scholarly journals Diagnostic accuracy of Schistoso ma ICT Ig G - IgM and comparison to other used techniques screening urinary schistosomiasis in Nigeria

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Robert Soumay Houmsou ◽  
Binga Emmanuel Wama ◽  
Hemen Agere ◽  
John Ador Uniga ◽  
Timothy Jerry Jerry ◽  
...  
Keyword(s):  
Positive Predictive Value ◽  
Diagnostic Accuracy ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Statistical Significance ◽  
Positive Likelihood Ratio ◽  
Youden Index ◽  
P Value ◽  
Urinary Schistosomiasis

Abstract Objectives Schistosomiasis is a blood fluke parasitic illness affecting human lives in rural endemic areas. This study evaluated the performance of Schistosoma ICT Ig G - IgM for screening urinary schistosomiasis in Nigeria. Methods Three hundred and seventy four (374) urine samples were examined. Reagent strips, urine filtration and Schistosoma ICT Ig G - IgM were used for analysis. Schistosoma ICT Ig G - IgM used 2 mL of each serum for serological examination. Then, 3 mL of each preserved serum was sent to LDBIO Diagnostics, France for re-examination with Schistosoma ICT IgG-IgM and confirmation with SCHISTO Western blot (WB) IgG. The performance of the index tests was determined using sensitivity (Se), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV) and positive likelihood ratio (PLR). The Youden index (YI) and diagnostic accuracy (DA) were used to determine the accuracy of each test. The statistical significance was at p-value ≤0.05. Results The test had a sensitivity of 94.9%, specificity of 63.9%, positive predictive value of 72.4%, negative predictive value of 92.6%, and positive likelihood ratio of 2.62. Schistosoma ICT Ig G - IgM had a good Cohen’s kappa index (κ=0.68), good Youden index (YI=0.58) and good diagnostic accuracy (DA=0.78). Conclusions Schistosoma ICT Ig G - IgM has proven to be the best technique for the screening of urinary schistosomiasis in Nigeria.

scholarly journals Prevalence and identification of anxiety disorders in pregnancy: the diagnostic accuracy of the two-item Generalised Anxiety Disorder scale (GAD-2)

BMJ Open ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. e023766 ◽  
Author(s):  
Selina Nath ◽  
Elizabeth G Ryan ◽  
Kylee Trevillion ◽  
Debra Bick ◽  
Jill Demilew ◽  
...  
Keyword(s):  
Anxiety Disorder ◽  
Positive Predictive Value ◽  
Anxiety Disorders ◽  
Diagnostic Accuracy ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Stratified Sampling ◽  
Generalised Anxiety Disorder ◽  
Population Prevalence

ObjectiveTo estimate the population prevalence of anxiety disorders during pregnancy and investigate the diagnostic accuracy of the two-item Generalised Anxiety Disorder scale (GAD-2) for a) GAD and b) any anxiety disorder.DesignCross-sectional survey using a stratified sampling design. Sampling weights were used in the analysis to adjust for the bias introduced by the stratified sampling.SettingInner-city maternity service, South London.Participants545 pregnant women were interviewed after their first antenatal appointment; 528 provided answers on the GAD-2 questions.Main outcome measuresDiagnosis generated by the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, 4th edition (SCID).ResultsPopulation prevalence of anxiety disorders was 17% (95% CI 12% to 21%): 5% (95% CI 3% to 6%) for GAD, 4% (95% CI 2% to 6%) for social phobia, 8% (95% CI 5% to 11%) for specific phobia and 2% (95% CI 1% to 4%) for obsessive-compulsive disorder. Post-traumatic stress disorder (PTSD) prevalence was unclear due to higher levels of reluctance to respond to PTSD interview questions but sensitivity analyses suggest population prevalence maybe up to 4% (95% CI 2% to 6%). Weighted sensitivity of GAD-2 for GAD (cut-off ≥3) was 69%, specificity 91%, positive predictive value 26%, negative predictive value 98% and likelihood ratio 7.35. For any anxiety disorder the weighted sensitivity was 26%, specificity 91%, positive predictive value 36%, negative predictive value 87% and likelihood ratio 2.92.ConclusionsAnxiety disorders are common but GAD-2 generates many false positives and may therefore be unhelpful in maternity services.

scholarly journals Cut-off Values of Bacteriuria and Leukocyturia for the Diagnosis of Urinary Tract Infections in Pediatric Patients

