MediAI

  Introduction Cavernomas, also known as cerebral cavernous malformations (CCMs) or cavernous hemangiomas , are among the most intriguing and clinically significant vascular anomalies of the central nervous system. These lesions are increasingly recognized due to advances in neuroimaging, particularly magnetic resonance imaging (MRI). Despite being angiographically occult, cavernomas contribute to a significant proportion of neurological morbidity worldwide, manifesting with seizures, headaches, and focal neurological deficits. This article provides a comprehensive review of cavernoma, covering its cause, etiology, pathophysiology, epidemiology, clinical presentation, imaging features, treatment, and prognosis , while also incorporating evidence-based references for an advanced global readership. Etiology and Cause Cavernomas are vascular malformations composed of abnormally dilated capillary vessels with little or no intervening brain parenchyma. Their walls are fragile, ...

  Keywords: Mounier-Kuhn syndrome, Tracheobronchomegaly, Rare respiratory disorder, Bronchiectasis, Chronic lung disease, Pulmonology Introduction Mounier-Kuhn Syndrome (MKS), also known as tracheobronchomegaly , is an exceedingly rare respiratory disorder first described by Pierre Mounier-Kuhn in 1932. It is characterized by marked dilation of the trachea and main bronchi due to atrophy of the smooth muscle and elastic fibers in the airway wall . This results in recurrent respiratory infections, airway collapse, bronchiectasis, and progressive decline in pulmonary function. Although rare, the syndrome is increasingly recognized due to advancements in high-resolution imaging modalities such as CT. Given its clinical overlap with COPD , cystic fibrosis , and connective tissue disorders such as Marfan and Ehlers-Danlos syndrome, awareness of Mounier-Kuhn syndrome is crucial for accurate diagnosis and management. This column provides an expert-level comprehensive review of Mou...

  Introduction Uterine anomalies are a crucial aspect of reproductive medicine, often influencing fertility, pregnancy outcomes, and obstetric management. Among these, uterine didelphys, also known as a duplicated uterus, represents a rare Müllerian duct anomaly. This column will explore the cause, etiology, pathophysiology, epidemiology, clinical presentation, imaging features, treatment, and prognosis of uterine didelphys with intrauterine gestation, supported by imaging examples and case findings.  Etiology and Pathophysiology Uterine didelphys (duplicated uterus) is classified as a Class III Müllerian duct anomaly . It results from abnormal or failed fusion of the paramesonephric ducts (Müllerian ducts) during fetal development around the 8th to 9th weeks of gestation. Unlike a septate uterus, which arises from failed resorption of the medial septum, uterine didelphys is a true duplication anomaly, producing two completely separate uterine cavities, two endometrial ca...

Introduction Brain tumors represent one of the most complex and challenging conditions in modern medicine, affecting both children and adults. They encompass a wide spectrum of diseases that differ in cellular origin, biological behavior, anatomical location, and clinical manifestations . With the rapid development of neuroimaging, molecular genetics, and targeted therapy , the understanding and management of brain tumors have significantly advanced. This article provides a comprehensive overview of brain tumors , focusing on their etiology, pathophysiology, epidemiology, clinical presentation, imaging findings, treatment options, and prognosis . It also incorporates essential classifications and representative imaging findings ([Figure 1–5]) to illustrate key tumor types. 1. Etiology and Causes of Brain Tumors The causes of brain tumors remain multifactorial and not fully understood. Several genetic, environmental, and biological factors contribute to tumorigenesis. Genetic M...

Keywords: Gastric volvulus with perforation, gastric volvulus, stomach torsion, acute abdomen, gastrointestinal emergency, gastric perforation, CT imaging gastric volvulus Introduction Gastric volvulus is a rare but life-threatening condition characterized by an abnormal rotation of the stomach along its anatomical axes, potentially resulting in obstruction, ischemia, necrosis, and perforation. When gastric volvulus is complicated by perforation, the risk of mortality increases substantially, making timely diagnosis and surgical intervention imperative. Although first described in the 19th century, gastric volvulus remains a diagnostic challenge due to its variable clinical presentation and overlap with other abdominal emergencies. This column provides a comprehensive discussion of etiology, pathophysiology, epidemiology, clinical presentation, imaging findings, treatment, and prognosis of gastric volvulus with perforation, supported by the provided case material and current lite...