positively associated with the detection of bacteria (aORs 1.77, p=0.03). No single clinical syndrome distinguished hMPV-positive from other cases. Among hMPV-positive cases, 65.2% were aged <1 year and 27.5% had pneumonia danger signs; positive predictive value was 74.5%; mortality was 3.9%, similar to RSV-positive (2.4%) and lower than other cases (9.6%). ConclusionsHMPV-associated severe pediatric pneumonia in high burden settings was predominantly in young infants and clinically indistinguishable from RSV. HMPV-positives had low case fatality, similar to that in RSV-positives.

Near real-time severe acute respiratory illness surveillance characterising influenza and COVID-19 epidemiology in hospitalised adults, 2021-22

We report the findings of a novel enhanced syndromic surveillance which characterised influenza- and SARS-CoV-2-associated severe acute respiratory illness (SARI) in the 2021/2022 winter season. Prospective cohort study of adults admitted to the Queen Elizabeth University Hospital, Glasgow, with a severe acute respiratory illness. Patient demographics, clinical history, admission details, and outcome were recorded. Data were available to Public Health Scotland (PHS) and clinicians weekly. Between November 2021 and May 2022, 1,063 hospitalised SARI episodes in 1,037 adult patients were identified. Median age was 72.0 years and 44.5% were male. Most (82.6%) SARI cases had >1 co-morbidity; chronic lung disease (50.0%) and malignancy (22.5%) were the most frequently reported. Overall, 229 (22%) and 33 (3%) SARI episodes were SARS-CoV-2 and influenza A PCR positive, respectively. 74.7%, 6.5% and 43.0% SARI episodes received antibiotics, antivirals, and steroids, respectively (54.5, 11.0 and 51.3% among COVID-19 patients). 1.1% required mechanical ventilation and 7.8% died. Male sex, multimorbidity, frailty, respiratory rate >30, low GCS and chest X-ray consolidation were predictive of in-hospital mortality. Near real-time hospitalised SARI syndromic surveillance characterised the evolving clinical epidemiology of SARS-CoV-2 and influenza, high antimicrobial use, and predictors of inpatient mortality among hospitalised SARI patients.

Narrative review of chest wall ultrasound: a practical approach.

Traditionally, literature on thoracic ultrasound has focused on the study of pleural and pulmonary pathology. However, given the superficial location of thoracic wall structures, ultrasound proves to be an excellent technique for their examination. This study aims to evaluate the clinical utility of thoracic ultrasound in diagnosing various thoracic wall pathologies and to illustrate the primary diagnoses that can be achieved. We performed a literature search in January 2024 in PubMed and Google Scholar for articles on thoracic ultrasound. Relevant articles were selected and synthesized in a narrative form. Thoracic ultrasound has emerged as a powerful diagnostic tool, especially when combined with a thorough clinical history. It allows for rapid, inexpensive, and safe resolution of a wide range of common clinical uncertainties across all levels of healthcare. In emergency contexts, it excels in the detection of rib fractures, demonstrating superior capability compared to traditional chest X-rays and similar efficacy to computed tomography (CT) scans. Additionally, thoracic ultrasound is highly effective in evaluating tumors, often providing accurate diagnoses without the need for further studies. It also aids in differentiating pathologies that may require more advanced imaging such as CT or magnetic resonance imaging (MRI). Moreover, thoracic ultrasound plays a valuable role in the initial assessment of infectious and degenerative conditions. Thoracic ultrasound is a versatile and efficient diagnostic tool for examining thoracic wall structures. Its applications are particularly valuable in trauma assessment, tumor evaluation, and the differentiation of various pathologies. The rapid, cost-effective, and safe nature of this technique highlights its potential as a primary diagnostic tool in a wide variety of clinical settings.

A Case Report of an Endobronchial Tuberculosis-Challenges in Diagnosis and the Role of High-resolution CT Scans and Bronchoscopic Biopsy

Introduction: Endobronchial tuberculosis is a challenging disease to diagnose, characterized by infection of the tracheobronchial tree caused by Mycobacterium Tuberculosis. The clinical presentation of endobronchial tuberculosis is nonspecific and variable, making it difficult to identify. Case Report: This report explores the challenges faced during the diagnosis of endobronchial tuberculosis by a 63-year-old female patient presented with a chronic cough lasting over two months. Her chest X-ray revealed an inhomogeneous opacity in the left middle zone, accompanied by an air-bronchogram. Conventional sputum samples and other tests returned negative results. A high-resolution chest CT scan was almost complete consolidation in the lingular subsegment. A comprehensive re-evaluation was recommended in this case due to slow re-solving or non-resolving pneumonia. The histopathological examination of the biopsy sample revealed granulomatous inflammation with necrosis and lymphocytic infiltration, strongly indicating bronchial tuberculosis. The Hain test and MGIT culture confirmed the presence of Mycobacterium tuberculosis. Conclusion: Diagnosing endobronchial tuberculosis can be challenging due to its nonspecific and variable clinical presentation. High-resolution CT scans provide valuable insights, but the absence of typical findings can complicate the diagnosis. Bronchoscopic biopsy proved to be the most reliable method for diagnosing endobronchial tuberculosis in this case. Early and accurate diagnosis is crucial for initiating appropriate treatment and preventing complications.

