Organizing Pneumonia with NGS False-Positive Imaging Resembling Tuberculosis: a Case Report.

BACKGROUND: Organizing pneumonia (OP) is a pathologic concept characterized by the formation of granulation tissue from fibroblasts, myofibroblasts, collagen, and fibrotic exudate in the respiratory fine bronchi, alveolar ducts, and alveoli. The clinical imaging of mechanized pneumonia is variable, and histopathological examination is required to clarify the nature of the lesion when imaging is atypical. We report a case of OP with imaging resem-blance to pulmonary tuberculosis and false-positive next-generation sequencing (NGS), which was first misdiag-nosed as pulmonary tuberculosis. METHODS: Appropriate laboratory tests, alveolar lavage fluid NGS, chest CT, bronchoscopy, percutaneous lung puncture, pathology. RESULTS: Chest CT showed a nodular high-density shadow in the lower lobe of the right lung. According to the chest CT, bronchoalveolar lavage was performed in the dorsal segment of the right lower lobe of the lung. NGS of lavage fluid: the sequence number of Moraxella osseae was 1,423; the sequence number of Prevotella melanogaster was 1,129. Based on lung histopathology, fibrous emboli and necrotic material were seen in the alveolar lumen, and the final diagnosis of the OP was confirmed. CONCLUSIONS: It should be noted that physicians should not blindly believe the NGS result report. When the diagnosis is not clear and anti-infection treatment is ineffective, lung tissue should be obtained promptly for pathological examination to obtain pathological evidence to differentiate from misdiagnosed diseases.

Rare Co-Infection of the Lungs with EBV and Pneumocystis Carinii in a Patient with Kidney Cancer: a Case Report.

BACKGROUND: Epstein-Barr virus (EBV) is the primary agent of infectious mononucleosis, lymphoma, and naso-pharyngeal carcinoma, but rarely involves the lungs. Pneumocystis carinii is commonly found in patients with HIV infection and is not pathogenic when the host is healthy, but opportunistic infections can occur when the body is immunocompromised, causing pneumocystis pneumonia (PCP). It is rare for both diseases to occur in the lungs of the same patient. METHODS: Next-generation sequencing (NGS), laboratory examination, chest CT scan, electronic bronchoscopy, and pathogenetic examination were used in this study. RESULTS: Laboratory tests showed (1-3)-ß-D-glucan of 889.47 pg/mL, negative human immunodeficiency virus (HIV) antibody, and negative Aspergillus immunological test. Chest CT showed multiple high-density shadows in both lungs, and EBV infection combined with Pneumocystis carinii pneumonia was confirmed by bronchoscopic biopsy and NGS examination. CONCLUSIONS: Elevated serum (1-3)-ß-D-glucan is not a specific index for infectious diseases. Bronchoscopy and the NGS has high specificity in pathogen detection of infectious diseases.

D-Dimer and Procalcitonin Improve the Sensitivity of BAP-65 Score in Predicting AECOPD Patients Admission to ICU.

BACKGROUND: The study aimed at investigating the effectiveness of the BAP-65 score combined with D-dimer and procalcitonin (PCT) in predicting admission of acute exacerbation chronic obstructive pulmonary disease (AECOPD) patients to the intensive care unit (ICU). METHODS: We conducted a retrospective study. We analyzed data from 369 patients over the age of 40 years ad-mitted to our hospital with AECOPD. All patients received blood routine measurements and BAP-65 score calculation on admission. Receiver operating characteristic curves (ROC) were used to assess the sensitivity and specificity of D-dimer, PCT, and BAP-65 scores and combined metrics in predicting the risk of admissions to the ICU of AECOPD patients. RESULTS: We found that the percentage of patients with AECOPD admitted to the ICU was 32.25% (119/369). The area under the curve (AUC) of D-dimer, PCT, and BAP-65 score in individually predicting the probability of entering the ICU of AECOPD patients were 0.74 (95% CI 0.68 - 0.80), 0.83 (95% CI 0.78 - 0.88), and 0.72 (95% CI 0.66 - 0.79), respectively. The sensitivities of D-dimer, PCT, and BAP-65 score were 0.51, 0.65, and 0.52, respectively. The specificities of D-dimer, PCT, and BAP-65 score were 0.90, 0.91, and 0.92, respectively. The AUC of D-dimer and PCT combined with BAP-65 score was 0.90 (95% CI 0.86 - 0.94), the sensitivity and specificity were 0.90 and 0.80, respectively. CONCLUSIONS: D-dimer and procalcitonin improve the sensitivity of the BAP-65 score in predicting the probability of AECOPD patients entering the ICU while having a good specificity.

