Diagnostic Accuracy of MRC in Benign and ML in Obstructive Jaundice Patients, Taking Histopathology as Gold Standard

2021 ◽  
Vol 15 (12) ◽  
pp. 3421-3423
Author(s):  
Kamran Naseem ◽  
Malik Mudasir Hassan ◽  
Sarah Nisar

Objectives: To find out the diagnostic accuracy of magnetic resonance cholangiopancreatography in benign and malignant lesions in patients of obstructive jaundice, taking histopathology as gold standard. Material and methods: This cross sectional study was conducted at Department of Radiology, Bahawal Victoria Hospital, Bahawalpur October 2019 to April 2020. A total of 164 patients with suspected cases of obstructive jaundice and age 25-65 years of either gender were included. Then magnetic resonance cholangiopancreatography (MRCP) was performed in every patient by 1.5 Tesla MR System using a torso phased-array coil. After this, each patient was undergone operation in the concerned ward. Findings of MRCP were compared with the findings of histopathology. Results: In MRCP positive patients, 78 were true positive (TP) and 13 were false positive (FP). Among 73, MRCP negative patients, 08 were false negative (FN) whereas 65 were True Negative (TN). Overall specificity, sensitivity, NPV, PPV and diagnostic accuracy of magnetic resonance cholangiopancreatography in benign and malignant lesions in patients of obstructive jaundice, taking histopathology as gold standard was 90.70%, 83.33%, 85.71%, 89.04% and 87.20% respectively. Conclusion: This study concluded that magnetic resonance cholangiopancreatography (MRCP) is the non-invasive modality of choice with diagnostic accuracy in diagnosing in benign and malignant lesions in obstructive jaundice patients. Keywords: obstructive jaundice, sensitivity, magnetic resonance imaging.

2021 ◽  
Vol 71 (3) ◽  
pp. 1015-19
Author(s):  
Muhammad Atif ◽  
Fida Hussain ◽  
Zaigham Salim Dar ◽  
Jameela Khatoon ◽  
Saadia Ajmal ◽  
...  

Objective: To determine diagnostic accuracy of 99mTc labelled Ubiquicidin (29-41) SPECT/CT for detection of osteomyelitis in diabetic foot patients by taking bone biopsy as gold standard. Study Design: Cross-sectional validation study. Place and Duration of Study: Nuclear Medical Centre, Armed Forces Institute of Pathology, from Apr 2017 to Mar 2018. Methodology: Study assessed 122 patients of both genders, aged between 30-80 years (mean age=55.3 years), presenting with diabetic foot ulcers having suspicion of osteomyelitis, by 99mTc-Ubiquicidin (29-41) SPECT/CT followed by bone biopsy (histopathology and culture) taken as gold standard. Results: Among 122 patients [94 male (77%) and 28 female (23%)], osteomyelitis was histopathologically confirmed in 113 patients. 107 out of these patients were positive for osteomyelitis on 99mTc-UBI (29-41) SPECT/CT (true positives) while 6 were false negative. Out of 9 patients declared negative for osteomyelitis on histopathology and culture, 8 were negative on 99mTc-UBI (29-41) SPECT/CT as well (true negative) while only 1 case came out to be positive (false positive). Thus, the 99mTc-UBI (29-41) scan showed 94.6% sensitivity, 88.89% specificity, 99% positive predictive value, 57% negative predictive value with overall 94.2% diagnostic accuracy. Conclusion: 99mTc labelled Ubiquicidin (29-41) SPECT/CT scan can precisely localize infective focus, in diabetic foot osteomyelitis, with simultaneous discrimination between bone and soft tissues.