Clinical characteristics and in-hospital outcomes associated with RSV-ALRI compared to other viral ALRI in hospitalised children under two years old.

Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory infections (ALRIs) associated hospitalisations in children. It is unclear if hospitalized RSV-ALRI differs in clinically from other viral ALRIs. We aimed to compare the disease impact of hospitalised RSV with other viral ALRI in children under 2 years. We conducted a retrospective study using electronic medical records of children under 2 hospitalized with ALRIs at Sydney Children's Hospitals Network from 2020-2022. We compared demographics and clinical features between RSV-positive and RSV-negative (positive for other viruses) cases. Poisson quasi-likelihood regression was used to estimate adjusted prevalence ratios (aPRs) for three in-hospital outcomes: length of stay, need for respiratory support and intensive care. We examined 330 children under 2 years hospitalized with RSV-positive ALRIs and 330 with RSV-negative ALRIs (positive for other viruses). RSV-positive cases were older (12 vs. 8 months, p<0.001) and more often presented with cough (99% vs. 92%), fever (80% vs. 58%), crackles (89% vs. 76%), hypoxia (50% vs. 36%), and lethargy (36% vs. 20%). They were also more likely to undergo chest x-rays (74% vs. 49%) and receive antibiotics (65% vs. 35%). Adjusted analysis showed RSV-positive children had a higher likelihood of LOS > 2 days (aPR 1.95, 95% CI 1.14-3.36).). However, there were no differences in the need for intensive care or respiratory support. Children with RSV-ALRI exhibited more severe symptoms, received more antibiotics, and had longer hospital stays compared to those with other viral ALRIs, underscoring the need for effective prevention and treatment strategies for RSV.

Optimized CNN-Based Approach for Tuberculosis Detection from Chest X-rays Under Limited Data Constraints

Optimized CNN-Based Approach for Tuberculosis Detection from Chest X-rays Under Limited Data Constraints

027. Successful Management of Penetrating Thoracic Injury With Impaled Object: A Case Report

Background: Penetrating thoracic injuries with impaled objects are rare but potentially life-threatening emergencies that require immediate medical intervention. These injuries pose significant challenges due to the risk of pneumothorax, hemothorax, and lung laceration. Prompt diagnosis and surgical management are essential to prevent severe complications. Case: A 28-year-old male was admitted to Adam Malik Hospital with a chief complaint of shortness of breath following an accident where a foreign object impaled his right chest. The injury occurred while he was repairing his motorcycle, and an explosion caused the object to penetrate his chest. The patient reported continuous right chest pain, worsened by breathing. On examination, he was alert with stable hemodynamics (BP: 130/70 mmHg, HR: 98 bpm, SpO2: 99% on 10L NRM), and a penetrating wound of 5x2x3 cm was observed in the right chest. Chest X-ray and clinical assessment confirmed a diagnosis of hemopneumothorax with an impaled object. Emergency thoracotomy revealed 800cc of hemorrhagic fluid, lung laceration, and a foreign body penetrating the right lung's superior and medial segments. The foreign body was removed, the lung was sutured, and a thoracic drain was placed. Conclusion: This case highlights the importance of timely surgical intervention in penetrating thoracic injuries. Hemodynamic stability and appropriate surgical techniques led to a successful outcome in this patient, demonstrating the effectiveness of rapid, multidisciplinary management in emergency thoracotomy.

Diaphragmatic Paralysis Following Chest Tube Insertion in an Infant

Diaphragmatic paralysis (DP) can occur due to central nervous system pathology or peripheral nerve injury. Direct injury to the phrenic nerve after intercostal chest drain (ICD) insertion for treatment of pneumothorax is an infrequent complication. We present a 4-month-old baby, ex-preterm 27 weeks, who was admitted to a tertiary care hospital pediatric intensive care unit in Muscat, Oman, in 2023 with severe respiratory syncytial virus bronchiolitis and required intubation and mechanical ventilation (MV). His illness was complicated by right-side pneumothorax that required ICD insertion. Post-extubation, he had persistent tachypnea with the inability to be weaned from noninvasive ventilation (NIV). Chest x-ray (CXR) and fluoroscopy showed a high right diaphragm dome with paradoxical movements. He improved dramatically after the plication of the right diaphragm and was discharged home on the 9th day after the plication.