Procalcitonin (PCT) Improves the Accuracy and Sensitivity of CURB-65 Score in Predicting CAP Patients Admission to ICU.

BACKGROUND: The CURB-65 scoring system is a simple tool for assessment and prognosis prediction for community-acquired pneumonia (CAP) patients. However, the variations in the performance of CURB-65 in young and elderly patients, underestimation, or overestimation of the severity have often been reported. It is worth noting that the application of biomarkers is helpful for improving the accuracy of the scoring system. In recent years, more and more reports and studies paid attention to procalcitonin (PCT) in respiratory infectious diseases, and its clinical value has attracted increasing attention. The study aimed at investigating the effectiveness of the CURB-65 score combined with PCT in predicting admission of CAP patients to intensive care units (ICU). METHODS: We conducted a retrospective study. We analyzed data from 520 non-immune individuals over the age of 18 in this study. All patients received blood indicators measurement and CURB-65 score calculation on admission. The primary outcome used to assess the probability of a CAP patient was who would get a bed in general ward or ICU. Receiver operating characteristic curves (ROC) were used to evaluate the sensitivity and specificity of the CURB-65 model and PCT combined CURB-65 augmented model in predicting the main outcomes. RESULTS: After analyzing the data from 520 patients, we found that the probability of entering the ICU was 22.1% (115/520). The AUC of Combination 1 (PCT&CURB-65 scores), Combination 2 (WBC&CURB-65 scores), Combination 3 (hs-CRP&CURB-65 scores) and Combination 4 (D-dimer&CURB-65 scores) for predicting CAP patients entering the ICU was 0.92 (95% CI 0.88 - 0.95), 0.91 (95% CI 0.87 - 0.94), 0.89 (95% CI 0.85 - 0.92), and 0.90 (95% CI 0.87 - 0.94), respectively, with statistically significant differences (p = 0.00); the sensitivities were 0.83, 0.82, 0.77 and 0.77, respectively, and the specificities were 0.92, 0.84, 0.90 and 0.91, respectively. PCT was superior to other indexes to improve the sensitivity and specificity of the CURB-65 score. CONCLUSIONS: Procalcitonin improves the accuracy and sensitivity of the CURB-65 score in predicting the probability of CAP patients entering the ICU, and PCT was superior to other indexes to improve the sensitivity and specificity of the CURB-65 score.

A New Prediction Model for Prolonged Hospitalization in Adult Community-Acquired Pneumonia (CAP) Patients.