2021 ◽  
Vol 15 (11) ◽  
pp. 3093-3095
Author(s):  
Iqra Rafique ◽  
Anam Manzoor ◽  
Sana Naseer

Objective: To assess the diagnostic accuracy of ultrasonography for detection of Achilles tendinopathy by taking surgical findings as gold standard. Design of the Study: It was a descriptive cross-sectional study. Study Settings: This study was carried out at Department Of Diagnostic Radiology And Diagnostic Imaging Combined Military Hospital, Lahore from 23rd December 2017 to 22nd June 2018. Material and Methods: A total of 70 patients of age 20-70 years, of either gender presenting with severe pain and swelling in area of Achilles tendon were included. Patients with heel pain having concurrent heel ulcer, eczematous changes or calcaneal fractures, muscular dystrophy and previous surgery were excluded. All the patients were then underwent ultrasonography and findings were noted for presence or absence of Achilles tendinopathy. Each Ultrasonographic finding were compared with surgical findings. Results of the Study: Mean age was 41.24 ± 10.34 years. Out of these 70 patients, 46 (65.71%) were male and 24 (34.29%) were females with male to female ratio of 1.9:1. In USG positive patients, 40 (True Positive) had Achilles tendinopathy and 04 (False Positive) had no Achilles tendinopathy on surgical findings. Among, 26 USG negative patients, 03 (False Negative) had Achilles tendinopathy on surgical findings whereas 23 (True Negative) had no Achilles tendinopathy on surgical findings. Overall sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of ultrasonography for detection of Achilles tendinopathy by taking surgical findings as gold standard was 93.02%, 85.19%, 90.91%, 88.46% and 90.0% respectively. Conclusion: This study concluded that diagnostic accuracy of ultrasonography for detection of Achilles tendinopathy is quite high. Keywords: Achilles tendinopathy, ultrasonography, sensitivity.


Author(s):  
Kaka Renaldi ◽  
Rudy Kurniawan ◽  
Dadang Makmun

Background: The common etiologies of obstructive jaundice were biliary stone and biliary neoplasms. The gold standard to diagnose malignancy causing obstructive jaundice is endoscopic retrograde cholangiopancreatography (ERCP) with sensitivity and specificity of 95% and 100%. However, ERCP is an invasive procedure associated with several complications such as bleeding, pancreatitis, and perforation. Other modalities include endoscopic ultrasonography (EUS) and magnetic resonance cholangiopancreatography (MRCP). Thus, we aim to evaluate the sensitivity and specificity of EUS with MRCP in patients with malignancy causing obstructive jaundice.Method: This was a cross-sectional study that calculates the sensitivity and specificity of EUS and MRCP in diagnosing malignancy causing obstructive jaundice compared with the gold standard, histopathology examination from ERCP. The study was conducted in the Medical Record Unit, Gastroenterology Division, Dr. Cipto Mangunkusumo National General Hospital, on January – March 2019 by using a consecutive sampling method. The date of diagnosis was collected from the medical record within five years. Subjects were selected based on inclusion criteria which include patients aged ≥ 18 years old who were diagnosed with malignancy causing obstructive jaundice by ERCP, and had underwent EUS or MCRP with a maximum interval of 3 months to ERCP. The exclusion criteria include patients with previous evidence of biliary tract malignancy or concurrent parenchymal jaundice. Statistical analysis was performed using IBM SPSS Statistics 20.Results: There were 54 subjects with a mean age of 56.48 ± 11.37 years. Subjects consisted of 29 (53.7%) males and 25 (46.3%) females. The median period between EUS to ERCP was 0-33 days, while MRCP to ERCP was 1-53 days. The sensitivity, specificity, positive predictive value, and negative predictive value to diagnose obstructive jaundice due to malignancy were 96%, 60%, 96%, 60% in EUS, and 90%, 40%, 94%, 29% in MRCP, respectively.Conclusion: EUS was more superior to MRCP in the diagnosis of  malignancy causing obstructive jaundice.


2021 ◽  
Vol 15 (10) ◽  
pp. 2772-2775
Author(s):  
Anam Manzoor ◽  
Iqra Rafique ◽  
Sana Naseer

