In this paper, the Penrose process is used to extract rotational energy from regular black holes. Initially, we consider rotating Simpson–Visser spacetime, which describes class of geometries Kerr hole mimickers. The then studied through conformally transformed singular and solutions. Both depend on mass, spin, an additional regularisation parameter l. both cases, investigate how spin l affect ...

Nine unusual bleeding and clotting disorders (or mimickers of such) are described in the format of case presentations, with focus on clinical history, images and diagnostic tests, followed by a discussion of the disease itself and a summarizing clinical teaching point. The disease entities discussed are acquired factor VIII inhibitor, acquired von Willebrand factor inhibitor, haemophilic pseudo...

Gout is a common metabolic disease but spinal gout is rare. We report a case of gouty arthritis affecting the thoracic spine in a 76-year-old male patient with a long history of tophaceous gout who presented with bilateral lower limb weakness. Magnetic resonance imaging of his thoracic spine revealed erosions in the left pedicles of T8 and T10. The initial imaging diagnosis was metastatic disea...

We argue that the appearance of additional light rings in a shadow observation - beyond infinite sequence exponentially demagnified self-similar foreseen Kerr solution would make compelling case for existence black hole mimickers having multiple critical curves. support this claim by discussing three different scenarios spherically symmetric wormhole geometries two such curves, and explicitly w...

Glomerulations in prostatic adenocarcinoma are characterized by dilated glands containing intraluminal cribriform structures with a single point of attachment, resembling a renal glomerulus. On prostate biopsy, glomerulations are exclusively associated with carcinoma and not associated with benign mimickers. However, the Gleason grading of carcinoma with glomerulations on needle biopsy remains ...

Background: Tuberous sclerosis (TSC) is inherited as an autosomal dominant disease, characterized by skin lesion and tubers in vital organs, especially brain in three categories including subependymal nodules, cortical tubers and subependymal giant cell astrocytoma. Subependymal giant cell astrocytoma (SEGA) is an indolent neoplasm which usually arises at the cauda tha...

OBJECTIVE Macroglossia is a well-known feature of amyloidosis; however, tongue atrophy and fasciculations are rarely seen and can lead to the misdiagnosis of amyotrophic lateral sclerosis (ALS). METHODS We identified 2 unrelated patients with atypical features of tongue atrophy and fasciculations in the setting of a severe neuropathy. RESULTS Both patients were confirmed to have transthyret...