Intraoperative Indocyanine Green Angiography for Assessing Flap Perfusion in Skull Base Reconstruction: A Systematic Review

2021 ◽  
Author(s):  
Noah Shaikh ◽  
Daniel O'Brien ◽  
Chadi Makary ◽  
Meghan Turner
Keyword(s):  
Systematic Review ◽  
Indocyanine Green ◽  
Skull Base ◽  
Csf Leak ◽  
Cochrane Central Register ◽  
Flap Necrosis ◽  
Skull Base Reconstruction ◽  
Postoperative Mri ◽  
Postoperative Meningitis ◽  
Flap Perfusion

Abstract Objective This study was aimed to study the current use of intraoperative indocyanine green (ICG) angiography during skull base reconstruction and understand its efficacy in predicting postoperative magnetic resonance imaging (MRI) enhancement and flap. Study Design The Embase, the Cochrane Central Register of Controlled Trials (CENTRAL), Web of Science, and Google Scholar databases were searched from the date of inception until August 2020 for studies of ICG flap perfusion assessment during skull base reconstruction. The primary outcome of interest was the development of cerebrospinal fluid (CSF) leak after skull base reconstruction. Secondary outcomes of interest included postoperative meningitis, flap MRI enhancement, flap necrosis, flap perfusion measurements, and total complications. Results Search results yielded 189 studies, from which seven studies with a total of 104 patients were included in the final analysis. There were 44 nasoseptal flaps (NSF), two lateral nasal wall flaps (LNWF), 14 pericranial flaps (PCF), and 44 microvascular free flaps. The rates of CSF leak and postoperative MRI enhancement were 11 and 94%, respectively. There was one case of postoperative meningitis. Pooled analysis of the available data showed that intraoperative ICG flap perfusion was associated with flap enhancement on postoperative MRI (p = 0.008) and CSF leak (p = 0.315) by Fisher's exact test. Conclusion The available literature suggests intraoperative ICG enhancement is associated with postoperative MRI enhancement. Given the small sample sizes in the literature and the rarity of complications associated with skull base reconstruction, intraoperative ICG enhancement has not been predictive of flap necrosis or postoperative complications such as CSF leak or meningitis. Level of Evidence This study presents level 3 evidence as a systematic review of case studies, case reports, and retrospective and prospective trials with no blinding, controls, and inconsistently applied reference standards.

scholarly journals Evaluation of Intranasal Flap Perfusion by Intraoperative Indocyanine Green Fluorescence Angiography

2018 ◽  
Vol 15 (6) ◽  
pp. 672-676 ◽  
Author(s):  
Mathew Geltzeiler ◽  
Ana Carolina Igami Nakassa ◽  
Meghan Turner ◽  
Pradeep Setty ◽  
George Zenonos ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Skull Base ◽  
Near Infrared ◽  
The Body ◽  
Fluorescence Angiography ◽  
Flap Necrosis ◽  
Endonasal Surgery ◽  
Mri Contrast ◽  
Postoperative Mri ◽  
Flap Perfusion

Abstract BACKGROUND Vascularized intranasal flaps are the primary reconstructive option for endoscopic skull base defects. Flap vascularity may be compromised by injury to the pedicle or prior endonasal surgery. There is currently no validated technique for intraoperative evaluation of intranasal flap viability. OBJECTIVE To evaluate the efficacy of indocyanine green (ICG) near-infrared angiography in predicting the viability of pedicled intranasal flaps during endoscopic skull base surgery through a pilot study. METHODS ICG near-infrared fluorescence endoscopy was performed during endoscopic endonasal surgery for skull base tumors. Intraoperative and postoperative data were collected regarding enhancement of the flap body and pedicle. Fluorescence was rated qualitatively. Postoperatively, flap perfusion was evaluated via MRI-contrast enhancement in addition to clinical outcomes (cerebrospinal fluid leak and endoscopic flap appearance). RESULTS Thirty-eight patients underwent ICG fluorescence angiography. Both the body and pedicle enhanced in 20 patients (53%), while the pedicle only enhanced for 12 patients (32%), the body only for 3 (8%), and neither for 3 (8%). When both the pedicle and body enhanced with ICG, the rate of postoperative MRI contrast enhancement was 100% and the rate of flap necrosis was 0%. The sensitivity and specificity of flap pedicle ICG enhancement for predicting postoperative flap MRI enhancement were 97% and 67%, respectively. Two of 3 patients without enhancement developed flap necrosis. CONCLUSION ICG fluorescence angiography of intraoperative flap perfusion is feasible and correlates well with outcomes of postoperative MRI flap enhancement and flap necrosis. Additional study is needed to further refine the imaging technique and optimally characterize the clinical utility.

