Ultrasound Guided Biopsy among Patients with Lung Lesions Undergoing Procedures in Interventional Radiology of a Tertiary Care Centre.

Introduction: Minimally invasive image-guided percutaneous core needle biopsy can obtain tissue samples for diagnosis of subpleural lung cancer, which is crucial for the correct management of lung lesions. Common complications of lung biopsy include pneumothorax, parenchymal haemorrhage and haemoptysis. The study aimed to determine the prevalence of ultrasound-guided biopsy among patients with lung lesions undergoing procedures in interventional radiology of a tertiary care centre. Methods: A descriptive cross-sectional study was performed in the Department of Radiology and Imaging from 1 August 2018 to 30 September 2019 after obtaining ethical approval from the Institutional Review Committee. USG-guided biopsy of peripheral lung lesions was performed with an 18 gauge semiautomatic biopsy instrument and a 17 gauge coaxial needle. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 188 biopsy of lung lesions, ultrasound-guided biopsies were performed in 28 (14.89%) (9.80-19.98, 95% Confidence Interval). Conclusions: The prevalence of ultrasound guided biopsy among lung lesions is lower than other studies done in similar settings. Keywords: biopsy; interventional radiology; lung neoplasms; prevalence.

Imaging spectrum in rhino-orbito-cerebral mucormycosis: a cross-sectional study.

Background: Rhino-orbital-cerebral mucormycosis (ROCM) is a life-threatening condition caused by a saprophytic fungus that predominately affecting immune-compromised patients. Early diagnosis of ROCM is of utmost importance to start the treatment as early as possible to prevent early and horrible complications of the disease. Materials and methods: This retrospective study evaluated the imaging findings of 21 patients with biopsy and KOH mount-based evidence of invasive ROCM. The imaging was obtained from a Siemens Magnetom Amira 1.5T system with a strength of 1.5T or more. The spectrum of findings was evaluated for the sites of involvement, signal intensity, contrast characteristics, necrotic component as well as orbital, infratemporal, and intracranial extensions, especially cavernous sinuses, Meckel's cave, and the brain parenchyma. Results: The mean age of the patients was 55.8±10.9 years and included 71% male. All the patients were positive for COVID-19 and the majority were diabetic. MRI showed predominant involvement of the maxillary sinus (17, 81%) and the ethmoidal sinus (15, 71.4%). The orbital extension was present in 18 cases (86%). T1-weighted imaging showed iso to low signal intensity in involved sinuses in the majority of the patients (9, 42.9%). Heterogeneously high signal intensity was observed in T2-weighted and short tau inversion recovery images in all the patients. Heterogenous contrast enhancement was present in 20 (95.2%) patients. Conclusion: The imaging spectrum of ROCM is variable. Multiplanar MRI with postcontrast images is a very useful complementary tool to the clinical evaluation to assess the extent of disease and its complications, which has a high mortality. Clinicians and radiologists should be aware of the imaging spectrums of ROCM.

Acute hydrocephalus caused by colloid cyst of third ventricle: A case report.

Colloid cysts (CCs) of third ventricle are rare benign lesions. They present with acute hydrocephalus and its sequalae like brain herniation, infarcts resulting even death in otherwise healthy individual. We present a case of an acute hydrocephalus caused by CC of third ventricle. A middle age male was airlifted from a remote district of Nepal to our hospital with no accompanying doctor. The patient had headache, multiple episodes of vomiting, abnormal body movement, and loss of consciousness for 24 hours. On examination, vitals were stable; the Glasgow Coma Scale (GCS) score was 7. The patient was intubated in emergency and an MRI brain was done. MRI showed an obstructive lesion in third ventricle with features consistent with CC and an active hydrocephalus. There were multifocal infarcts in the bilateral cerebrum, left part of mid brain and pons, left thalamus and left superior cerebellum. We inserted external ventricular drainage in emergency operation theatre within hours and endoscopic excision of the lesion was done on the next day. In histopathology, the lesion was confirmed to be a CC.

Pancreas divisum in a young patient with chronic abdominal pain as per radiological findings: A case report.

Key Clinical Message: Pancreas divisum (PD) can be one of the causes of unexplained chronic abdominal pain. In PD, the dominant duct drains the majority of the pancreas via the minor papilla, which can be conveyed in the imaging as crossing duct sign. Abstract: We report a case a of 16-year-old man who presented with unexplained chronic abdominal pain. Contrast-enhanced computed tomography and magnetic resonance cholangiopancreatography showed a bulky pancreas, but his pancreatic enzymes were normal. The crossing duct sign was prominent in imaging, which confirmed the diagnosis of PD.

Computed Tomography Chest Findings in COVID-19 Patients.