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Muhamad Ramdani Ibnu Taufik ◽  
Dian Ariningrum ◽  
Yusuf Ari Mashuri
Keyword(s):  
Urinary Tract ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Urinary Tract Infections ◽  
Predictive Value ◽  
Pediatric Patients ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Tract Infections

The diagnosis of Urinary Tract Infection (UTI) in infants and children is often missed. There have been no studies ondiagnostic tests using automated urine analyzer in pediatric patients. This study aimed to determine the cut-off values ofbacteriuria and leukocyturia using the automated urine analyzer Sysmex UX-2000 to diagnose UTI with the gold standard ofautomated urine culture using VITEK 2 in pediatric patients at Dr. Moewardi Hospital, Surakarta. An observational analyticalstudy with the cross-sectional design was during August-October 2019 at the Clinical Pathology Laboratory and ClinicalMicrobiology Laboratory of Moewardi Hospital, Surakarta. Eighty-four patients sample were collected. This study'sdependent variable was the diagnosis of urinary tract infections in pediatric patients established with positive culture results(bacterial count of ≥ 105 CFU/mL urine). This study's independent variables were the number of urine bacteria (BACT) andthe number of urine leukocytes (WBC) from urinalysis using the Sysmex UX-2000 automated urine analyzer. A diagnostictest was used for data analysis. The best cut-off value for leukocyturia was 37 cells/μL with a 61.1% sensitivity, 63.6%specificity, a positive predictive value of 31.4%; a negative predictive value of 85.7; positive likelihood ratio of 1.64; negativelikelihood ratio of 0.595, and accuracy of 63%. The best cut-off for the number of bacteria was 143 cells/μL with a sensitivityof 66.7%; specificity of 71.2%, the positive predictive value of 38.7%, the negative predictive value of 88.7%; positivelikelihood ratio of 2.14; negative likelihood ratio of 0.432 and an accuracy of 70.2%. A cut-off of 37 cells/μL for leukocyturiaand 143 cells/μL for bacteriuria using an automated urine analyzer can be used for UTI screening in pediatric patients.

scholarly journals Clinical chorioamnionitis at term VIII: a rapid MMP-8 test for the identification of intra-amniotic inflammation

2017 ◽  
Vol 45 (5) ◽  
Author(s):  
Noppadol Chaiyasit ◽  
Roberto Romero ◽  
Piya Chaemsaithong ◽  
Nikolina Docheva ◽  
Gaurav Bhatti ◽  
...  
Keyword(s):  
Risk Factor ◽  
Positive Predictive Value ◽  
Amniotic Fluid ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Systemic Inflammation ◽  
Predictive Value ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Enzyme Linked Immunosorbent Assay

AbstractObjective:Clinical chorioamnionitis is the most common infection/inflammatory process diagnosed in labor and delivery units worldwide. The condition is a syndrome that can be caused by (1) intra-amniotic infection, (2) intra-amniotic inflammation without demonstrable microorganisms (i.e. sterile intra-amniotic inflammation), and (3) maternal systemic inflammation that is not associated with intra-amniotic inflammation. The presence of intra-amniotic inflammation is a risk factor for adverse maternal and neonatal outcomes in a broad range of obstetrical syndromes that includes clinical chorioamnionitis at term. Although the diagnosis of intra-amniotic infection has relied on culture results, such information is not immediately available for patient management. Therefore, the diagnosis of intra-amniotic inflammation could be helpful as a proxy for intra-amniotic infection, while results of microbiologic studies are pending. A rapid test is now available for the diagnosis of intra-amniotic inflammation, based on the determination of neutrophil collagenase or matrix metalloproteinase-8 (MMP-8). The objectives of this study were (1) to evaluate the diagnostic indices of a rapid MMP-8 test for the identification of intra-amniotic inflammation/infection in patients with the diagnosis of clinical chorioamnionitis at term, and (2) to compare the diagnostic performance of a rapid MMP-8 test to that of a conventional enzyme-linked immunosorbent assay (ELISA) interleukin (IL)-6 test for patients with clinical chorioamnionitis at term.Materials and methods:A retrospective cohort study was conducted. A transabdominal amniocentesis was performed in patients with clinical chorioamnionitis at term (n=44). Amniotic fluid was analyzed using cultivation techniques (for aerobic and anaerobic bacteria as well as genital Mycoplasmas) and broad-range polymerase chain reaction (PCR) coupled with electrospray ionization mass spectrometry (PCR/ESI-MS). Amniotic fluid IL-6 concentrations were determined by ELISA, and rapid MMP-8 results were determined by Yoon’s MMP-8 CheckResults:(1) A positive rapid MMP-8 test had a sensitivity of 82.4% (28/34), specificity of 90% (9/10), positive predictive value of 96.6% (28/29), negative predictive value of 60% (9/15), positive likelihood ratio 8.2 (95% CI 1.3–53.2), and negative likelihood ratio 0.2 (95% CI 0.1–0.4) for the identification of intra-amniotic inflammation (prevalence 77.3%); (2) a positive rapid MMP-8 test had a sensitivity of 91.7% (22/24), specificity of 65% (13/20), positive predictive value of 75.9% (22/29), negative predictive value of 86.7% (13/15), positive likelihood ratio of 2.6 (95% CI 1.4–4.8), and negative likelihood ratio of 0.1 (95% CI 0.03–0.5) for the identification of intra-amniotic infection; (3) the rapid MMP-8 test had a significantly higher specificity than the ELISA IL-6 test in the identification of intra-amniotic inflammation as determined by an amniotic fluid WBC count ≥50 cells/mmConclusion:The rapid diagnosis of intra-amniotic inflammation is possible by analysis of amniotic fluid using a point-of-care test for MMP-8. Patients with a positive test are at risk of delivering a neonate affected with systemic inflammation, a risk factor for adverse neonatal outcome.