BACKGROUND: As a serious and common out-of-hospital infectious disease, community-acquired pneumonia (CAP) ranks among the leading causes of death in both developing and developed countries. In recent years, the increasing incidence of CAP has led to an increase in the number of hospitalizations. Although CURB-65 (or CRB-65) and pneumonia severity Index (PSI) scoring systems are widely used in CAP prognostic scoring systems, each score had some limitations in predicting whether patients with CAP would require prolonged hospitalization. The aim of this study was to analyze serum inflammatory biomarkers combined with age to establish a novel predictive model for predicting prolonged hospitalization in patients with CAP. METHODS: In a retrospective study, serum inflammatory biomarkers were collected from all enrolled CAP patients, including white blood cell count (WBC), high-sensitivity C-reactive protein (hs-CRP), erythrocyte sedimentation rate (ESR), D-dimer, procalcitonin (PCT), fibrinogen (FIB), and ICU treatment. Length of hospital stay and age were also recorded. The 75th percentile of length of stay in the enrolled population was defined as long hospitalization over time, and the primary predictor of outcome was prolonged hospitalization. Univariate analysis and binary logistic regression analysis were used to explore the independent risk factors which could be components of a new predicting model for prolonged hospitalization in CAP patients. ROC curves were used to evaluate the sensitivity and specificity of the new model, which consisted of the combination of all independent risk factors in predicting the main outcomes. RESULTS: The results showed that among 364 patients with CAP, 85 had extended hospitalization (85/364). Further analysis showed that age, white blood cell, fibrinogen, and high-sensitivity C-reactive protein were independent risk factors for extended hospitalization in patients with CAP. Finally, the AUC of the ROC curve of the new prediction model (the joint model consists of age, WBC, FIB, and hs-CRP) was 0.93 (95% CI 0.90 - 0.96), and the sensitivity and specificity were 87.1% and 87.8%, respectively. CONCLUSIONS: Serum inflammatory biomarkers combined age have high specificity and sensitivity in predicting prolonged hospitalization in adult CAP patients.

Carcinoembryonic Antigen Elevation in Broncholithiasis Patients Initially Misdiagnosed as Lung Cancer: a Case Report.

BACKGROUND: We report a case of broncholithiasis with recurrent pulmonary infection accompanied by blood in the sputum, which was initially misdiagnosed as lung cancer after laboratory examination indicating elevated carcinoembryonic antigen. METHODS: Laboratory examination, enhanced chest CT scan, electronic bronchoscopy, and ultra-thin bronchoscopy were performed to diagnose broncholithiasis. RESULTS: Carcinoembryonic antigen levels were elevated. Chest CT scan showed dense nodules and calcification in the middle lobe of the right lung. Ultrathin bronchoscopy demonstrates calcification of the distal bronchus of the lateral middle lobe of the right lung. The symptoms were relieved after the removal of the calculi by electronic bronchoscopy. CONCLUSIONS: It is necessary to pay attention to the calcification of the trachea and the differential diagnosis of lung cancer, especially when the level of carcinoembryonic antigen is increased.

Serum Procalcitonin, Smoking History Combined Age Established a New Prediction Model for Predicting Dynamic Changes of Chest CT Images in Adult Community-Acquired Pneumonia (CAP) Patients.

BACKGROUND: Chest CT is widely used in clinical diagnosis and efficacy evaluation of CAP. While repeated chest CT examinations to evaluate dynamic changes in chest CT images in a short period of time is a common phenomenon, it causes a lot of waste of medical resources, and due to the large dose of CT radiation, it can cause some harm to the human body. The purpose of this study is to establish a new model to predict the dynamic chest CT image changes of CAP patients by analyzing the age, smoking history, and serum inflammatory markers. METHODS: This is a retrospective study. All patients had received chest CT scan and serum inflammatory indexes were measured, including procalcitonin (PCT), high-sensitivity C-reactive protein (hs-CRP), white blood cell (WBC) and erythrocyte sedimentation rate (ESR). The second chest CT examination was performed after a week of treatment. General information on the medical record was also recorded (including age, smoking history, drinking history, and others). Main outcome measures were the changes of chest CT images, including absorption and non-absorption (including patients with progressive inflammation). Single factor analysis and two-dimensional logistic regression analysis were used to explore the independent risk factors of the new CT image change prediction model for CAP patients. ROC was used to evaluate the sensitivity and specificity of the new model. RESULTS: Among 220 patients with CAP, 150 patients had absorption in chest CT after a week of treatment (150/220), the remaining 70 patients had no absorption or even progression (70/220). Age, PCT, and smoking history were independent risk factors for inflammatory absorption. The AUC of ROC curve was 0.89 (95% CI 0.83 - 0.94), the sensitivity was 88.70%, and the specificity was 80.00%. CONCLUSIONS: A new prediction model consists of serum PCT, age, and smoking history has high specificity and sensitivity in predicting dynamic CT changes in adult CAP patients.