BACKGROUND: COVID-19 which has caused significant morbidity and mortality around the world has been declared by the World Health Organization to be a global health emergency. Our objective was to find out the lung parenchymal patterns commonly evident in high resolution Computed Tomography in patients with COVID-19 pneumonia. METHODS: A retrospective cross-sectional study was conducted at a tertiary multi-specialty hospital in Kathmandu, Nepal. With ethical clearance from the institutional review board, a total of 235 patients with positive reverse transcriptase polymerase chain reaction for COVID-19 and having respiratory symptoms were included in the study. High Resolution Computed Tomography images of chest were retrieved from picture archiving and communication systems retrospectively and studied for the findings commonly attributed to COVID-19 pneumonia. The data was then analyzed using Stata version 14 (Stata Corp, College Station, TX, USA). Descriptive statistics were presented as mean and median while chi-square test was used to assess the association between socio-demographic characteristics and CT severity indices. RESULTS: Out of 235 patients, 174 (74.0%) were males and 61(26%) were females with a mean age of 54.8±14.5 years. The most commonly encountered pattern of pulmonary changes was bilateral involvement in 222 (94.5%) patients followed by ground-glass opacities in 218 (92.8%) patients and peripheral predominance of ground-glass opacities in 211 (89.8%) patients. CONCLUSIONS: Chest Computed Tomography abnormalities are common in COVID-19 positive patients with respiratory symptoms. These findings can guide in the assessment of the severity of the disease as well as patient management.

Obstructed hemivagina and ipsilateral renal agenesis: magnetic resonance imaging findings in young Nepali females - a report of four cases.

Obstructed hemivagina and ipsilateral renal agenesis (OHVIRA) syndrome also known as the Herlyn-Werner-Wunderlich Syndrome is a rare embryological disorder associated with Mullerian and mesonephric duct abnormality. Case presentation: The cases presented describe the imaging (ultrasound and MRI) findings of four young females who presented with dysmenorrhea and urinary complaints. All of them had solitary kidneys with a didelphic uterus and unilateral hematometrocolpos. A proximally blind-ending ureter with distal ectopic insertion, transverse vaginal septum, and left-sided endometrioma was seen. Clinical discussion: OHVIRA syndrome is associated with duplicated uterovaginal structure with OHVIRA. Ultrasound is the first line of investigation; however, MRI better delineates the anatomy and assists in preoperative planning. Conclusion: This report highlights that earlier clinical suspicion and imaging diagnosis of OHVIRA is crucial to prevent adverse outcomes and treating complications.

Abnormal Anatomic Variation of Pancreaticobiliary Union in Magnetic Resonance Cholangiopancreatography Department of Radiology and Imaging in a Tertiary Care Centre: A Descriptive Cross-sectional Study.

Introduction: The knowledge of the variations of the abnormal anatomy of pancreaticobiliary union is of great importance for understanding various pathologies of the biliary tract, gall bladder, and pancreas as well as to avoid surgical complications and morbidity which may arise from pancreaticobiliary maljunction. Moreover, it helps in the early diagnosis and preventive treatment of pancreaticobiliary disease. The objective of this study was to find out the prevalence of abnormal anatomic variations of the pancreaticobiliary union in magnetic resonance cholangiopancreatography examinations. Methods: This descriptive cross-sectional study was done in patients referred for Magnetic resonance cholangiopancreatography examinations for various clinical indications from 1 February 2021 to 30 May 2021. Ethical approval was obtained from the Institutional Review Committee [Reference number: 306 (6-11)E 2 077/078]. The variations in the pancreaticobiliary union, length of the common channel, and angle between the common bile duct and major pancreatic duct were obtained from the 1.5T magnetic resonance scanner in 90 patients. The three­dimensional magnetic resonance cholangiopancreaticography images were visually analyzed and classified into four categories. Convenience sampling method was used. Point estimate and 90% Confidence Interval were calculated. Results: Out of 90 patients, 73 (81.11%) (74.34-87.88, 90% Confidence Interval) patients had abnormal pancreaticobiliary union with pancreaticobiliary type as the most common occurrence seen in 33 (36.67%) patients. Conclusions: The prevalence of abnormal anatomic variation of pancreaticobiliary union was found to be higher than other studies done in similar settings. Keywords: common bile duct; main pancreatic duct; magnetic resonance cholangiopancreatography.

Modern Paediatric Radiology: Meeting the Challenges in CT and MRI.

Radiology plays a very important part in the diagnosis, treatment, and follow-up of children. Computed tomography and magnetic resonance imaging are the two most crucial developments in the modern era. However, the two modalities have their challenges to overcome. Radiation dose is the most unwanted side effect of computed tomography scans while longer scan time along with sedation is a major disadvantage in children during magnetic resonance imaging. Paediatric-specific protocol selection and limiting the exposure to the area of interest aid in reducing the dose during computed tomography scans. Faster scan protocols and sequences can result in imaging without sedation in magnetic resonance imaging. Considering the radiation exposure, "as low as reasonably achievable" principle should be followed strictly in the paediatric population. In this article, possible ways for minimising the radiation dose in computed tomography, as well as effective, short, and sedation-free magnetic resonance imaging, are discussed. Keywords: computed X-ray tomography; magnetic resonance imaging; pediatrics; radiation exposure; X-ray.