Heterogeneity in Outcome Reporting in Endoscopic Endonasal Skull Base Reconstruction: A Systematic Review

2020 ◽  
Author(s):  
Christina Dorismond ◽  
Griffin D. Santarelli ◽  
Brian D. Thorp ◽  
Adam J. Kimple ◽  
Charles S. Ebert ◽  
...  
Keyword(s):  
Systematic Review ◽  
Skull Base ◽  
Meta Analysis ◽  
Reporting Guidelines ◽  
Csf Leak ◽  
Cochrane Library ◽  
Significant Heterogeneity ◽  
Endoscopic Endonasal ◽  
Skull Base Reconstruction ◽  
History Of

Abstract Objectives Presently, there are no standards for reporting outcomes of endoscopic endonasal skull base reconstruction (ESBR). This is problematic as a lack of consistent reporting makes synthesizing findings in systematic reviews and meta-analysis challenging. Thus, the aim of this study was to systematically review and describe the patterns of reporting outcomes in ESBR as a foundation for developing reporting guidelines. Study Design Present study is a systematic review. Methods Embase, PubMed, CINAHL, Cochrane Library, and Web of Science were searched for all publications with ≥25 patients and a focus on ESBR. The reporting patterns of each study's variables and outcomes were assessed. Results A total of 112 studies were included in the review. The most commonly reported demographic variables were the number of included patients (n = 112, 100%) and types of pathologies treated (n = 104, 92.9%). Meanwhile, the most routinely described preoperative variable was history of prior treatment (n = 48, 42.9%). Type of reconstruction was a commonly reported intraoperative variable (n = 110, 98.2%), though the rate of intraoperative cerebrospinal fluid (CSF) leak was noted in only 76 studies (67.9%). With regard to postoperative outcomes, postoperative CSF leak rate was routinely provided (n = 101, 90.2%), but reporting of other surgical complications was more inconsistent. Ultimately, of the 43 variables and outcomes reviewed, a median of 12 (range: 4–22) was reported in each study. Conclusions There is significant heterogeneity in the outcomes reported in studies relating to ESBR. This highlights the need for the development of standard reporting guidelines to minimize bias and improve interstudy comparability.

scholarly journals Cerebrospinal fluid leakage due to nasoseptal flap partial necrosis: A pitfall for skull base reconstruction of endoscopic endonasal surgery

2020 ◽  
Vol 11 ◽  
pp. 121
Author(s):  
Hiroki Yamada ◽  
Masahiro Toda ◽  
Mariko Fukumura ◽  
Ryotaro Imai ◽  
Hiroyuki Ozawa ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Skull Base ◽  
Csf Leak ◽  
Cerebrospinal Fluid Leakage ◽  
Flap Necrosis ◽  
Nasoseptal Flap ◽  
Endoscopic Endonasal ◽  
Skull Base Reconstruction ◽  
Partial Necrosis ◽  
Necrotic Region

