Showing 4 Abstracts.
Herein, we present a case series of children who underwent glial tumor resection with bioabsorbable plates used for craniotomy closure. On follow up MRI as part of tumor surveillance, restricted diffusion was observed in the scalp and extradural space that was initially concerning for tumor recurrence/ seeding. However, after correlation with CT, the sites of restricted diffusion corresponded closely to the sites of bioabsorable plate placement. On additional follow up imaging, the restricted diffusion resolved nearly completely in all patients. Based on literature search and histopathology, we concluded that aforementioned findings are related to delayed inflammatory reaction to the bioabsorbable plates. Read More
Meeting name: SPR 2023 Annual Meeting & Postgraduate Course , 2023
Authors: Basavalingu Deepashri, Perez Francisco
Keywords: Glioma, Diffusion, Craniotomy
Ventricular shunt failures are common with as many as 40% failing by 1 year and 70% by 10 years. Approximately 15% of these shunt failures are related to shunt disconnections. The typical presenting symptoms of shunt malfunction are nonspecific and include nausea, vomiting, and altered consciousness; therefore, imaging is critical for diagnosis. Conventional radiographs can be used to identify shunt disruption although they can have limited sensitivity. Most children with suspected shunt dysfunction will also undergo CT or MR imaging to evaluate ventricular sizes. In addition, the integrity of the shunt system within the field of view on head CT can be assessed in detail; however, subtle shunt disconnections or fractures can still be difficult to detect on multiplanar CT images. Volume rendered CT images of the shunt apparatus can be used to improve the detection of subtle shunt disruptions Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Oztek Murat Alp, Parisi Marguerite, Perez Francisco, Phillips Grace
Keywords: Ventriculoperitoneal shunt, CT, Volume rendering
Aseptic or chemical meningitis is an inflammation of the meninges without an infectious cause. It is a diagnosis of exclusion which is reached only in the appropriate clinical context after a careful search for bacterial or viral pathogens is negative. Aseptic meningitis following transsphenoidal resection of craniopharyngioma has been reported in the neurosurgical literature with an incidence of up to 3%; however, it remains unfamiliar in the radiology literature and there have been only a few case reports describing associated imaging findings. The chemical meningitis is thought to be caused by the release of craniopharyngioma fluid which contains inflammatory cholesterol crystals. Clinical and CSF findings can be identical to bacterial meningitis except for the absence of identifiable bacterial or viral pathogens. Complications can include vasospasm, stroke, and death. The purpose of this report is to describe two cases of aseptic meningitis following craniopharyngioma resection with the hope of improving awareness among pediatric radiologists. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Oztek Murat Alp, Wright Jason, Perez Francisco, Khalatbari Hedieh, Ishak Gisele
Keywords: Craniopharyngioma, Meningitis, MRI
CT with 4D cine imaging can non-invasively and dynamically characterize airways for various pathologies, such as airway caliber fluctuations in tracheobronchomalacia, intermittent compression by cardiovascular or other mediastinal structures, or constriction from anatomic anomalies like those associated with craniofacial syndromes. However, optimal interpretation of dynamic airway CT studies requires an understanding of the impact of such extrinsic factors as the presence of support apparatus (e.g., endotracheal tube, enteric tube), level of required respiratory support (e.g., positive end-expiratory pressure), and differences in positioning (e.g., with jaw thrust). We have performed more than 100 pediatric cases of dynamic airway CT under a variety of conditions, in patients who range from free-breathing to ventilator-dependent, and for a variety of pathologies. In this educational exhibit, we will consider how to balance and tailor extrinsic factors when using dynamic CT for the guidance of airway management, in order to meet diagnostic considerations and supplement other cardiopulmonary investigations, including cases with bronchoscopic and surgical correlates. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Tang Elizabeth, Menashe Sarah, Romberg Erin, Perez Francisco, Otjen Jeffrey