Non-Hodgkin lymphoma involving the skull base is a very rare tumour. The role of surgery for these patients remains controversial, as is the use of dural graft for CSF leak repair. With an increasing incidence of CNS ...Non-Hodgkin lymphoma involving the skull base is a very rare tumour. The role of surgery for these patients remains controversial, as is the use of dural graft for CSF leak repair. With an increasing incidence of CNS lymphoma, more atypical presentations are reported. It is, therefore, important to include lymphoma in the differential diagnosis of skull base lesions as long-term remission is achievable for such patients, as shown in our case. Dural graft used for CSF leak repair could present with delayed complication mimicking tumour recurrence. Relevant published literature is reviewed.展开更多
Objective:Endoscopic repair of large anterior skull base(ASB)defects has excellent results when using multilayered repairs with a nasoseptal flap.However,in extensive intranasal tumors,a nasoseptal flap may not always...Objective:Endoscopic repair of large anterior skull base(ASB)defects has excellent results when using multilayered repairs with a nasoseptal flap.However,in extensive intranasal tumors,a nasoseptal flap may not always be available.One alternative option is a flexible single-layer ASB repair.Initial studies indicate low cerebrospinal fluid leak rates with a single-layer repair.However,the level of frontal lobe support,particularly the propensity for a significant inferior displacement of the frontal lobe,is not known.The goal of this study is to determine the frontal lobe position after single-layer acellular dermal allograft repair in large ASB defects.Study Design:Retrospective cohort study.Setting:Tertiary care medical center.Subjects and Methods:This cohort study compares the frontal lobe position in adults who underwent endoscopic endonasal ASB tumor resection and single-layer cadaveric dermal matrix repair(ASB cohort)with control subjects without intracranial abnormalities(control cohort).The ASB cohort includes subjects with an ASB defect of≥5 cm anterior/posterior and≥1.5 cm wide and who had imaging at least 2 months after surgery.The frontal lobe position is measured on sagittal CT/MRI using a reference line from the base of the sella to the nasion.A value of zero indicates that the inferior-most aspect of the frontal lobe is at the level of the nasion-sellar line.A positive value indicates that the frontal lobe is inferior to the nasion-sellar line.The ASB cohort frontal lobe position is compared with the control cohort using the Mann-WhitneyU test.A priori we set an absolute difference of 5 mm as a clinically significant difference.Results:The ASB cohort includes 47 subjects who are 57%male with an average age of 60 years(range:31-89 years).The most common ASB pathology is esthesioneuroblastoma(n=21)and 81%of the ASB cohort had postoperative radiation.The control cohort includes 20 subjects who are 60%male,with a mean age of 45 years(range:19-74 years).The majority of controls underwent imaging for head trauma(n=13).The ASB mean frontal lobe position is-0.2 mm superior to the nasion-sellar line(range:-9.2 to 10.4 mm),while the control’’s mean frontal lobe position is 1.1 mm inferior to the nasion-sellar line.This difference is not statistically significant(P=0.13)and does not reach our a priori definition of clinical significance.The frontal lobe position of ASB subjects who had radiation is closer to the nasion-sellar line as compared with those who did not undergo radiation.Conclusions:Single-layer acellular dermal graft repair maintains frontal lobe support and position in large ASB defects.展开更多
背景:神经内镜经鼻蝶手术因其微创、显露充分、术后恢复快等特点,已成为前颅底中线及侧颅底占位最常用的手术方式。随着手术范围及适应证也的不断扩展,颅底磨除范围相应增加,这也使术后脑脊液漏发生率也相应增高。严重的脑脊液漏可导致...背景:神经内镜经鼻蝶手术因其微创、显露充分、术后恢复快等特点,已成为前颅底中线及侧颅底占位最常用的手术方式。随着手术范围及适应证也的不断扩展,颅底磨除范围相应增加,这也使术后脑脊液漏发生率也相应增高。严重的脑脊液漏可导致患者致命性的颅内感染及极差的预后。因此在神经内镜手术后,可靠的颅底重建是手术成功的基本条件,文章以此对颅底重建原则、方法、颅底重建应用的不同材料的生物学特性等展开综述。目的:阐述颅底重建的原则方法,总结不同重建材料的研究进展及不同生物学特性在颅底重建中的作用。方法:计算机检索万方及PubMed数据库2012年1月至2022年1月收录的文献,中文检索词为“颅底重建、神经内镜、颅底骨缺损、经鼻蝶手术入路、多重修补、带蒂黏膜瓣、聚醚醚酮、羟基磷灰石”,英文检索词为“Skull base reconstruction,Neuroendoscopy,Skull base bone defect,Transnasal-sphenoidal operative approach,Multiple repair,Pedicled mucosal flap,Polyether-ether-ketone(PEEK),Hydroxylapatite”,最终纳入60篇文献进行综述。结果与结论:(1)神经内镜经鼻蝶术后,即使颅底缺损越来越大,颅底重建的目地依旧是预防脑脊液漏避免严重并发症,目前多层修补是一致认可的修复原则。(2)骨性支撑的类骨材料诸如聚醚醚酮、羟基磷灰石因为价格昂贵且术前准备繁琐,临床应用较少;临床医生多靠类硬膜结构的生物材料及带蒂黏膜瓣完成修补,但受限于修补支撑力弱及黏膜瓣血运情况,少数病患仍有一定概率存在脑脊液漏的风险。(3)因此,术中类硬膜、类骨结构人工生物材料以及带蒂黏膜瓣修补颅底缺损符合恢复颅底的解剖修复,有助于硬膜、骨质结构的再生,这样也使疏水组织-类硬膜结构-类骨结构-黏膜的一体化生物材料研发具有广阔的应用前景。展开更多
