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Objective: To analyze the clinical epidemiological characteristics including clinical features, disease prognosis of pneumococcal meningitis (PM), and drug sensitivity of S. pneumoniae isolates in Chinese children., Methods: A retrospective analysis was performed on the clinical, laboratory microbiological data of 160 hospitalized children less than 15 years of age with PM from January 2019 to December 2020 in 33 tertiary hospitals in China., Results: A total of 160 PM patients were diagnosed, including 103 males and 57 females The onset age was 15 days to 15 years old, and the median age was 1 year and 3 months. There were 137 cases (85.6%) in the 3 months to <5 years age group, especially in the 3 months to <3 years age group (109 cases, 68.2%); S. pneumoniae was isolated from cerebrospinal fluid (CSF) culture in 95(35.6%), and 57(35.6%) in blood culture. The positive rates of S. pneumoniae detection by CSF metagenomic next-generation sequencing (mNGS)and antigen detection method were 40.2% (35/87) and 26.9% (21/78). Fifty-five cases (34.4%) had one or more predisposing factors of bacterial meningitis; and 113 cases (70.6%) had one or more extracranial infection diseases Fever (147, 91.9%) was the most common clinical symptom, followed by vomiting (61, 38.1%) and altered mental status (47,29.4%). Among 160 children with PM, the main intracranial imaging complications were subdural effusion and (or) empyema in 43 cases (26.9%), hydrocephalus in 24 cases (15.0%), cerebral abscess in 23 cases (14.4%), intracranial hemorrhage in 8 cases (5.0%), and other cerebrovascular diseases in 13 cases (8.1%) including encephalomalacia, cerebral infarction, and encephalatrophy. Subdural effusion and (or) empyema and hydrocephalus mainly occurred in children < 1 years old (90.7% (39/43) and 83.3% (20/24), respectively). 17 cases with PM (39.5%) had more than one intracranial imaging abnormality. S. pneumoniae isolates were completely sensitive to vancomycin (100.0%, 75/75), linezolid (100.0%,56/56), ertapenem (6/6); highly sensitive to levofloxacin (81.5%, 22/27), moxifloxacin (14/17), rifampicin (96.2%, 25/26), and chloramphenicol (91.3%, 21/23); moderately sensitive to cefotaxime (56.1%, 23/41), meropenem (51.1%, 23/45) and ceftriaxone (63.5, 33/52); less sensitive to penicillin (19.6%, 27/138) and clindamycin (1/19); completely resistant to erythromycin (100.0%, 31/31). The cure and improvement rate were 22.5% (36/160)and 66.3% (106/160), respectively. 18 cases (11.3%) had an adverse outcome, including 6 cases withdrawing treatment therapy, 5 cases unhealed, 5 cases died, and 2 recurrences. S. pneumoniae was completely susceptible to vancomycin (100.0%, 75/75), linezolid (100.0%, 56/56), and ertapenem (6/6); susceptible to cefotaxime, meropenem, and ceftriaxone in the order of 56.1% (23/41), 51.1% (23/45), and 63.5 (33/52); completely resistant to erythromycin (100.0%, 31/31)., Conclusion: Pediatric PM is more common in children aged 3 months to < 3 years old. Intracranial complications mostly occur in children < 1 year of age with fever being the most common clinical manifestations and subdural effusion and (or) empyema and hydrocephalus being the most common complications, respectively. CSF non-culture methods can facilitate improving the detection rate of pathogenic bacteria. More than 10% of PM children had adverse outcomes. S. pneumoniae strains are susceptible to vancomycin, linezolid, ertapenem, levofloxacin, moxifloxacin, rifampicin, and chloramphenicol., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Wang, Xu, Liu, Liu, Yu, Chen, Zheng, Shu, Du, Xu, Huang, Li, Shu, Chen and The CPBMS Study Group.)