Objective: To assess the diagnostic accuracy of sonomammography in diagnosis of BIRADS ≥4 suspicious breast lesions taking histopathology as gold standard. Design of the Study: It was a descriptive cross-sectional study. Study Settings: This study was carried out at Department Of Diagnostic Radiology And Diagnostic Imaging Combined Military Hospital, Lahore from January 2017 to June 2017. Material and Methods: A total of 190 patients of age 30-70 years, presenting with palpable breast lesions with BIRAD ≥4 undergoing biopsy under local anesthesia were included. Patients with already diagnosed with breast cancer and recurrent breast lesion were excluded. Then all patients were undergone USG by using a high-resolution unit (PLM703AT) with a linear array probe centered at 7, 5 MHz, along with mammography using mamomet 3000 NOVA SIEMENS, General Electric Medical Systems, Milwaukee. Patients were labeled as positive or negative. Sonomammography findings were correlated with histopathological findings. Results of the Study: In 117 sonomammography positive patients, 107 (True Positive) had malignant breast lesions and 08 (False Positive) had benign on histopathology findings. Among, 75 sonomammography negative patients, 06 (False Negative) had malignant breast lesions on histopathology whereas 69 (True Negative) had benign lesions on histopathology. Overall sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of sonomammography in diagnosis of BIRADS ≥4 suspicious breast lesions taking histopathology as gold standard was 94.69%, 89.61%, 93.04%, 92.0% and 92.63% respectively. Conclusion: This study concluded that diagnostic accuracy of sonomammography in diagnosis of BIRADS ≥4 suspicious breast lesions is quite high. Keywords: Breast lesions, malignant, sonomammography, sensitivity.


Esculapio ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Anum Yousaf ◽  
Misbah Durrani ◽  
Khoala Riaz ◽  
Ume Kalsoom ◽  
Hassan Parvez

Objective: Various imaging modalities can be employed for the placenta accreta diagnosis like USG and MRI, however, their exact diagnostic accuracy is yet to be established. This study was conducted for determining the accuracy of ultrasonography in diagnosing morbidly adherent placenta in women with a previous scar, taking the per-operative findings as gold standard. Methods: This descriptive cross-sectional study was carried out at department of Radiology, Benazir Bhutto Hospital, Rawalpindi from 6th January 2019 to 5th July 2019. Using non-probability purposive sampling 118 pregnant women with single pregnancy of age 18-40 years were included. Both grey scale and color doppler findings of ultrasound were employed for ascertaining presence or absence of morbidly adherent placenta. Per-operative findings of all patients who underwent cesarean section afterwards in their respective wards were registered. The findings of USG were then compared with the per-operative observations. Results: Among patients in whom USG findings were of morbidly adherent placenta, 60 were true positive while 05 were false positive, whereas, in the patients with no evidence of morbidly adherent placenta on USG, 03 were false negative while 50 were true negative. The sensitivity, specificity, positive predictive value negative predictive value and diagnostic accuracy of USG in diagnosing morbidly adherent placenta in previous scar women, taking per -operative findings as gold standard was 95.24%, 90.91%, 92.31%, 94.34% and 93.22% respectively. Conclusion: It can be inferred from our study that USG is a very sensitive and accurate non-invasive imaging technique for the diagnosis of morbidly adherent placenta. Keywords: morbidly adherent placenta, ultrasonography, sensitivity. How to cite: Yousaf A., Durrani M., Riaz K., Kalsoom U., Parvez H. Diagnostic accuracy of ultrasonography in diagnosing morbidly adherent placenta, taking intra-operative findings as gold standard. Esculapio. 2021; 17(01): 71-74


BioMedica ◽  
2021 ◽  
Vol 37 (3) ◽  
pp. 1-14
Author(s):  
Sumera Nighat ◽  
Mahwish Zahra ◽  
Azhar Mahmood Javed ◽  
Shabbir Ahmad ◽  
Sadia Anwar ◽  
...  

<p><strong>Background and Objective:</strong> Thyroid imaging reporting and data system (TI-RADS) is developed to determine the risk of malignancy in patients with thyroid nodules. The aim of this study was to determine the diagnostic accuracy of TI-RADS classification for diagnosing malignant thyroid nodules taking Fine needle aspiration cytology (FNAC) as a gold standard in the local population.</p> <p><strong>Methods:</strong> In this cross-sectional validation study, 201 patients presenting with thyroid nodules at the Department of Radiology, Bakhtawar Amin Hospital Multan, Pakistan from July 2020 to December 2020 were included. In all patients, thyroid nodules were evaluated on grey scale (B-mode) modality. TI-RADS score was calculated for each patient. Patients with TI-RADS score 4 and 5 were labelled as having malignant nodules. After that FNAC samples were taken and sent for histopathologic evaluation of thyroid nodules. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of TI-RADS taking FNAC as a gold standard were determined.</p> <p><strong>Results:</strong> The mean age of the patients was 47.8 &plusmn; 4.5 years; there were 129 (67.2%) women and 72 (35.82%) men. There were 42 patients who tested true positive and 36 patients tested false positive and 12 patients were false negative and 111 patients true negative. The TIRADS sensitivity was 77.8%, specificity was 75.5%, PPV was 53.8%, and NPV 90.2%. the diagnostic accuracy was 76.1%.</p> <p><strong>Conclusion: </strong>Differentiating benign thyroid nodules from malignant using the TI-RADS score has a high diagnostic accuracy. Our study results support the TIRADS as a first-line imaging evaluation for diagnosis of thyroid malignancy.</p>