Serum Prealbumin Improves the Sensitivity of Pneumonia Severity Index in Predicting 30-day Mortality of CAP Patients.

BACKGROUND: Serum prealbumin (PAB) is an effective tool to evaluate patients with malnutrition. In recent years, studies have shown that PAB is statistically reduced during the course of disease infection. The pneumonia severity index (PSI) scoring system is one of the most widely used scoring tools to evaluate the condition and prognosis of community acquired pneumonia (CAP) patients. However, few studies have reported on PSI combined with blood indicators to predict the prognosis of pneumonia. The aim of this study was to investigate the prognostic value of PAB combined with PSI in patients with CAP. METHODS: We retrospectively analyzed the data of 400 patients who met the inclusion criteria. Death and survival were selected as prognostic indicators of pneumonia. On the first day after admission, venous blood samples were taken to test PAB and PSI scores. Subject operating characteristic curve (ROC) was used to evaluate PSI, PAB, and PSI combined with PAB to predict 30-day mortality of CAP patients. RESULTS: The 30-day mortality rate of CAP patients was 10.5% (42/400). PAB and PSI score were independent risk factors for 30-day mortality in CAP patients. The sensitivity, specificity, positive predictive value, and negative predictive value of PAB predicting the death of CAP patients were 86.3%, 79%, 50.74%, and 95.83%, respectively. The sensitivity, specificity, positive predictive value, and negative predictive value of PSI predicting the death of CAP patients were 74.80%, 63%, 33.71%, and 90.99%, respectively. The sensitivity, specificity, positive predictive value, and negative predictive value of the combined index predicting the death of CAP patients were 95.20%, 77.80%, 51.70% and 98.41%, respectively. CONCLUSIONS: Serum prealbumin is a relatively simple acquired index and an independent risk factor for death in CAP patients. Serum prealbumin improves the sensitivity of pneumonia severity index in predicting 30-day mortality of CAP patients.

Serum Procalcitonin, White Blood Cell and Hypersensitive C-reactive Protein Combined with Age Established a New Prediction Model in Predicting ICU Admission in Adult Community-Acquired Pneumonia (CAP) Patients.

BACKGROUND: CAP is the most common cause of death in infectious diseases in developing countries, while also an important cause of death and morbidity in developed countries. In recent years, CURB-65 (or CRB-65) and pneumonia severity index (PSI) scoring systems have been widely used in the prognosis scoring system of CAP. However, each of them has some shortcomings in predicting ICU admission in CAP patients. The aim of this study is to analyze serum inflammatory biomarkers combined age to established a new prediction model in predicting ICU admission in CAP patients. METHODS: This is a retrospective study. The enrolled CAP patients received serum inflammatory biomarker tests, including procalcitonin (PCT), white blood cell count (WBC), hypersensitive C-reactive protein (hs-CRP), and erythrocyte sedimentation rate (ESR). Body temperature and age were also recorded. The main outcome measures were ICU admission. Univariate analysis and binary logistic regression analysis were used to explore the in-dependent risk factors which could be components of a new predicting model for ICU admission in CAP patients. Receiver operating characteristic curves (ROC) were used to evaluate the sensitivity and specificity of the new model, which consisted of the combination of all independent risk factors in predicting the main outcomes. RESULTS: Initially, 246 CAP patients were admitted to general wards, 61 of whom were subsequently transferred to ICU (61/246). Age, PCT, WBC, and hs-CRP were independent risk factors for subsequent admission to ICU for CAP patients in general wards. The AUC of the ROC curve of new prediction model (the joint model consists of age, PCT, WBC, and hs-CRP) was 0.93 (95% CI 0.85 - 0.96), the sensitivity and specificity were 85.2% and 88.1%, respectively. CONCLUSIONS: Serum inflammatory biomarkers combined age have high specificity and sensitivity in predicting ICU admission in adult CAP patients.

