Publications by authors named "Antonio R Bellas"
Introduction: Teratoma is the most common congenital tumor, but the orbital location is rare. It is composed of tissues from ectoderm, mesoderm, and endoderm.
Clinical Presentation: Congenital orbital teratoma commonly presents as unilateral proptosis, with rapid growth, leading to exposure keratopathy.
Historical Clinical Outcomes of Children with Myelomeningocele Meeting the Criteria for Fetal Surgery: A Retrospective Cohort Survey of Brazilian Patients.
Rev Bras Ginecol Obstet
March 2022
Objective: To analyze the historical clinical outcomes of children with myelomeningocele (MMC) meeting the criteria for fetal surgery, but who underwent postnatal primary repair.
Methods: Data from children undergoing postnatal MMC repair between January 1995 and January 2015 were collected from the Neurosurgery Outpatient Clinic's medical records. Children were included if they had ≥ 1 year of postoperative follow-up and met the criteria for fetal surgery.
Introduction: The surgical treatment of Chiari type 1 (CM1) malformation is controversial and depends largely on the preference of the surgeon. The evolution of neuroimaging resulted in an increased number of asymptomatic patients incidentally diagnosed.
Purpose: To study retrospectively a population of 24 symptomatic patients with CM1 operated between 1999 and 2017 in which intraoperative ultrasonography (IOUS)-assisted posterior fossa-C1 decompression was used to decide whether the dura mater should be opened (CVD+) or not (CVD).
Introduction: Pott's puffy tumor (PPT) is rare and usually seen as a complication of frontal sinusitis resulting in subperiosteal abscess of the frontal bone with underlying osteomyelitis. PPT is potentially severe and can lead to life-threatening intracranial complications.
Patients And Methods: The authors present a series of six pediatric patients diagnosed with PPT and intracranial complications between 1999 and 2012.
Unlabelled: Multiple shunt failure is a challenge in pediatric neurosurgery practice and one of the most feared complications of hydrocephalus.
Objective: To demonstrate that laparoscopic procedures for distal ventriculoperitoneal shunt failure may be an effective option for patients who underwent multiple revisions due to repetitive manipulation of the peritoneal cavity, abdominal pseudocyst, peritonitis or other situations leading to a "non reliable" peritoneum.
Method: From March 2012 to February 2013, the authors reviewed retrospectively the charts of six patients born and followed up at our institution, which presented with previous intra-peritoneal complications and underwent ventriculoperitoneal shunt revision assisted by video laparoscopy.
Myxopapillary ependymomas are almost exclusively seen at the conus medullaris/filum terminale/cauda equina region, usually as solitary space-occupying lesions. The authors report the case of a 14-year-old boy with double concomitant myxopapillary ependymoma, proximal and caudal on the filum terminale in which a totally gross removal was achieved in two stages. This presentation is rare and, so far, we have known just three similar cases that were previously reported in children.
View Article and Find Full Text PDFBackground: Cystic dysraphic lesions of the cervical and upper thoracic region are rare and only a few series have been published about the topic. These malformations can be divided into categories that include both myelocystoceles and the so-called cervical meningoceles or myelomeningoceles.
Methods: A retrospective study of 18 patients was conducted.
Introduction: An unusual case of positive immunological testing for cysticercosis in the cystic fluid obtained from an anaplastic oligoastrocytoma is presented.
Case Report: A 15-year-old boy was admitted with multiple brain lesions. The biggest was a cyst with a mural node and neurocysticercosis was suspected.