Objective: Hydrocephalus associated with subdural hygromas is a rare complication after decompression of Chiari malformation type I (CM-I). There is no consensus for management of this complication. The authors present a series of 5 pediatric patients who underwent CM-I decompression with placement of a dural graft complicated by posterior fossa hygromas and hydrocephalus that were successfully managed nonoperatively., Methods: A retrospective review over the last 5 years of patients who presented with hydrocephalus and subdural hygromas following foramen magnum decompression with placement of a dural graft for CM-I was conducted at 2 pediatric institutions. Their preoperative presentation, perioperative hospital course, and postoperative re-presentation are discussed with attention to their treatment regimen and ultimate outcome. In addition to reporting these cases, the authors discuss all similar cases found in their literature review., Results: Over the last 5 years, the authors have encountered 194 pediatric cases of CM-I decompression with duraplasty equally distributed at the 2 institutions. Of those cases, 5 pediatric patients with a delayed postoperative complication involving hydrocephalus and subdural hygromas were identified. The 5 patients were managed nonoperatively with acetazolamide and high-dose dexamethasone; dosages of both drugs were adjusted to the age and weight of each patient. All patients were symptom free at follow-up and exhibited resolution of their pathology on imaging. Thirteen similar pediatric cases and 17 adult cases were identified in the literature review. Most reported cases were treated with CSF diversion or reoperation. There were a total of 4 cases previously reported with successful nonoperative management. Of these cases, only 1 case was reported in the pediatric population., Conclusions: De novo hydrocephalus, in association with subdural hygromas following CM-I decompression, is rare. This presentation suggests that these complications after posterior fossa decompression with duraplasty can be treated with nonoperative medical management, therefore obviating the need for CSF diversion or reoperation.

Background: To examine the strength and tolerance of the fibrin glue sealant in a situation of extended transsphenoidal surgery. The withstand pressure of fibrin glue sealant was measured using a simple sellar reconstruction model., Methods: A 15-mm diameter hole at the bottom of a 51-cm high cylinder was covered with a Gore-Tex (Gore-Tex, Tokyo, Japan) sheet. A small plate was placed on the center for a brief fixation, and 3 mL of fibrin glue was applied over the entire bottom. Then water was gradually filled in five cylinders, and the water level at leakage was measured as withstand pressures at 10 minutes and 24 hours after sealant application. The stability of the sealant under pressures of 20 and 30 cm H(2)O for 12 hours was also examined., Results: The median initial withstand pressure at 10 minutes was 32 cm H(2)O (n = 5), and was significantly increased to 47.5 cm H(2)O after 24 hours (n = 4). In four of five cylinders, fibrin glue sealants were stable against a pressure of 20 cm H(2)O for 12 hours and 30 cm H(2)O for the next 12 hours., Conclusions: The withstand pressure of simple fibrin glue sealant without other biological reactions could be estimated to be more than 20 cm H(2)O after application, and increased to more than 40 cm H(2)O after 24 hours. These data are practical for neurosurgeons to comprehend the strength and limit of fibrin glue sealant and suggests the importance to control the intracranial pressure to less than 20 cm H(2)O, especially for the first 12 to 24 hours., (Copyright © 2010 Elsevier Inc. All rights reserved.)

Background: Spontaneous intracranial hypotension (SIH) is characterized by orthostatic headache, diffuse pachymeningeal enhancement on brain magnetic resonance imaging (MRI) and low cerebrospinal fluid (CSF) pressure. Treatment ranges from conservative management, such as bed rest, overhydration and caffeine, to invasive procedures, such as the autologous epidural blood patch (EBP), computed tomography (CT)-guided fibrin glue injection at the site of the leak and open surgical intervention. EBP has emerged as the treatment of choice for SIH when initial conservative measures fail to bring relief., Methods: Forty-two patients with SIH were treated with lumbar autologous EBP in Trendelenburg position preceded by pre-medication with acetazolamide., Results: A complete recovery was obtained in all patients after one (90%), two (5%) or three (5%) EBPs. After EBP, two patients (5%) also performed evacuation of bilateral chronic subdural hematoma with mass effect., Conclusions: Spontaneous intracranial hypotension can be effectively cured by lumbar autologous EBP in Trendelenburg position pre-medicated with acetazolamide.

Subdural hygroma is a frequent delayed complication of head trauma. It is a rare form of bleeding. Most hygromas are clinically silent and a few cases have shown slow deterioration in the chronic stage. We report a case of a 72-years-old male presented with a mild headache, consciousness disturbance and gait ataxia after head injury. Cranial computed tomography revealed subdural hygroma. The hygroma was associated to thrombocythemia. The patient was treated with chemotherapy with hydroxyurea with rapid resolution. In conclusion subdural hygroma may resolve spontaneously. Surgery might be deferred except in emergency conditions or in patients with normal neurological findings. Subdural hygroma in patient with thrombocythemia is first time presenting.

Postmeningitis subdural effusion is rare in neonates when compared to infants and children. For treatment, various modalities are described. Serial subdural punctures and surgical drain placement are advised for cases having a mass effect on imaging. We report a neonate with symptomatic postmeningitis subdural effusion, who failed to respond to serial subdural punctures, but subsequently managed successfully with acetazolamide. He had no recurrence further. His development was normal at 18 months of age.

