Black holes and wormholes are solutions of Einstein's field equations, both which, from afar, look like a central mass. We show here that although at large distances behave Newtonian objects, close to the event horizon or throat, black have different tidal effects on stars, due their respective geometries. quantify this difference by numerical procedure in Schwarzschild hole exponential wormhol...

Acute optic neuritis (ON) is an inflammation of the optic nerve that is commonly associated with multiple sclerosis (MS). However, the differential diagnosis of MS is extensive, and variants and mimickers of MS can easily confound the diagnosis. This case study reviews the current diagnostic work up strategies for MS and teaches a practical lesson: diagnosis depends on both clinical findings an...

Osteoid osteoma is a small common benign osteoblastic tumor. Foot osteoid osteomas represent a minority of cases. Patients are usually male children and young adults within the third decade. In our case report we describe an osteoid osteoma of the calcaneus in a young adult, semi-professional basketball player. Starting from the case description, we aim to: 1) Analyse the reasons of initial mis...

Ménétrier's disease is a rare protein-losing hypertrophic gastropathy. Histologically, it can be mistaken for other disorders showing hypertrophic gastropathy. The pathogenesis of Ménétrier's disease is not fully understood; however, it appears that the epidermal growth factor receptor (EGFR) ligand, transforming growth factor alpha, contributes to the pathogenesis of this disorder. In this rev...

Previous researchers obtained various apparent diffusion coefficient (ADC) cutoff values to differentiate endometrial carcinoma from benign mimickers with 1.5T magnetic resonance imaging (MRI). Few studies have used 3T MRI or validated the effectiveness of these cutoff ADC values prospectively. This study was designed in two stages to obtain a cutoff ADC value at 3T MRI and to validate prospect...

This study aimed to explore the utility of arterial spin labeling perfusion-weighted imaging (ASL-PWI) in patients with suspected seizures in acute settings. A total of 164 patients who underwent ASL-PWI for suspected seizures in acute settings (with final diagnoses of seizure [n = 129], poststroke seizure [n = 18], and seizure mimickers [n = 17]), were included in this retrospective study. Per...

For more than 100 years, neuromyelitis optica (NMO), known as Devic disease, was thought to be a variant of multiple sclerosis (MS), despite observations that acute episodes were restricted to the optic nerve and spinal cord and were more immediately devastating than in MS. It was not until 1999—when neurologists and MS specialists Brian G. Weinshenker, MD, at Mayo Clinic in Rochester, Minnesot...

The recent opening of gravitational wave astronomy has shifted the debate about black hole mimickers from a purely theoretical arena to phenomenological one. In this respect, missing definitive quantum gravity theory, possibility have simple, meta-geometries describing in compact way alternative phenomenologically viable scenarios is potentially very appealing. A recently proposed metric by Sim...