Primary intraosseous hemangiomas are benign, vascular malformations that account for approximately 1% of all primary bone neoplasms. These tumors are mostly found in vertebral bodies and are rarely seen in the calvarium, where they represent 0.2% of bony neoplasms. When found in the skull, they tend to present with vague symptoms and do not have the typical radiological findings suggestive of h...

Brain Injury Mechanisms of Brain Injury Hypoxia and Ischemia Excitatory Amino Acid Injury Cerebral Edema Increased Intracranial Volume and Pressure Brain Herniation Hydrocephalus Traumatic Head and Brain Injury Skull Fractures Traumatic Brain Injury Manifestations of Global Brain Injury Anatomic and Physiologic Basis of Consciousness Reticular Activating System Levels of Consciousness Other Man...

There are multiple non-neoplastic lesions that can mimic intracranial neoplasms on neuroimaging. The differentiation between neoplasms and these tumour-like lesions is essential to making the correct management decisions, not least because there is significant morbidity and mortality associated with brain biopsy and surgery. It is important for us as radiologists to be aware of these conditions...

The differential diagnosis of midline nasal masses includes inflammatory lesions, post-traumatic deformities, benign neoplasms, malignant neoplasms, congenital and vascular masses. Midline congenital lesions of the nose are rare congenital anomalies. Their incidence is estimated at 1 per 20,000 to 40,000 births consisting of gliomas, encephaloceles, and nasal dermoid sinus cysts. Nasal dermoid ...

AIM To describe the imaging features of serous neoplasms of the pancreas using ultrasound, endoscopic ultrasound, computed tomography and magnetic resonance imaging. METHODS This multicenter international collaboration enhances a literature review to date, reporting features of 287 histologically confirmed cases of serous pancreatic cystic neoplasms (SPNs). RESULTS Female predominance is se...

While pediatric orbital tumors are most often managed in tertiary care centers, clinicians should be aware of the signs of intraocular and orbital neoplasms. In the pediatric population, a delay in diagnosis of orbital and intraocular lesions, even if benign, can lead to vision loss and deformity. Intraocular lesions reviewed are retinoblastoma, medulloepithelioma, and retinal astrocytic hamart...

Electrolyte alterations and extra-renal disorders are quite frequent in patients undergoing haemodialysis or peritoneal dialysis. The native kidneys may be the site of important pathologies in patients undergoing dialysis, especially in the form of acquired renal cystic disease with frequent malignant transformation. Renal neoplasms represents an important complication of haemodialysis-associat...

When stimulated by a filterable agent of leukosis of chickens (Strain 2), endothelium may undergo seemingly unrestricted growth. These neoplasms of endothelium are usually unaccompanied by the formation of blood cells. Occasionally they produce hemocytoblasts, discharged like those of the normal marrow into vascular channels as also myelocytes about the vessels. The same agent that stimulates e...

background and objective: vascular endothelial growth factor (vegf) and its receptors (vegf-r1 and r2) are major regulators of angiogenesis. this study was designed to assess serum levels of vegf and vegf-r1 and their prognostic significance in newly diagnosed childhood acute leukemia. materials and methods: for this purpose, vegf and vegf-r1 were determined using enzyme linked immuno-sorbant a...

Diagnostic and differential diagnostic of orbital diseases are considered to be one of the most difficult problems in ophthalmology because most orbital pathologies display the same signs and symptoms. Condition of orbital tissues can be evaluated using three different radiology imaging techniques: A/B-scan ultrasonography, computed tomography, and magnetic resonance imaging. A/B-scan ultrasono...