Ultrasonographic Measurement of Mean Cross-sectional Area of the Median Nerve in Pregnant Women in a Tertiary Level Hospital of Nepal: A Descriptive Cross-sectional Study.

INTRODUCTION: Pregnancy is one of the predisposing factors for carpal tunnel syndrome, which may manifest as swelling of the median nerve. The purpose of this study was to obtain the mean cross-sectional area of median nerve using ultrasound in pregnant females at carpal tunnel inlet and its variations with different trimesters. METHODS: A total of 102 pregnant females at first, second and third trimesters were evaluated for median nerve with ultrasonography. Mean cross sectional area of median nerve was calculated in both hands by using two methods- direct and indirect. The study was conducted after obtaining ethical clearance from Institutional Review Board of Institute of Medicine, and after obtaining the written informed consent from the subjects. Convenience sampling technique was used. Data obtained were compiled and analyzed using Statistical Package for the Social Sciences version 20. RESULTS: The overall mean cross-sectional area was 6.84±1.09 mm2 using direct method and 7.09±1.19 mm2 using indirect method. The values obtained with indirect method were greater than that obtained with direct method. Mean cross-sectional area of the median nerve were higher at third trimester in both hands and by both direct and indirect methods. CONCLUSIONS: From the study conducted, the normal value of mean cross-sectional area of median nerve in pregnant females was established.

Epidemiological and Clinical Pattern of Pediatric Supracondylar Fracture of Humerus in A Provincial Hospital: A Descriptive Cross-sectional Study.

INTRODUCTION: Supracondylar fractures of humerus are the most common elbow fractures in children consisting of about 15% of all pediatric fractures and more than half of all elbow fractures. A high incidence of nerve injures, and vascular injuries make this fracture a serious injury. Our study aims to study on the clinical and demographic pattern of pediatric supracondylar fracture cases presenting in the hospital retrospectively. METHODS: We conducted a descriptive cross-sectional study in Seti Provincial Hospital in the month of December. The data from the medical record section was retrospectively collected. A whole sampling technique was used. The descriptive statistical analysis was done. RESULTS: Seven hundred cases were studied, among which the most common age group was found to be 5-10 410 (58.57%). Most of the cases presented in the emergency department 513 (73.28%), and the most common time of presentation was from 3 AM to 6 AM 170 (24.28%). CONCLUSIONS: Supracondylar fracture cases presented as a common injury among pediatric population. It was presented as an emergency more than general cases.

Estimation of Hepatic Elasticity by Shear Wave Sonoelastography among Asymptomatic Individuals in a Tertiary Level Hospital.

BACKGROUND: Shear wave elastography is currently most widely used method for determining the elasticity of liver. Liver fibrosis, final common pathway of chronic liver disease, is associated with increased liver stiffness. This study aimed to obtain normal liver elasticity in Nepalese population, as it can be used as reference in future for determination of elasticity in abnormal liver. METHODS: Quantitative prospective study was done in 132 individuals with normal liver function tests. Shear wave elastography was done to measure elasticity of both lobes of liver and thus obtained values were also correlated with age, gender and fatty changes in liver. RESULTS: Forty seven out of 132 individuals had fatty liver. Mean elasticity of liver was 4.40±0.60 kPa with range of 3.12-6.62 kPa. There was no significant difference between mean elasticity of right and left lobe of liver. No significant correlation was found between mean liver elasticity with age and gender. There was statistically significant difference in the mean elasticity between non-fatty and fatty liver (p=0.041). CONCLUSIONS: The study established normal elasticity of liver in Nepalese population and this reference can be used to obtain abnormal liver elasticities.

Pediatric Radiology in Era of COVID-19, International Consensus and What Lies Beyond Pneumonia: A Review.

Diagnostic radiology plays a crucial role in children. The pediatric population has been less studied than the adult population since the initial period of the COVID-19 pandemic to date. Realizing the potential utility of structured reporting, different guidelines and international consensus statements regarding COVID-19 in the pediatric population have been released in recent times. Different clinical and radiological manifestations in children have been evolving in this period of uncertainty and are different from the adult population in certain aspects. Apart from the involvement of lungs, a multisystemic inflammatory syndrome in children or pediatric multi systemic inflammatory syndrome is unique in children. Therefore, awareness of the recent consensus, structural uniform reporting and multi-organ involving patterns in COVID-19 can guide radiologists for a better understanding of this complex novel disease leading to early diagnosis and timely treatment of affected children.

