background the occult hepatitis b infection (obi) is defined as the presence of hepatitis b virus (hbv) dna in the sera or in the liver biopsy and the absence of hepatitis b surface antigen (hbsag) by serological test. objectives the current study aimed to evaluate the occult hbv infection by polymerase chain reaction (pcr) and determine hbv genotyping among the patients with abnormal alanine t...

BACKGROUND The phenomenon of occult carcinoma maybe observed in patients with clinically unilateral papillary thyroid microcarcinoma (PTMC). Although many studies have reported that the BRAFT1799A mutation is associated with aggressive PTMC, the relationship between BRAFT1799A mutation and occult carcinoma is unclear. The aim of this study was to investigate the risk factors, including BRAFT179...

PURPOSE The purpose of this study was to estimate the incidence of occult gastrointestinal (GI) primary tumours in patients with metastatic cancer of uncertain primary origin and evaluate their influence on treatments and overall survival (OS). MATERIALS AND METHODS We used population heath data from Manitoba, Canada to identify all patients initially diagnosed with metastatic cancer between ...

background while colorectal cancer (crc) is one of the most preventable causes of cancer mortality, it is one of the leading causes of cancer death in canada where crc screening uptake is suboptimal. given the increased rate of mortality and morbidity among mental health patients, their condition could be a potential barrier to crc screening due to greater difficulties in adhering to behaviours...

BACKGROUND Currently there is no clinical consensus on how to treat occult pneumothoraces in adults, and even less research has been done in children. We sought to understand the outcomes of severely injured, ventilated children with occult pneumothoraces. METHODS Using the Alberta Trauma Registry, we retrospectively reviewed the charts of all ventilated pediatric patients at a children's hos...

IMPORTANCE Occult hernias are symptomatic but not palpable on physical examination. This is more commonly seen with inguinal hernias. Early diagnosis and treatment of occult hernias are essential in relieving symptoms and improving patients' quality of life. OBJECTIVE To determine the effectiveness of imaging-ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI)...

OBJECTIVE To investigate the prevalence of occult HBV infection (OBI) among children and to characterize virology of occult HBV, we conducted an epidemiological survey. METHODS 186 HB-vaccinated infants born to HBsAg-positive mothers were included in the study. Serological tests for HBV markers were performed using commercial ELISA kits. Real-time quantitative PCR and nested PCR were used to ...

PURPOSE Occult intertrochanteric fractures are misdiagnosed as isolated greater trochanteric fractures in some cases. We investigated the utility of three-dimensional computed tomography (3D-CT) and magnetic resonance imaging (MRI) in the diagnosis and outcome management of occult intertrochanteric fractures. MATERIALS AND METHODS This study involved 23 cases of greater trochanteric fractures...