Elevated Leukocytes Combined with Left Lung Consolidation on Chest Computed Tomography (CT) Scan in an Adult Patient Firstly Misdiagnosed as Pneumonia and Finally Diagnosed as Pulmonary Sequestration by Enhanced CT Scan and CT Angiography: a Case Report and Literature Review.

BACKGROUND: Pulmonary sequestration is an uncommon pulmonary disorder. We presented an adult case with recurrent pulmonary infection firstly misdiagnosed as pneumonia, which proved as pulmonary sequestration by enhanced CT scan and CT angiography. METHODS: Appropriate laboratory tests, chest CT scan, bronchoscopy, and CT angiography were performed for diagnosis. RESULTS: The white blood cells detected by routine blood test were 11.8 x 109/L, the plain chest CT scan showed the volume of the lower lobe of the left lung decreased and the density increased. Enhanced CT and maximum intensity projection (MIP) algorithms were used for three-dimensional (3D) reconstruction of the images: no abnormally enhanced shadows were seen in the reduced lower lobe of the left lung, and tortuous vascular shadows were seen in the mediastinum. Bronchoscopy showed a narrowing of the opening in the dorsal segment of the lower lobe of the left lung. Thoracic aortography revealed an abnormal arterial supply to the lower left lung, the pathological results of thoracoscopic resection of the lower left lung were pulmonary sequestration. CONCLUSIONS: Pulmonary consolidation may be more than a simple pulmonary infection. Physicians should consider the possibility of pulmonary sequestration in patients with recurrent or refractory pneumonia. Enhanced CT findings of abnormal blood vessel supply are helpful for pulmonary sequestration diagnosis, and CT angiography is the gold standard for diagnosis.

Procalcitonin (PCT) Improves the Accuracy and Sensitivity of Dyspnea, Eosinopenia, Consolidation, Acidemia and Atrial Fibrillation (DECAF) Score in Predicting AECOPD Patients Admission to ICU.

BACKGROUND: The score of Dyspnea, Eosinopenia, Consolidation, Acidemia and Atrial Fibrillation (DECAF) can be used to predict the in-hospital mortality of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). It is worth noting that the DECAF score is the first scoring standard combining biomarkers and clinical variables. The application of biomarkers is helpful for improving the accuracy of the scoring system. In recent years, more and more reports and studies paid attentions to procalcitonin (PCT) in respiratory infectious diseases and its clinical value has attracted increasing attention. The study aimed at investigating the effectiveness of the DECAF score combined with PCT in predicting admission of AECOPD patients to intensive care unit (ICU). METHODS: We conducted a retrospective study. We analyzed data from 171 non-immune individuals over the age of 40 in this study. All patients received blood routine measurement and DECAF score calculation on admission. The primary outcome used to assess the probability of an AECOPD patient was who would get a bed in general ward or ICU. Receiver operating characteristic curves (ROC) are used to assess the sensitivity and specificity of PCT, WBC, creatinine, and DECAF scores in predicting the risk of admissions to the ICU of COPD patients. We combined PCT, WBC, and creatinine with DECAF scores, observing the sensitivity and specificity of the different combinations in predicting COPD patients with regard to who should be admitted to ICU. RESULTS: After analyzing the data from 171 patients, we found that the probability of entering the ICU was 21.05% (36/171). The area under curve (AUC) of PCT, WBC, creatinine, and DECAF score in individually predicting the probability of entering the ICU of AECOPD patients were 0.71 (95% CI 0.61 - 0.81), 0.64 (95% CI 0.52 - 0.75), 0.74 (95% CI 0.63 - 0.84), and 0.88 (95% CI 0.81 - 0.94), respectively, with statistically significant differences (p = 0.00). The sensitivities of PCT, WBC, creatinine and DECAF scores were 0.61, 0.61, 0.56, and 0.91, respectively. The specificities of PCT, WBC, creatinine, and DECAF scores were 0.76, 0.67, 0.88 and 0.74, respectively. The AUC of Combination 1 (PCT&DECAF scores), Combination 2 (WBC&DECAF scores), and Combination 3 (creatinine&DECAF scores) for predicting AECOPD patients entering the ICU was 0.92 (95% CI 0.86 - 0.97), 0.89 (95% CI 0.84 - 0.94), and 0.91 (95% CI 0.85 - 0.96), respectively, with statistically significant differences (p = 0.00); the sensitivities were 0.92, 0.86, and 0.94, respectively, and the specificities were 0.97, 0.78, and 0.74, respectively. CONCLUSIONS: Procalcitonin improves the accuracy and sensitivity of the DECAF score in predicting the probability of AECOPD patients entering the ICU, and PCT was superior to other indexes to improve the sensitivity and specificity of the DECAF score.