2021 ◽  
pp. 61-64
Author(s):  
Santosh Kumar Prasad ◽  
Nupur Nupur ◽  
Akshit Pathak ◽  
Indra Shekhar Thakur ◽  
Vijay Shankar Prasad

INTRODUCTION: Jaundice means yellow due to the yellowish discolouration of skin, sclera, and mucous membrane seen in jaundice caused by bilirubin pigment. It is divided in to two forms obstructive(surgical) and non- obstructive (non-surgical). AIM AND OBJECTIVE: To evaluate patients of obstructive jaundice by sonography and magnetic resonance cholangiopancreatography and compare the reporting and ndings by both the modalities. MATERIALS AND METHODS: Cross sectional observational study done from November 2018 to October 2020 and consists of 32 patients who had clinical jaundice and consented to being subjected to both ultrasound and MRCP. OBSERVATIONS:Both USG and MRCP were able to detect extrahepatic CBD dilatation equally in 25 patients. In 5(15.6%) patients USG and MRI both demonstrated intrahepatic mass causing obstruction at the level of conuence of right and left hepatic duct or CHD. Ultrasonography was able to detect the intrinsic mass of the extrahepatic common bile duct in 2(6.2%) patients out of 32 patients in our study population. MRCP could detect the same in 6(18.7%) patients. In our study narrowing of CBD with stricture formation and upstream dilatation of biliary tree was identied in 10(31.2%) patients on MRCP. Ultrasound could diagnose the same in one patient. Both USG and MRCP were able to detect pancreatic head mass as well as pseudocyst. CONCLUSION: The accuracy of MRCP was found to be comparable to that of ERCP for diagnosis of etiology for obstructive jaundice. MRCP allows better lesion characterization and assessment. However, the patchy availability of MR machines become the main achilles heel for the surgeons as well as the radiologists. Hence the valuable role of the omnipresent ultrasonography become immense.


2021 ◽  
Vol 15 (10) ◽  
pp. 2682-2684
Author(s):  
Fiza Asif ◽  
Sobia Zafar ◽  
Tehmina Zafar ◽  
Tayyaba Majeed ◽  
Zahid Mahmood

Background: Cesarean section uterine scar dehiscence (CSD) is a rare but notable complication of Lower segment cesarean section (LSCS) surgery. The cause for a uterine scar dehiscence is based on the etiology behind the uterine scar defect or any event that would predispose the cesarean scar to dehisce. Globally accepted option for assessing the CS scar is transvaginal ultrasonography of the non-pregnant uterus. Objective: To determine the diagnostic accuracy of lower uterine segment scar thickness≤1.6mm in the prediction of scar dehiscence in patients with previous one LSCS who are undergoing repeat LSCS after trial of labour taking intraoperative findings as gold standard. Material and methods: This cross sectional study was conducted in Services Hospital, Lahore for 6 months. The Non probability consecutive sampling technique was used to include women with previous one LSCS at 36-38 weeks were asked to get their TVS done for scar thickness. Women with scar thickness≤1.6mm and scar thickness>1.6mm were identified. Their intraoperative findings of scar dehiscence were confirmed. All the data was entered and analyzed on SPSS version 20. Results: The mean age of patients was 29.87±6.07 years. The emergency LSCS was done in 599(49.1%) patients and elective LSCS was done in 621(50.9%) patients. The sensitivity, specificity & diagnostic accuracy of TVS was 98.31%, 99.05% & 98.69% respectively. Conclusion: According to our study results the TVS for uterine scar is a very useful and effective tool in the prediction of scar dehiscence in patients with previous one LSCS taking intraoperative findings as gold standard. Keywords: Transvaginal sonography, TVS, Uterine, Scar, dehiscence, LSCS, Intraoperative