Background: Vascularized nasoseptal flaps allow for the reconstruction of large dural defects and have remarkably reduced the incidence of postoperative complications during endoscopic endonasal skull base surgery. Nevertheless, some complications related to nasoseptal flap have been reported. Flap necrosis is a rare, but serious issue is associated with meningitis and cerebrospinal fluid (CSF) leak. Case Description: We performed endoscopic endonasal removal of the tuberculum sella meningioma in a 39-year-old woman with a history of Turner syndrome using abdominal fat, fascia, and a vascularized nasoseptal flap for dural and skull base defect reconstruction. After surgery, she developed CSF leak, and reoperation revealed partial necrosis of the septal flap that caused leakage. At this time, with a concern that removal of the necrotic part may lead to the insufficient size of the flap, we filled the gap tightly with fat pieces. However, the CSF leak recurred, and thus, we performed debridement of the necrotic region and reformed the multilayered reconstruction, following which she no longer experienced CSF leakage. Conclusion: Our case suggested that partial rather than total flap necrosis could occur, possibly due to variances of vascular anatomy, leading to focal ischemia. Debridement of the necrotic region may be an important solution for recurrent cerebrospinal leakage secondary to partial necrosis of a nasoseptal flap.

scholarly journals Pediatric Pituitary Adenoma: Case Series, Review of the Literature, and a Skull Base Treatment Paradigm

2018 ◽  
Vol 79 (01) ◽  
pp. 091-114 ◽  
Author(s):  
Avital Perry ◽  
Christopher Graffeo ◽  
Christopher Marcellino ◽  
Bruce Pollock ◽  
Nicholas Wetjen ◽  
...  
Keyword(s):  
Systematic Review ◽  
Pituitary Adenoma ◽  
Skull Base ◽  
Pituitary Adenomas ◽  
Pediatric Population ◽  
Csf Leak ◽  
Persistent Disease ◽  
Treatment Paradigm ◽  
Surgical Cure

Background Pediatric pituitary adenoma is a rare skull base neoplasm, accounting for 3% of all intracranial neoplasms in children and 5% of pituitary adenomas. Compared with pituitary tumors in adults, secreting tumors predominate and longer disease trajectories are expected due to the patient age resulting in a natural history and treatment paradigm that is complex and controversial. Objectives The aims of this study were to describe a large, single-institution series of pediatric pituitary adenomas with extensive long-term follow-up and to conduct a systematic review examining outcomes after pituitary adenoma surgery in the pediatric population. Methods The study cohort was compiled by searching institutional pathology and operative reports using diagnosis and site codes for pituitary and sellar pathology, from 1956 to 2016. Systematic review of the English language literature since 1970 was conducted using PubMed, MEDLINE, Embase, and Google Scholar. Results Thirty-nine surgically managed pediatric pituitary adenomas were identified, including 15 prolactinomas, 14 corticotrophs, 7 somatotrophs, and 4 non-secreting adenomas. All patients underwent transsphenoidal resection (TSR) as the initial surgical treatment. Surgical cure was achieved in 18 (46%); 21 experienced recurrent/persistent disease, with secondary treatments including repeat surgery in 10, radiation in 14, adjuvant pharmacotherapy in 11, and bilateral adrenalectomy in 3. At the last follow-up (median 87 months, range 3–581), nine remained with recurrent/persistent disease (23%).Thirty-seven publications reporting surgical series of pediatric pituitary adenomas were included, containing 1,284 patients. Adrenocorticotropic hormone (ACTH)-secreting tumors were most prevalent (43%), followed by prolactin (PRL)-secreting (37%), growth hormone (GH)-secreting (12%), and nonsecreting (7%). Surgical cure was reported in 65%. Complications included pituitary insufficiency (23%), permanent visual dysfunction (6%), chronic diabetes insipidus (DI) (3%), and postoperative cerebrospinal fluid (CSF) leak (4%). Mean follow-up was 63 months (range 0–240), with recurrent/persistent disease reported in 18% at the time of last follow-up. Conclusion Pediatric pituitary adenomas are diverse and challenging tumors with complexities far beyond those encountered in the management of routine adult pituitary disease, including nuanced decision-making, a technically demanding operative environment, high propensity for recurrence, and the potentially serious consequences of hypopituitarism with respect to fertility and growth potential in a pediatric population. Optimal treatment requires a high degree of individualization, and patients are most likely to benefit from consolidated, multidisciplinary care in highly experienced centers.