Comparative study of frozen and permanent section for diagnosis of toxic epidermal necrolysis

2020 ◽  
Author(s):  
Luke Burnett ◽  
Chunyang Wang ◽  
Feng Zhang ◽  
Stephan Adams ◽  
Joan Wilson ◽  
...  
Keyword(s):  
Positive Predictive Value ◽  
Diagnostic Accuracy ◽  
Toxic Epidermal Necrolysis ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Frozen Section ◽  
Clinical Findings ◽  
P Value ◽  
Permanent Section ◽  
Significant Difference

Abstract Background Toxic epidermal necrolysis (TEN) is a severe, life-threatening mucocutaneous reaction, causing widespread sloughing of skin and mucosal surfaces. Accurate and prompt diagnosis is essential for optimal management and subsequent outcome. In this study, frozen sections were used as a rapid examination for initial diagnosis of TEN, and the frozen section diagnoses were assessed compared with permanent sections. Methods One hundred patients of suspected TEN were referred to our burn unit, and 67 had sufficient clinical findings for frozen and permanent biopsies. The accuracy of frozen section relative to permanent section was evaluated by calculating diagnostic accuracy, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). And McNemar’s tests were used to analyze the difference between the two methods. Results Fifty-two specimens were classified as TEN by frozen section, 51 of which were confirmed by permanent biopsy. The exception was diagnosed as bullous pemphigoid on permanent section. Fifteen specimens were read as negative for TEN on frozen slides but 4 were changed to positive by permanent biopsy. Overall, the diagnostic accuracy of frozen section was 92.5%, with sensitivity and specificity 92.7% and 91.7% respectively. The positive predictive value, or coherence of positive diagnosis between the two methods, was as high as 98.1%, and the negative predictive value was 73.3%. The p-value of McNemar’s tests was 0.375, indicating there was no significant difference between the two biopsy methods. Conclusion The data suggest that as a rapid histological assessment, frozen section is a reliable tool in the early diagnosis of TEN.

scholarly journals Computed Tomography-Aortography Versus Color-Duplex Ultrasound for Surveillance of Endovascular Abdominal Aortic Aneurysm Repair

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Elixène Jean-Baptiste ◽  
Patrick Feugier ◽  
Coralie Cruzel ◽  
Gabrielle Sarlon-Bartoli ◽  
Thierry Reix ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Positive Predictive Value ◽  
Diagnostic Accuracy ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Endovascular Aneurysm Repair ◽  
Positive Likelihood Ratio ◽  
Morphological Abnormality ◽  
Aneurysm Repair