To describe and assess the repair technique and perioperative management for cerebrospinal fluid(CSF)leak resulting from extensive anterior skull base fracture via extradural anterior skull base approach.;This was a r...To describe and assess the repair technique and perioperative management for cerebrospinal fluid(CSF)leak resulting from extensive anterior skull base fracture via extradural anterior skull base approach.;This was a retrospective review conducted at the Department of Neurosurgery of the Shanghai Tenth People's Hospital from January 2015 to April 2020.Patients with traumatic CSF rhinorrhea resulting from extensive anterior skull base fracture treated surgically via extended extradural anterior skull base approach were included in this study.The data of medical and radiological records,surgical approaches,repair techniques,peritoperative management,surgical outcome and postoperative follow-up were analyzed.Surgical repair techniques were tailored to the condition of associated injuries of the scalp,bony and dura injuries and associated intracranial lesions.Patients were followed up for the outcome of CSF leak and surgical complications.Data were presented as frequency and percent.;Thirty-five patients were included in this series.The patients'mean age was 33 years(range 11-71 years).Eight patients were treated surgically within 2 weeks;while the other 27 patients,with prolonged or recurrent CSF rhinorrhea,received the repair surgery at 17 days to 10 years after the initial trauma.The mean overall length of follow-up was 23 months(range 3-65 months).All the patients suffered from frontobasal multiple fractures.The basic repair tenet was to achieve watertight seal of the dura.The frontal pericranial flap alone was used in 20 patients,combined with temporalis muscle and/or its facia in 10 patients.Free fascia lata graft was used instead in the rest 5 patients.No CSF leak was found in all the patients at discharge.There was no surgical mortality in this series.Bilateral anosmia was the most common complication.At follow-up,no recurrent CSF leak or meningitis occurred.No patients developed mucoceles,epidural abscess or osteomyelitis.One patient ultimately required ventriculoperitoneal shunt because of progressive hydrocephalus.;Traumatic CSF rhinorrhea associated with extensive anterior skull base fractures often requires aggressive treatment via extended intracranial extradural approach.Vascularized tissue flaps are ideal grafts for cranial base reconstruction,either alone or in combination with temporalis muscle and its fascia---fascia lata sometimes can be opted as free autologous graft.The approach is usually reserved for patients with traumatic CSF rhinorrhea in complex frontobasal injuries.展开更多
Objectives: To describe the versatility of acellular fetal bovine dermal matrix as an alternative to human cadaveric allograft for head and neck reconstructive procedures in children. Study Design: Case series with ch...Objectives: To describe the versatility of acellular fetal bovine dermal matrix as an alternative to human cadaveric allograft for head and neck reconstructive procedures in children. Study Design: Case series with chart review. Methods: A database of pediatric operative procedures was queried for the use of acellular fetal bovine dermal matrix over a 16-month period. Indications for reconstruction were assessed and initial parental and surgeon satisfaction with the product were noted. Results: During the time period of 3/2012 and 7/2013 a total of 8 reconstructive procedures were performed on pediatric patients using acellular fetal bovine dermal matrix. Indications for use varied and included open and transnasal endoscopic repair of encephaloceles and soft tissue reconstructions including lateral pharyngeal wall repair, cleft palate repair, and facial recontouring operations. Acellular fetal bovine dermal matrix had a subjectively increased ease of use as compared to the surgeon’s prior experience with human cadaveric acellular dermis. Every parent vocalized a greater comfort level with the use of a bovine product over the alternative of human cadaveric tissue. The cost of acellular fetal bovine dermal matrix is slightly lower than the cost of human cadaveric acellular dermis. Conclusions: Acellular fetal bovine dermal matrix appears to be an acceptable alternative to human cadaveric acellular dermis for various forms of head and neck soft tissue reconstruction in children. Further prospective studies are warranted to assess for any differences in the long-term efficacy of this product as compared to other forms of allograft reconstruction.展开更多
文摘Non-Hodgkin lymphoma involving the skull base is a very rare tumour. The role of surgery for these patients remains controversial, as is the use of dural graft for CSF leak repair. With an increasing incidence of CNS lymphoma, more atypical presentations are reported. It is, therefore, important to include lymphoma in the differential diagnosis of skull base lesions as long-term remission is achievable for such patients, as shown in our case. Dural graft used for CSF leak repair could present with delayed complication mimicking tumour recurrence. Relevant published literature is reviewed.