Three patients with bilateral subdural effusion, an exclusive manifestation of cerebral venous sinus thrombosis (CVST), are presented. A possible explanation of this rare occurrence is provided, and the differential therapeutic strategies are discussed. We propose to consider CVST in cases of subdural effusions of obscure origin. Appropriate imaging studies should not be delayed if there is suspicion of sinus thrombosis to enable adequate therapy to be started as soon as possible., (Copyright Blackwell Munksgaard 2003)

Postoperative cerebrospinal fluid (CSF) leakage is a serious complication accompanying an anterior procedure through thoracotomy, and it is difficult to cure. In this report, we present three patients with CSF leakage in the thoracic spine complicating anterior decompression and fusion for ossification of posterior longitudinal ligament who were treated by surgical or nonsurgical methods. As a surgical method, direct closure by fixing substitute dura mater with fibrin adhesive sealant or cyanoacrylate adhesive was performed in two patients. This technique was effective but required another thoracotomy. As a nonsurgical method, intrapleural administration of OK-432 through chest drainage tubes was also effective to reduce intrapleural effusions in one patient, but with this method, care must be taken for neurotoxic reactions. Both techniques seem to be useful and effective for postoperative intrapleural CSF leakages complicating anterior procedures through thoracotomy.

An 11-year-old girl presented with headache of 3 months' duration. There was bilateral disc edema. The cerebrospinal fluid pressure was 50 cm of water with normal cerebrospinal fluid cytology and biochemistry. She developed severe headache (different and disabling), dizziness, vomiting, and backache on sitting up 6 hours after lumbar puncture, and lying supine relieved all of her symptoms. Intravenous fluids, analgesics, and complete bed rest did not relieve her symptoms over the next 72 hours. She was completely relieved of her symptoms on receiving two tablets of Caffergot containing 200 mg of caffeine and 2 mg of ergotamine 72 hours after lumbar puncture. The symptoms recurred 48 hours later, and a repeat dose of Caffergot was required. Magnetic resonance imaging (MRI) done 96 hours after lumbar puncture revealed the entire dura overlying the brain, including the posterior fossa, showing intense enhancement on contrast injection with leak at the lumbar puncture site. Oral caffeine (coffee, three times a day) was advised over 1 week. The patient remained asymptomatic, and a repeat MRI scan after 10 days showed complete clearing of the cerebrospinal fluid leak with no dural enhancement. The syndrome of cerebrospinal fluid hypovolemia following lumbar puncture is reported in a girl with idiopathic intracranial hypertension.

An 8-month-old girl had classic features of hemophagocytic lymphohistiocytosis (HLH). A presumptive diagnosis of familial hemophagocytic lymphohistiocytosis was made on the basis of her age and the presence of parental consanguinity. In view of abnormal neurologic findings at presentation, a magnetic resonance imaging scan was performed and showed bilateral proteinaceous subdural effusions. These resolved within 1 week of commencement of chemotherapy for the primary condition. These subdural effusions were the only objective documentations of central nervous system involvement, along with an increased cerebrospinal fluid protein level. We also report other radiologic findings of HLH, which are of use in strengthening this diagnosis in individuals in whom the diagnosis is strongly suspected.

A case of possible Kawasaki disease presenting with bilateral subdural collections is reported. A 6-month-old boy was admitted to hospital following a prolonged partial seizure. He showed signs of worsening encephalopathy and was treated for presumed infective meningoencephalitis. Imaging revealed bilateral subdural collections. Pyrexia and irritability continued despite appropriate antibiotic and antiviral therapy suggesting a vasculitic process. The mucocutaneous signs normally associated with Kawasaki disease were subtle and fleeting in this infant. There was a dramatic clinical response to intravenous immunoglobulin and high dose aspirin. At 2-year follow-up the boy has made a complete recovery with no echocardiographic evidence of coronary artery aneurysm and resolution of subdural collections. Kawasaki disease or other vasculitides should be considered in the differential diagnosis of acute subdural collections in infancy.

We report on the successful treatment of a case of infantile subdural fluid collection after cardiac surgery by administration of methylprednisolone acetate into the subdural cavity. The protein content in subdural fluid did not change even after administration of this steroid and was not a good indicator of the efficacy of treatment; however, the content of platelet-activating factor (PAF), an inflammatory mediator, in the fluid removed from the subdural cavity decreased rapidly after administration of the steroid. Subdural fluid collection subsequently decreased and mental retardation was improved. Our findings suggest that PAF content is a good indicator of the severity of infantile subdural fluid collection.