Background Color-duplex ultrasonography (DUS) could be an alternative to computed tomography-aortography (CTA) in the lifelong surveillance of patients after endovascular aneurysm repair (EVAR), but there is currently no level 1 evidence. The aim of this study was to assess the diagnostic accuracy of DUS as an alternative to CTA for the follow-up of post-EVAR patients. Methods Between December 16, 2010, and June 12, 2015, we conducted a prospective, blinded, diagnostic-accuracy study, in 15 French university hospitals where EVAR was commonly performed. Participants were followed up using both DUS and CTA in a mutually blinded setup until the end of the study or until any major aneurysm-related morphological abnormality requiring reintervention or an amendment to the follow-up policy was revealed by CTA. Database was locked on October 2, 2017. Our main outcome measures were sensitivity, specificity, positive predictive value, negative predictive value, positive and negative likelihood ratios of DUS against reference standard CTA. CIs are binomial 95% CI. Results This study recruited prospectively 659 post-EVAR patients of whom 539 (82%) were eligible for further analysis. Following the baseline inclusion visit, 940 additional follow-up visits were performed in the 539 patients. Major aneurysm-related morphological abnormalities were revealed by CTA in 103 patients (17.2/100 person-years [95% CI, 13.9–20.5]). DUS accurately identified 40 patients where a major aneurysm-related morphological abnormality was present (sensitivity, 39% [95% CI, 29–48]) and 403 of 436 patients with negative CTA (specificity, 92% [95% CI, 90–95]). The negative predictive value and positive predictive value of DUS were 92% (95% CI, 90–95) and 39% (95% CI, 27–50), respectively. The positive likelihood ratio was 4.87 (95% CI, 2.9–9.6). DUS sensitivity reached 73% (95% CI, 51–96) in patients requiring an effective reintervention. Conclusions DUS had an overall low sensitivity in the follow-up of patients after EVAR, but its performance improved meaningfully when the subset of patients requiring effective reinterventions was considered. Registration URL: https://www.clinicaltrials.gov ; Unique identifier: NCT01230203.

scholarly journals Endtidal carbonmonoxide and carboxyhemoglobin for prediction of significant hyperbilirubinemia in healthy Indian neonates >35 weeks of gestation

2020 ◽  
Vol 7 (6) ◽  
pp. 1225
Author(s):  
Gokul Krishnan R. ◽  
Mangalabharathi S. ◽  
Mohammed Sajjid ◽  
Ramya S.
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Neonatal Period ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Likelihood Ratios ◽  
Early Neonatal Period ◽  
Sensitivity Specificity

Background: Endtidalcarbonmonoxide (ETCOc) and Carboxyhemoglobin (COHB) levels correlate well to bilirubin production and an availability of non-invasive point of care (POC) device in predicting significant hyperbilirubinemia is of great advantage when compared to measurement of serum bilirubin. Objective of the study is to measure a value of ETCOc and COHB in the early neonatal period for the prediction of significant hyperbilirubinemia.Methods: This was the descriptive Cross Sectional Study. ETCOc and COHB were measured 12th hourly for 72 hours followed by TSB in whom the TCB was >14mg/dl. Neonates were classified as jaundiced whose TSB values were in phototherapy range as per AAP Recommendations. Receiver Operative Curves (ROC) were created by appropriate statistical software for ETCOc and COHb to predict significant hyperbilirubinemia. The Sensitivity, Specificity, Positive predictive value, Negative predictive value and likelihood ratios of each was determined and the correlation between ETCOc and COHb levels, ETCOc and TCB, COHB and TCB at different hours of age was evaluated.Results: Among the total 320 infants, 156 of them developed significant hyperbilirubinemia. The ETCOc and COHB level at 60 hours of age was the most predictive of significant hyperbilirubinemia by ROC analysis. ETCOc cut-off of 1.65 ppm at 60 hours of age has a sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio of 84.6%, 80.5%, 80.5% and 84.6%, 4.33 and 0.19. COHB cut-off of 1.32 ppm at 60 hours of age has a sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio of 84.6%, 81%, 80% and 84.2%, 4.34 and 0.19.ETCOc had a maximum correlation with COHB at 48 hours of age.Conclusions: An increased level of Endtidalcarbonmonoxide and Carboxyhemoglobin in the early neonatal period is useful as a screening test for prediction of significant hyperbilirubinemia.