文摘Objective:Endoscopic repair of large anterior skull base(ASB)defects has excellent results when using multilayered repairs with a nasoseptal flap.However,in extensive intranasal tumors,a nasoseptal flap may not always be available.One alternative option is a flexible single-layer ASB repair.Initial studies indicate low cerebrospinal fluid leak rates with a single-layer repair.However,the level of frontal lobe support,particularly the propensity for a significant inferior displacement of the frontal lobe,is not known.The goal of this study is to determine the frontal lobe position after single-layer acellular dermal allograft repair in large ASB defects.Study Design:Retrospective cohort study.Setting:Tertiary care medical center.Subjects and Methods:This cohort study compares the frontal lobe position in adults who underwent endoscopic endonasal ASB tumor resection and single-layer cadaveric dermal matrix repair(ASB cohort)with control subjects without intracranial abnormalities(control cohort).The ASB cohort includes subjects with an ASB defect of≥5 cm anterior/posterior and≥1.5 cm wide and who had imaging at least 2 months after surgery.The frontal lobe position is measured on sagittal CT/MRI using a reference line from the base of the sella to the nasion.A value of zero indicates that the inferior-most aspect of the frontal lobe is at the level of the nasion-sellar line.A positive value indicates that the frontal lobe is inferior to the nasion-sellar line.The ASB cohort frontal lobe position is compared with the control cohort using the Mann-WhitneyU test.A priori we set an absolute difference of 5 mm as a clinically significant difference.Results:The ASB cohort includes 47 subjects who are 57%male with an average age of 60 years(range:31-89 years).The most common ASB pathology is esthesioneuroblastoma(n=21)and 81%of the ASB cohort had postoperative radiation.The control cohort includes 20 subjects who are 60%male,with a mean age of 45 years(range:19-74 years).The majority of controls underwent imaging for head trauma(n=13).The ASB mean frontal lobe position is-0.2 mm superior to the nasion-sellar line(range:-9.2 to 10.4 mm),while the control’’s mean frontal lobe position is 1.1 mm inferior to the nasion-sellar line.This difference is not statistically significant(P=0.13)and does not reach our a priori definition of clinical significance.The frontal lobe position of ASB subjects who had radiation is closer to the nasion-sellar line as compared with those who did not undergo radiation.Conclusions:Single-layer acellular dermal graft repair maintains frontal lobe support and position in large ASB defects.