Mean Carotid Intima-Media Thickness in Patients with Type 2 Diabetes Mellitus Attending Tertiary Care Center: A Descriptive Cross-sectional Study.

INTRODUCTION: Sonographic carotid intima media thickness measurement in diabetic patients is an important tool for estimating the risk of cardiovascular and cerebrovascular events. It is a simple, noninvasive and widely available tool which can give idea of further treatment needed. The objective of this study was to determine the mean intima media complex thickness in patients with type II diabetes mellitus attending a tertiary care center. METHODS: This was a descriptive cross-sectional study done in 64 patients with the type II diabetes mellitus patients visiting diabetic clinic of Tribhuvan University Teaching Hospital, sent for carotid Doppler examination in the department of radiology and imaging. Ethical approval was taken from the Instituitonal Review Board. Convenient sampling method was used. Carotid intima media thickness was measured on both sides and mean intima media thickness was calculated. Mean intima media thickness for male and female diabetic patients was also calculated separately. Statistical Package for Social Sciences version 25 was used for data analysis. RESULTS: The mean carotid intima media thickness was 0.86±0.13mm with range from 0.7mm to 1.3mm. Mean intima media thickness in male was 0.832±0.094mm and in female it was 0.904±0.144mm. Among 64 patients, 30 (46.8%) were female and 34 (53.3%) were male. Age of the patients ranged from 35 years to 68 years with mean age of 52.4±6.54 years. CONCLUSIONS: Carotid intima media thickness in patients with type II diabetes mellitus showed higher values than that of mean value from study done in similar study. Female had higher mean intima media thickness than male.

Anatomical Variations in Circle of Willis in Patients Undergoing CT Cerebral Angiography in a Tertiary Hospital in Nepal: A Descriptive Cross-sectional Study.

INTRODUCTION: Variation in Circle of Willis is a commonly encountered entity in patients undergoing computed tomography angiography, identification of which is crucial in the management of patients with vascular pathologies. The aim of the study was to find out the anatomical variations in the Circle of Willis in patients undergoing Computed Tomography cerebral angiography in a tertiary hospital in Nepal. METHODS: This is a descriptive cross-sectional study involving 95 patients using convenient sampling techniques who were sent to the Department of Radiology and Imaging, Tribhuvan University Teaching hospital, for further evaluation of suspected vascular pathologies in the brain from April 2017 to September 2017. Ethical approval was taken from the Institutional Review Committee of the Institute of Medicine with reference number 326 (6-11-E). CT angiographic images of these patients were evaluated for the presence of variations in Circle of Willis, aneurysms, and other vascular pathologies. Data were analyzed using SPSS. RESULTS: Among 95 subjects included in the study, the anatomical variations in the arteries of Circle of Willis was seen in 52 (54.7%) patients, hypoplastic posterior communicating artery being the most common variation 33 (34.7%). The aneurysm was seen in 22 (23.2%) of cases. CONCLUSIONS: CT Angiography is a commonly performed imaging modality for suspected cases of cerebral aneurysms and various other vascular pathologies. Multidetector computed tomography can effectively detect variations in arteries of Circle of Willis, recognition of which is crucial in operative management of vascular pathologies.

Normal Anatomy and Variants of Renal Vasculature with Multidetector Computed Tomography in a Tertiary Care Hospital: A Descriptive Cross-sectional Study.

INTRODUCTION: Preoperative multisection computed tomography evaluation can provide necessary anatomic information in minimally invasive surgeries. This study was done to estimate the preva-lence and pattern of variations of renal vasculature through contrast-enhanced computed tomogra-phy in patients referred to the radiology department of a tertiary care hospital. METHODS: A descriptive cross-sectional study was conducted from 6th April 2016 to 6th April 2017. Ethical approval was taken. The triple-phase contrast-enhanced computed tomography was per-formed on 188 patients enrolled through convenient sampling. The images were evaluated in un-enhanced, arterial, and venous phases for the vascular variants. Data were analyzed based on the anatomical types of variations and descriptive statistics such as frequency and percentage using the Statistical Package for the Social Sciences. RESULTS: Out of the 188 patients, 60 (31.9%) had accessory renal arteries. The most common variant was hilar arteries which comprised 38 cases (20.2%) whereas polar arteries were present in 21 (11.1%)cases and the capsular artery was present in one (0.5%) case. Early bifurcation of the renal artery was noted in 15 (8%) cases with 10 (5.3%) on the right and 5 (2.7%) on the left side. Twelve (6.3%) cases of the double right renal vein were noted whereas retroaortic left renal vein was noted in only 4(2.1%) cases. CONCLUSIONS: Based on our study, almost one in three patients had accessory renal arteries and eighty-five out of a thousand patients had variants of renal veins.