An Ultrasound Evaluation of Breast Lumps with Fine Needle Aspiration Cytology Correlation in a Tertiary Medical Centre at South Bihar

2021 ◽  
Vol 8 (03) ◽  
pp. 146-150
Author(s):  
Rishav Prasad ◽  
Guddakesh Kumar ◽  
Prashant Sinha ◽  
Dipu Singh
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Needle Aspiration ◽  
Breast Lump ◽  
Ultrasound Evaluation ◽  
Needle Aspiration Cytology

BACKGROUND In clinical practice, breast lump is a very common presentation of numerous breast diseases which ranges from benign cysts to malignant lesions. The difference between benign and malignant is very important for patient care and proper management. The diagnosis of breast lump includes clinical examination supplemented by imaging. Various literature has concluded that ultrasound evaluation with fine needle aspiration cytology (FNAC) correlation has comparable sensitivity and specificity to histopathology. Our aim was to study the ultrasonographic characteristics of breast lesions in patients and compare the sensitivity of ultrasonography in diagnosing benign and malignant breast lesions with FNAC. METHODS This is a diagnostic validation study, conducted at Department of Radiodiagnosis and Department of Pathology, Narayan Medical College and Hospital. All females more than 30 years coming for routine breast screening, found to have Breast Imaging Reporting and Data System (BI-RADS) 2 and above were subjected to ultrasonography and FNAC under ultrasonography (USG) guidance, and compared with histopathology. Data was collected, entered and analysed using Microsoft Excel, Epi Info, and SPSS software. Sensitivity and specificity with correlation, positive predictive value (PPV), negative predictive value (NPV) was calculated to compare the two diagnostic modalities. RESULTS USG had 83.3 % sensitivity, 97.56 % specificity, 95.24 % positive predictive value, 90.91 % negative predictive value, 33.32 % positive likelihood ratio and 17.13 % negative likelihood ratio. FNAC had 96.67 % sensitivity, 97.56 % specificity, 96.67 % positive predictive value, 97.56 % negative predictive value, 38.66 % positive likelihood ratio and 3.42 % negative likelihood ratio. CONCLUSIONS Breast ultrasound and FNAC both are important diagnostic tools for breast lesion. Sensitivity, specificity and other features are better for FNAC than ultrasound for breast lump. KEYWORDS Breast Lump, FNAC, USG, Adenocarcinoma, Squamous Cell Carcinoma

scholarly journals Diagnostic accuracy of septic markers for neonatal sepsis

2016 ◽  
Vol 48 (5) ◽  
pp. 299
Author(s):  
Thermiany AS ◽  
W Retayasa ◽  
M Kardana ◽  
IN Lila
Keyword(s):  
Blood Culture ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Neonatal Sepsis ◽  
Predictive Value ◽  
Gold Standard ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Suspected Sepsis

Background Neonatal sepsis is a major cause of morbidity andmortality. A positive blood culture is the gold standard fordiagnosis of neonatal sepsis. The signs and symptoms suggestingneonatal sepsis are non-specific. There is no rapid and reliablelaboratory test findings for confirmation of etiologic diagnosis.Clinical signs, symptoms, and laboratory examinations are notperceived as sensitive or specific for diagnosis of sepsis.Objective The purpose of this study was to evaluate the accuracyof the septic markers for diagnosis of neonatal sepsis.Methods Blood culture was used as gold standard to compareseptic markers to diagnose neonatal sepsis. Sensitivity, specificity,positive predictive value (PPV), negative predictive value (NPV),positive and negative likelihood ratio (LR), and accuracy werecalculated.Results We identified 130 cases suspected of neonatal sepsis duringSeptember 2005 until March 2006. Four patients were excludedbecause of major congenital anomalies. The mean age was 2.2 daysand 51.6% were boys. We found fifty six (44.4%) neonates havepositive blood culture. All of septic markers had sensitivity morethan 80%. Immature to Total Neutrophil ratio (Iff) ratio had thehighest sensitivity (96.4%) and C-Reactive Protein (CRP) had thelowest sensitivity (80.4o/o). Combination among leukocyte count,thrombocyte, and Iff ratio had the highest sensitivity (sensitivitywas 85. 7%, specificity was 97.1 o/o, positive predictive value was95.9%, negative predictive value was 89.5%, accuracy was 94.4%,and positive likelihood ratio was 30.0).Conclusion Septic markers can be used in the diagnosticevaluation of neonates with suspected sepsis.

scholarly journals Comparison of Clinical Examination and Various Imaging Modalities in the Diagnosis of Head and Neck Cancer

2020 ◽  
Author(s):  
Uwe Schneider ◽  
Inse Graß ◽  
Martin Laudien ◽  
Joachim Quetz ◽  
Hendrik Graefe ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Head And Neck ◽  
Neck Dissection ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Clinical Examination ◽  
Diagnostic Tool ◽  
Predictive Value ◽  
Positive Likelihood Ratio ◽  
Neck Metastases