文摘背景:神经内镜经鼻蝶手术因其微创、显露充分、术后恢复快等特点,已成为前颅底中线及侧颅底占位最常用的手术方式。随着手术范围及适应证也的不断扩展,颅底磨除范围相应增加,这也使术后脑脊液漏发生率也相应增高。严重的脑脊液漏可导致患者致命性的颅内感染及极差的预后。因此在神经内镜手术后,可靠的颅底重建是手术成功的基本条件,文章以此对颅底重建原则、方法、颅底重建应用的不同材料的生物学特性等展开综述。目的:阐述颅底重建的原则方法,总结不同重建材料的研究进展及不同生物学特性在颅底重建中的作用。方法:计算机检索万方及PubMed数据库2012年1月至2022年1月收录的文献,中文检索词为“颅底重建、神经内镜、颅底骨缺损、经鼻蝶手术入路、多重修补、带蒂黏膜瓣、聚醚醚酮、羟基磷灰石”,英文检索词为“Skull base reconstruction,Neuroendoscopy,Skull base bone defect,Transnasal-sphenoidal operative approach,Multiple repair,Pedicled mucosal flap,Polyether-ether-ketone(PEEK),Hydroxylapatite”,最终纳入60篇文献进行综述。结果与结论:(1)神经内镜经鼻蝶术后,即使颅底缺损越来越大,颅底重建的目地依旧是预防脑脊液漏避免严重并发症,目前多层修补是一致认可的修复原则。(2)骨性支撑的类骨材料诸如聚醚醚酮、羟基磷灰石因为价格昂贵且术前准备繁琐,临床应用较少;临床医生多靠类硬膜结构的生物材料及带蒂黏膜瓣完成修补,但受限于修补支撑力弱及黏膜瓣血运情况,少数病患仍有一定概率存在脑脊液漏的风险。(3)因此,术中类硬膜、类骨结构人工生物材料以及带蒂黏膜瓣修补颅底缺损符合恢复颅底的解剖修复,有助于硬膜、骨质结构的再生,这样也使疏水组织-类硬膜结构-类骨结构-黏膜的一体化生物材料研发具有广阔的应用前景。
文摘To describe and assess the repair technique and perioperative management for cerebrospinal fluid(CSF)leak resulting from extensive anterior skull base fracture via extradural anterior skull base approach.;This was a retrospective review conducted at the Department of Neurosurgery of the Shanghai Tenth People's Hospital from January 2015 to April 2020.Patients with traumatic CSF rhinorrhea resulting from extensive anterior skull base fracture treated surgically via extended extradural anterior skull base approach were included in this study.The data of medical and radiological records,surgical approaches,repair techniques,peritoperative management,surgical outcome and postoperative follow-up were analyzed.Surgical repair techniques were tailored to the condition of associated injuries of the scalp,bony and dura injuries and associated intracranial lesions.Patients were followed up for the outcome of CSF leak and surgical complications.Data were presented as frequency and percent.;Thirty-five patients were included in this series.The patients'mean age was 33 years(range 11-71 years).Eight patients were treated surgically within 2 weeks;while the other 27 patients,with prolonged or recurrent CSF rhinorrhea,received the repair surgery at 17 days to 10 years after the initial trauma.The mean overall length of follow-up was 23 months(range 3-65 months).All the patients suffered from frontobasal multiple fractures.The basic repair tenet was to achieve watertight seal of the dura.The frontal pericranial flap alone was used in 20 patients,combined with temporalis muscle and/or its facia in 10 patients.Free fascia lata graft was used instead in the rest 5 patients.No CSF leak was found in all the patients at discharge.There was no surgical mortality in this series.Bilateral anosmia was the most common complication.At follow-up,no recurrent CSF leak or meningitis occurred.No patients developed mucoceles,epidural abscess or osteomyelitis.One patient ultimately required ventriculoperitoneal shunt because of progressive hydrocephalus.;Traumatic CSF rhinorrhea associated with extensive anterior skull base fractures often requires aggressive treatment via extended intracranial extradural approach.Vascularized tissue flaps are ideal grafts for cranial base reconstruction,either alone or in combination with temporalis muscle and its fascia---fascia lata sometimes can be opted as free autologous graft.The approach is usually reserved for patients with traumatic CSF rhinorrhea in complex frontobasal injuries.
文摘Objectives: To describe the versatility of acellular fetal bovine dermal matrix as an alternative to human cadaveric allograft for head and neck reconstructive procedures in children. Study Design: Case series with chart review. Methods: A database of pediatric operative procedures was queried for the use of acellular fetal bovine dermal matrix over a 16-month period. Indications for reconstruction were assessed and initial parental and surgeon satisfaction with the product were noted. Results: During the time period of 3/2012 and 7/2013 a total of 8 reconstructive procedures were performed on pediatric patients using acellular fetal bovine dermal matrix. Indications for use varied and included open and transnasal endoscopic repair of encephaloceles and soft tissue reconstructions including lateral pharyngeal wall repair, cleft palate repair, and facial recontouring operations. Acellular fetal bovine dermal matrix had a subjectively increased ease of use as compared to the surgeon’s prior experience with human cadaveric acellular dermis. Every parent vocalized a greater comfort level with the use of a bovine product over the alternative of human cadaveric tissue. The cost of acellular fetal bovine dermal matrix is slightly lower than the cost of human cadaveric acellular dermis. Conclusions: Acellular fetal bovine dermal matrix appears to be an acceptable alternative to human cadaveric acellular dermis for various forms of head and neck soft tissue reconstruction in children. Further prospective studies are warranted to assess for any differences in the long-term efficacy of this product as compared to other forms of allograft reconstruction.