Thrombosis in Hemodialysis Tunnelled Central Venous Catheters: From Pathogenesis to Therapeutic Strategies

Central venous catheter-related thrombosis is a frequent non-infectious complication, typically associated with catheter dysfunction and hemodialysis inadequacy. Central venous catheters (CVCs) are categorized into non-tunnelled and tunnelled types, wherein the choice depends on patient's clinical conditions and the diagnostic and therapeutic workup. Tunnelled CVCs (tCVCs) are sought whenever an arteriovenous fistula is unfeasible or as primary access in patients with poor prognosis. Dysfunction is defined as the inability to maintain adequate blood flow within the prescribed dialytic session. Amongst non-infectious complications causing tCVC malfunctioning, thrombosis is the most frequent, and it is further classified into intrinsic (being endoluminal, pericatheter or fibrin sleeve-associated thrombosis) and extrinsic forms (including mural and atrial thrombosis). Diagnosis requires imaging tests like chest X-ray or abdominal X-ray, echocardiography, dynamic catheterography and computed tomography. Pharmacological treatment involves use of local thrombolytic agents. In case of extrinsic thrombosis, systemic anticoagulation is mandatory, occasionally requiring tCVC replacement. Prevention of thrombotic complications includes adequate positioning and appropriate use of the tCVC, with anticoagulant/antimicrobial-based locking solutions playing a crucial role in this context. In cases of extrinsic thrombosis, treatment options vary based on thrombus size, ranging from a conservative approach availing of systemic anticoagulation to surgical interventions like thrombectomy or thrombus aspiration, possibly associated with tCVC removal. In conclusion, late dysfunction of tCVCs is primarily due to thrombosis, thus requiring diagnostic imaging and specific drug therapies. Prevention is crucial to minimize complications.

039. Obstructive Ileus Caused by Colitis Tuberculosa: A Case Report

Background: Gastrointestinal TB (GTB) constituting approximately 1% to 3% of all TB globally and characterized including of any part of digestive system and its related organs. Results: A 61 years old man was admitted to emergency departement with abdominal pain and abdominal distention since 6 months and getting worse in 1 day. He also complained dispneu. On examination, the abdomen was rigid, distended, and tender and the lung has wheezing. The radiographs of abdomen revelved dilated loops of the small intestine with multiple air-fluid levels suggestive of small intestine obstruction. A chest radiograph showed active TB with opacity of the right lung. The patient was planned for exploratory laparotomy and founded anastomosis, peritoneal deposits, matted bowel, and a perforation of ileus. Intraoperative biopsy was taken from the ileus perforation and revelved tuberkulosa infected. Postoperatively, he was started antituberculous theraphy (ATT) of Rifampicin, isoniazid, and ethambutol (RHE). Conclusion: Obstructive Ileus is a complication of gastrointestinal tuberculosis in patients with a history of untreated latent tuberculosis.

Clinical spectrum of pediatric tuberculosis and early diagnosis by clinical, radiological, and CBNAAT in a Tertiary Care Teaching Hospital in South India

Background: In India, an estimated 220,000 children contract tuberculosis (TB) annually, yet the absence of a gold standard test hinders effective diagnosis and reporting of childhood TB. Objective: This study aimed to analyse the clinical profile of childhood tuberculosis, utilizing relevant laboratory investigations for early diagnosis. Methods: A cross-sectional observational study was conducted at a tertiary care hospital in South India from October 2019 to October 2021. Children under 18 with tuberculosis were included. Data on demographics, symptoms, family TB history, nutritional status, and clinical findings were collected. Laboratory tests included complete blood count, ESR, Mantoux test, chest X-rays, and sputum analyses for acid-fast bacilli (AFB). Results: Among 54 children, the most common age group was over 10 years (51.3%), with a male preponderance (53.3%). Pulmonary TB was diagnosed in 44.4% of cases, while 55.5% had extrapulmonary TB, predominantly pleural (40%). Fever (60.5%) and cough (42.7%) were the most common symptoms. The Mantoux test was reactive in 40.7% of patients, particularly among the undernourished. Chest X-rays indicated TB in 93.25% of pulmonary cases, while CBNAAT showed positive results in 10 cases, with a sensitivity of 18.8% and specificity of 81.25%. Conclusions: Diagnosing childhood TB remains complex, relying on symptom evaluation, clinical history, and laboratory tests. Despite advances in diagnostic methods, negative CBNAAT results do not exclude TB, highlighting the need for thorough clinical assessment and investigation.