2020 ◽  
Vol 37 (1) ◽  
Author(s):  
Sohbia Munir ◽  
Sohail Ahmed Khan ◽  
Hina Hanif ◽  
Maria Khan

Objective: To evaluate the diagnostic accuracy of magnetic resonance imaging (MRI) in detection of intra-axial gliomas in suspected cases keeping histopathology as gold standard. Methods: This cross-sectional study was conducted at Dow Institute of Radiology, DUHS from October 2017 - April 2018. Patients of either gender aged 30-70 years presenting with headache were included. Patients already diagnosed and referred for follow up were excluded. MRI was performed on 1.5T scanner by a trained MRI technician. T1, T2, FLAIR, diffusion weighted and T1 post contrast images were acquired and reviewed by two radiologists having more than five years post fellowship experience. Sensitivity, specificity, PPV, NPV and diagnostic accuracy of MRI for intraaxial gliomas was calculated taking histopathology findings as gold standard. Results: Mean age of the patient`s was 51.71 ±10.85 years. Positive intraaxial gliomas on MRI were observed in 123 (79.90%) patients while on histopathology, positive intraaxial gliomas were observed in 131 (85.10%) patients. Diagnostic accuracy of MRI in detection of intra-axial gliomas taking histopathology findings as gold standard showed sensitivity, specificity, positive predicted value (PPV), negative predicted value (NPV) and overall diagnostic accuracy as 89.31%, 73.91%, 95.12%, 54.84% and 87.01%. Conclusions: MRI has high sensitivity, moderate specificity and high diagnostic accuracy in detection of intraaxial gliomas. doi: https://doi.org/10.12669/pjms.37.1.2489 How to cite this:Munir S, Khan SA, Hanif H, Khan M. Diagnostic accuracy of magnetic resonance imaging in detection of intra-axial gliomas. Pak J Med Sci. 2021;37(1):125-130. doi: https://doi.org/10.12669/pjms.37.1.2489 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


2021 ◽  
Vol 28 (08) ◽  
pp. 1166-1171
Author(s):  
Mahwish Yasin ◽  
◽  
Huma Muzaffar ◽  
M Ahmed Zamir ◽  
Talha Munir ◽  
...  

Objective: The objective of the study was to: determine the diagnostic accuracy of AST to platelet ratio index in detecting significant fibrosis in chronic hepatitis C patients by using histopathology as gold standard. Study Design: Cross Sectional study. Settings: Department of Medicine, DHQ Hospital, Faisalabad. Period: 1st Oct 2017 to March 2018. Results: In this study, out of 158 cases, 48.73%(n=77) were between 25-40 years while 51.27%(n=81) were between 41-60 years, mean+SD was calculated as 40.94+9.10 years, 55.06%(n=87) were male and 44.94%(n=71) were females, mean AST and platelet count was calculated as 1.68+0.54 and 191.0+43.75, frequency of significant fibroids in chronic hepatitis C patients by using histopathology as gold standard reveals as 53.16%(n=84) while 46.84%(n=74) had no findings of this morbidity. The diagnostic accuracy of AST to platelet ratio index in detecting significant fibrosis in chronic hepatitis C patients by using histopathology as gold standard was recorded which shows 51.27%(n=81) as true positive, 2.53%(n=4) false positive, 1.89%(n=3) false negative and 44.31%(n=70) were recorded as true negative, sensitivity, specificity, positive predictive value, negative predictive value and accuracy rate was computed as 96.43%, 94.59%, 95.29%, 95.89% and 95.57% respectively. Conclusion: The results of the study reveal that diagnostic accuracy of AST to platelet ratio for detection of significant fibrosis in chronic Hepatitis C patients was satisfactory and it may be used for the avoidance of invasive liver biopsy to initiate the antiviral therapy in these patients.


Sign in / Sign up

Export Citation Format

Share Document