Bernardo Oliveria Ratilal

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Simple and complex forms of dysembryoplastic neuroepithelial tumors (DNTs) are readily recognizable but forms with diffuse growth pattern, and hybrid tumors, that is, mixed DNT and ganglioglioma (DNT/GG), are more contentious entities. Rare DNTs have shown aggressive behavior. We reviewed cortical growth patterns, immunophenotype (including CD34, nestin and(More)
Epithelioid hemangioendothelioma is a rare tumor of intermediate malignancy. Twelve intracranial cases have been well documented. We report an intra- and extra-cranial single mass epithelioid hemangioendothelioma. We describe the case of a 27-year-old male who presented a left temporal and retroauricular pain and an intra and extra-cranial mass extending to(More)
BACKGROUND Systemic antibiotics and antibiotic-impregnated shunt systems are often used to prevent shunt infection. OBJECTIVES To evaluate the effectiveness of either prophylactic systemic antibiotics or antibiotic-impregnated shunt systems for preventing infection in patients who underwent surgical introduction of intracranial ventricular shunts. (More)
BACKGROUND Basilar skull fractures (BSF) predispose patients to meningitis because of the possible direct contact of bacteria in the paranasal sinuses, nasopharynx or middle ear with the central nervous system (CNS). Cerebrospinal fluid (CSF) leakage has been associated with a greater risk of contracting meningitis. Antibiotics are often given(More)
BACKGROUND Traumatic clival epidural hematoma is an extremely rare reported entity. CASE DESCRIPTION We describe the case of a 26-year-old woman involved in a car accident who presented with a Glasgow Coma Scale score of 13, bilateral abducens palsy, bilateral numbness on the mandibular territory of the trigeminal nerve, and left hypoglossal palsy.(More)
BACKGROUND Congenital intracranial dermoid tumors are very rare. The location of these dermoid lesions in the cavernous sinus and the complexity of the operative procedure for these lesions have been noted by several authors. Dermoid tumors originating in the cavernous sinus are usually interdural, and thus blurred vision is an uncommon presentation. CASE(More)
OBJECT Systemic antibiotics and antibiotic-impregnated shunt (AIS) systems are often used to prevent shunt infection. The authors conducted a systematic review to evaluate its effectiveness of antibiotics in patients who underwent placement of intracranial ventricular shunts. METHODS The authors searched the Cochrane Central Register of Controlled Trials,(More)
The prophylactic administration of antibiotics to prevent infection and the prophylactic administration of anticonvulsants to prevent first seizure episodes are common practice in neurosurgery. If prophylactic medication therapy is not indicated, the patient not only incurs the discomfort and the inconvenience resulting from drug treatment but is also(More)
Truly global radiology would exist if patients could visit any European physician without their CDs or films. It would be possible for patients to go to a hospital or a clinic in any European country and have their examinations done in a different country, analyzed and eventually compared with the examination done at that hospital. This paper analyzes two(More)
BACKGROUND Pseudomeningocele, an extradural collection of cerebrospinal fluid (CSF), has only been rarely reported to occur spontaneously in conjunction with isthmic spondylolisthesis (with lysis) in the lumbar spine. CASE DESCRIPTION A 68-year-old male presented with low back pain and neurogenic claudication of several years duration without any history(More)