Neutrophil-to-Lymphocyte Ratio Improves the Accuracy and Sensitivity of Pneumonia Severity Index in Predicting 30-Day Mortality of CAP Patients.

BACKGROUND: The pneumonia severity index (PSI) scoring system is one of the tools used to evaluate and predict the prognosis of patients with community-acquired pneumonia (CAP). Although PSI has been widely used in clinical studies of pneumonia, it is still rare to combine it with blood indexes to predict the prognosis of pneumonia. Neutrophil-to-lymphocyte ratio (NLR) is a promising candidate predictor of mortality in CAP patients. The aim of this study was to investigate the efficacy of pneumonia severity index combined with NLR in predicting 30-day mortality in CAP patients. METHODS: We conducted a retrospective study. We analyzed data on 400 non-immune individuals over the age of 18 in this study. All patients received blood routine measurement and PSI score calculation after admission. The primary outcome measures were mortality and survival in CAP patients. The sensitivity and specificity of PSI score, NLR, and the combination of PSI score and NLR in predicting 30-day mortality were assessed using the subject operating characteristic curve (ROC). RESULTS: Data from 400 patients were analyzed, in which the 30-day mortality was 10.5% (42/400). The AUC of NLR and PSI in predicting 30-day mortality of CAP patients were 0.81 (95% CI 0.73 - 0.89) and 0.94 (95% CI 0.90 - 0.98), respectively, with statistically significant differences (p = 0.00). The sensitivity and specificity of NLR were 0.80 and 0.7, respectively. The sensitivity and specificity of PSI were 0.78 and 0.94, respectively. The combined AUC of the two indicators for predicting death in CAP patients was 0.95 (95% CI 0.92 - 0.99), and the sensitivity and specificity were 0.85 and 0.94, respectively. CONCLUSIONS: Neutrophil-to-lymphocyte ratio improves the accuracy and sensitivity of the pneumonia severity index in predicting 30-day mortality of CAP patients.

Neutrophil-to-Lymphocyte Ratio in Adult Community-Acquired Pneumonia Patients Correlates with Unfavorable Clinical Outcomes.

BACKGROUND: Despite the extensive improvement in antibiotic treatment and medical care, severe adult community-acquired pneumonia (CAP) remains as the significant cause of death worldwide. Earlier prognosis assessment and timely treatment in adult CAP patients are useful for prognosis. The neutrophil-to-lymphocyte ratio (NLR) in blood routine has a broad application possibility in assessing inflammatory reaction and prognosis. The aim of this study was to examine the relationship between NLR and inflammatory reaction and to unravel the usefulness of NLR in the assessment of clinical outcomes in adult CAP patients. METHODS: This retrospective study was conducted based on adult patients with a primary diagnosis of CAP. All patients included received a routine blood test and calculated NLR. All of the measurement data were analyzed with paired t-test and the enumeration data were analyzed with χ2 test. Multivariate analysis was performed to investigate the association between predictors (age, male, CURB-65 scores, comorbidity, NLR, and other inflammatory cells in blood routine) and unfavorable outcomes of CAP (ICU admission and 30-day mortality). Receiver operating characteristic curves (ROC) were used to evaluate the sensitivity and specificity of NLR in predicting unfavorable outcomes of CAP. RESULTS: One hundred fifty patients were included. Compared with favorable outcomes group, age, CURB-65 scores, WBC, neutrophil and lymphocyte counts, and NLR were elevated in unfavorable outcomes group (p < 0.05), gender and coexisting illness did not differ obviously. Multivariate logistic regression model analysis showed CURB-65 scores and NLR were independent predictors correlated with unfavorable outcomes (p < 0.05). The area under the ROC curve (AUC) of NLR was 0.81 (95% CI 0.73 to 0.89), the sensitivity was 81.00% and specificity was 72.8%. NLR is superior to CURB-65 in predicting unfavorable outcomes. NLR combined CURB-65 has better sensitivity and specificity (89.40% versus 91.30%). CONCLUSIONS: NLR is a simple, cheap, and rapidly available measurement in blood routine and is associated with unfavorable clinical outcomes in adult CAP patients.