Abstract Introduction Squamous cell Carcinoma of the Head and Neck (HNSCC) is the most common tumor entity of malignant processes in the head and neck area. Due to the metastasizing behavior of these tumors, the staging is indispensable for the treatment planning and requires imaging techniques, which are sensitive, specific, and as far as possible cost-effective, to benefit ultimately the patient and to ensure optimal care. Objectives The aim of the present study is to compare the clinical examination including palpation, ultrasound and computed tomography (CT)/magnetic resonance imaging (MRI) for the diagnosis of neck metastases to make the correct indication for a neck dissection. Methods Data from 286 patients with HNSCC were analyzed for neck metastases to determine which diagnostic tool is the best to answer the question if a neck dissection is necessary or not. Each study method was examined retrospectively by comparing sensitivity, specificity, the positive/negative predictive value, the positive likelihood ratio and the diagnostic accuracy. Results The ultrasound showed a sensitivity of 91.52%, a specificity of 61.67%, a positive/negative predictive value of 76.65%/84.09%, a positive likelihood ratio of 2.39 and a diagnostic accuracy of 78.95%. The clinical examination showed a sensitivity of 75.76%, a specificity of 66.12%, a positive/negative predictive value of 75.30%/66.67%, a positive likelihood ratio of 2.24 and a diagnostic accuracy of 71.68%. The CT/MRI showed a sensitivity of 78.66%, a specificity of 62.50%, a positive/negative predictive value of 74.14%/68.18%, a positive likelihood ratio of 2.10 and a diagnostic accuracy of 71.83%. Radiographically, ultrasound, as well as the clinical examination, could be judged to be free from radiation load and side effects from the contrast medium. The high dependence on the investigator when using ultrasound made reproducibility of the results difficult. Conclusions It could be shown that ultrasound was the diagnostic tool with the highest sensitivity, positive/negative predictive value, positive likelihood ratio and diagnostic accuracy by detecting and interpreting metastases in the head and neck region correctly. Whether a neck dissection should be performed depends to a large extent on the ultrasound findings.

scholarly journals Comparison of magnetic resonance arthrography with arthroscopy for imaging of shoulder injuries: retrospective study

2017 ◽  
Vol 99 (4) ◽  
pp. 271-274 ◽  
Author(s):  
R Saqib ◽  
J Harris ◽  
L Funk
Keyword(s):  
Magnetic Resonance ◽  
Positive Predictive Value ◽  
Diagnostic Accuracy ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Loose Bodies ◽  
Slap Lesions ◽  
Labral Tears ◽  
Shoulder Disorders

BACKGROUND Arthroscopy is the established ‘gold standard’ diagnostic investigation for detection of shoulder disorders. We aimed to compare the diagnostic accuracy of arthroscopy with magnetic resonance arthrography (MRA) for detection of shoulder disorders. METHODS Patients who underwent arthroscopy by a single surgeon and preoperative MRA between February 2011 and March 2012 for shoulder instability were identified. MRAs were reported by experienced musculoskeletal radiologists. Labral tears, anterior labral tears, superior labral anterior posterior (SLAP) lesions, posterior labral tears, rotator-cuff tears (RCTs), osteoarthritis, loose bodies and Hill–Sachs lesions were identified. Sensitivity, specificity, positive predictive value and negative predictive value, positive likelihood ratio and negative likelihood ratio were calculated. RESULTS A total of 194 patients were identified. The sensitivity and specificity for anterior labral tears was 0.60 and 0.92, SLAP lesions was 0.75 and 0.81, posterior labral tears was 0.57 and 0.96, any labral tear was 0.87 and 0.76, Hill–Sachs lesions was 0.91 and 0.91, RCTs was 0.71 and 0.86, osteoarthritis was 0.72 and 0.95, and loose bodies was 0.22 and 0.96, respectively. The positive predictive value and negative predictive value for anterior labral tears were 0.88 and 0.71, SLAP lesions was 0.64 and 0.88, posterior labral tears was 0.74 and 0.45, any labral tear was 0.89 and 0.71, Hill–Sachs lesions was 0.66 and 0.98, RCTs was 0.47 and 0.95, osteoarthritis was 0.70 and 0.95, and loose bodies was 0.27 and 0.95, respectively. CONCLUSIONS MRA has high diagnostic accuracy for labral tears and Hill–Sachs lesions, but whether MRA should be the first-line imaging modality is controversial.

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