Comprehensive strategies for preoperative pulmonary risk evaluation and management.

Postoperative pulmonary complications (PPCs) significantly increase morbidity and mortality in surgical patients, particularly those with pulmonary conditions. The incidence of PPCs varies widely, influenced by surgery type, patient age, smoking status, and comorbidities like chronic obstructive pulmonary disease (COPD) and congestive heart failure. Preoperative pulmonary function tests and chest radiographs, while critical for lung resection surgery, should be selectively used based on individual risk factors. Effective risk stratification models, including ASA classification, Arozullah Respiratory Failure Index, Gupta Calculators, and ARISCAT model, aid in predicting PPCs. Key strategies to reduce PPCs involve preoperative optimization of pulmonary conditions, smoking cessation, and respiratory rehabilitation. In COPD and asthma patients, maintaining optimal disease control through inhaled therapies, systemic corticosteroids, and preoperative respiratory exercises is crucial. Anemia and hypoalbuminemia are notable predictors of PPCs, warranting careful management. The type and duration of anesthesia significantly impact PPC risk, with regional anesthesia preferred over general anesthesia when feasible. Comprehensive preoperative evaluation and tailored interventions are essential to improve surgical outcomes and reduce PPC incidence. Further study involving domestic patients is needed to refine national guidelines for managing patients at risk of PPCs.

018. Supraclavicular Flap and Reconstruction With Radial Forearm Flap In Basal Cell Carcinoma Of The Buccal Region: A Rare Case Report

Background: Basal cell carcinoma (BCC) progression can invade surrounding tissues, causing local destruction and disfigurement. About 85-90% cases of BCC occur on the head, greatly affecting facial appearance of patients. Functional or cosmetic concerns require skin flap or graft. Case: A patient presented with a wound on his left cheek for 8 years, bleeds easily and painful. There is a muscle-based ulcer, penetrating the oral cavity and a post-biopsy wound is covered with granulation tissue. Laboratory examination showed moderate anemia and chest x-ray did not show any metastases. A supraclavicular flap and intraoral and supraclavicular insertion and intraoral and supraclavicular insertion were performed. In addition, harvesting of the radial forearm flap and partial palmaris longus tendon was conducted. Conclusion: Reconstruction of facial defects in different facial esthetic units is essential following excision of BCC. But it is necessary to plan the stages of reconstruction when more than one facial region is involved. Surgeon skills, patient’s preference, defect size and location are important determinants of esthetic outcomes

Airway epithelium damage in acute respiratory distress syndrome

BackgroundThe airway epithelium (AE) fulfils multiple functions to maintain pulmonary homeostasis, among which ensuring adequate barrier function, cell differentiation and polarization, and actively transporting immunoglobulin A (IgA), the predominant mucosal immunoglobulin in the airway lumen, via the polymeric immunoglobulin receptor (pIgR). Morphological changes of the airways have been reported in ARDS, while their detailed features, impact for mucosal immunity, and causative mechanisms remain unclear. Therefore, this study aimed to assess epithelial alterations in the distal airways of patients with ARDS.MethodsWe retrospectively analyzed lung tissue samples from ARDS patients and controls to investigate and quantify structural and functional changes in the small airways, using multiplex fluorescence immunostaining and computer-assisted quantification on whole tissue sections. Additionally, we measured markers of mucosal immunity, IgA and pIgR, alongside with other epithelial markers, in the serum and the broncho-alveolar lavage fluid (BALF) prospectively collected from ARDS patients and controls.ResultsCompared to controls, airways of ARDS were characterized by increased epithelial denudation (p = 0.0003) and diffuse epithelial infiltration by neutrophils (p = 0.0005). Quantitative evaluation of multiplex fluorescence immunostaining revealed a loss of ciliated cells (p = 0.0317) a trend towards decreased goblet cells (p = 0.056), and no change regarding cell progenitors (basal and club cells), indicating altered mucociliary differentiation. Increased epithelial permeability was also shown in ARDS with a significant decrease of tight (p < 0.0001) and adherens (p = 0.025) junctional proteins. Additionally, we observed a significant decrease of the expression of pIgR, (p < 0.0001), indicating impaired mucosal IgA immunity. Serum concentrations of secretory component (SC) and S-IgA were increased in ARDS (both p < 0.0001), along other lung-derived proteins (CC16, SP-D, sRAGE). However, their BALF concentrations remained unchanged, suggesting a spillover of airway and alveolar proteins through a damaged AE.ConclusionThe airway epithelium from patients with ARDS exhibits multifaceted alterations leading to altered mucociliary differentiation, compromised defense functions and increased permeability with pneumoproteinemia.