Elevated Red Blood Cell Distribution Width Combined White Blood Cell in Peripheral Blood Routine Have a Better Sensitivity than CURB-65 Scores in Predicting ICU Admission and Mortality in Adult Community-Acquired Pneumonia Patients.

Background: Scoring systems including CURB-65 and Pneumonia Severity Index (PSI) and novel or traditional biomarkers including procalcitonin (PCT) and c-reactive protein (CRP) are very significant for understanding the severity and prognosis in community-acquired pneumonia (CAP) patients, while prognostic items are useful for CAP prognostication and point-of-care decisions. The aim of this study was to investigate the usefulness of peripheral blood routine items in predicting ICU admission and 30-day mortality in CAP patients.

Methods: A retrospective study was conducted. All adult patients with a primary diagnosis of CAP were included and peripheral blood routine tests were evaluated. Univariate analysis and multivariate logistic regression analysis were used to explore association of risk factors with 30-day mortality among CAP patients. Receiver operating characteristic curves (ROC) were used to evaluate the sensitivity and specificity of peripheral blood routine items and compared with CURB-65 scores in predicting ICU admission and/or 30-day mortality.

Results: One hundred fifty patients were included and compared with non-ICU admission patients. There was a statistically significant difference in age, co-existing illness, RDW, WBC, and CURB-65 scores ranking in ICU admission patients (p < 0.05). In multivariate logistic regression analysis, we found RDW, WBC, and CURB-65 ≥ 3 scores increased the risk of 30-day mortality by 4.01, 1.65, and 3.43 times, respectively. The area under the curve (AUC) of ROC curves of RDW combined with WBC and CURB-65 was 0.786 (95% CI 0.701 to 0.876) and 0.836 (95% CI 0.764 to 0.908), respectively and the sensitivity was 84.0% and 60.0%, respectively, and the specificity 66.7% and 93.7%, respectively.

Conclusions: Elevated RDW and WBC increased mortality in adult CAP patients, RDW combined with WBC had a better sensitivity than CURB-65 scores in predicting ICU admission and/or mortality in CAP patients.

Anemia Combined Significantly Increased High-Sensitivity C Reactive Protein and Lung Lesions Lead to the Diagnosis of Granulomatosis with Polyangiitis Proven by Lung Biopsy and Anti-neutrophil Cytoplasmic Antibody Test.

Background: To report an atypical case misdiagnosed as lung abscess over the past 2 months, but persistent anemia combined with significantly increased hs-CRP and lung lesions indicated systemic lesion, which led to the diagnosis of granulomatosis with polyangiitis proven by lung biopsy and anti-neutrophil cytoplasmic antibody test (ANCA).

Methods: The complete blood count, hs-CRP, and anti-neutrophil cytoplasmic antibody (ANCA) test were performed. The pathology consultation for the lung biopsy was arranged.

Results: Hemoglobin was 8.5 g/L, hs-CRP was > 200 mg/L, c-ANCA directed against anti-proteinase 3 (PR3) was positive, pathology consultation reported granulomatous inflammation.

 

 

 

 

Conclusions: When patients have multiple organ dysfunction combined with anemia and significantly increased hs-CRP, physicians should pay attention to systemic vasculitis.