scholarly journals Evolution of the graded repair of CSF leaks and skull base defects in endonasal endoscopic tumor surgery: trends in repair failure and meningitis rates in 509 patients

2019 ◽  
Vol 130 (3) ◽  
pp. 861-875 ◽  
Author(s):  
Andrew Conger ◽  
Fan Zhao ◽  
Xiaowen Wang ◽  
Amalia Eisenberg ◽  
Chester Griffiths ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Skull Base ◽  
Middle Turbinate ◽  
Csf Leak ◽  
Skull Base Tumor ◽  
Tumor Surgery ◽  
Contributing Factors ◽  
Skull Base Reconstruction ◽  
Grade 3 ◽  
Csf Leaks

OBJECTIVEThe authors previously described a graded approach to skull base repair following endonasal microscopic or endoscope-assisted tumor surgery. In this paper they review their experience with skull base reconstruction in the endoscopic era.METHODSA retrospective review of a single-institution endonasal endoscopic patient database (April 2010–April 2017) was undertaken. Intraoperative CSF leaks were graded based on size (grade 0 [no leak], 1, 2, or 3), and repair technique was documented across grades. The series was divided into 2 epochs based on implementation of a strict perioperative antibiotic protocol and more liberal use of permanent and/or temporary buttresses; repair failure rates and postoperative meningitis rates were assessed for the 2 epochs and compared.RESULTSIn total, 551 operations were performed in 509 patients for parasellar pathology, including pituitary adenoma (66%), Rathke’s cleft cyst (7%), meningioma (6%), craniopharyngioma (4%), and other (17%). Extended approaches were used in 41% of cases. There were 9 postoperative CSF leaks (1.6%) and 6 cases of meningitis (1.1%). Postoperative leak rates for all 551 operations by grade 0, 1, 2, and 3 were 0%, 1.9%, 3.1%, and 4.8%, respectively. Fat grafts were used in 33%, 84%, 97%, and 100% of grade 0, 1, 2, and 3 leaks, respectively. Pedicled mucosal flaps (78 total) were used in 2.6% of grade 0–2 leaks (combined) and 79.5% of grade 3 leaks (60 nasoseptal and 6 middle turbinate flaps). Nasoseptal flap usage was highest for craniopharyngioma operations (80%) and lowest for pituitary adenoma operations (2%). Two (3%) nasoseptal flaps failed. Contributing factors for the 9 repair failures were BMI ≥ 30 (7/9), lack of buttress (4/9), grade 3 leak (4/9), and postoperative vomiting (4/9). Comparison of the epochs showed that grade 1–3 repair failures decreased from 6/143 (4.1%) to 3/141 (2.1%) and grade 1–3 meningitis rates decreased from 5 (3.5%) to 1 (0.7%) (p = 0.08). Prophylactic lumbar CSF drainage was used in only 4 cases (< 1%), was associated with a higher meningitis rate in grades 1–3 (25% vs 2%), and was discontinued in 2012. Comparison of the 2 epochs showed increase buttress use in the second, with use of a permanent buttress in grade 1 and 3 leaks increasing from 13% to 55% and 32% to 76%, respectively (p < 0.001), and use of autologous septal/keel bone as a permanent buttress in grade 1, 2, and 3 leaks increasing from 15% to 51% (p < 0.001).CONCLUSIONSA graded approach to skull base repair after endonasal surgery remains valid in the endoscopic era. However, the technique has evolved significantly, with further reduction of postoperative CSF leak rates. These data suggest that buttresses are beneficial for repair of most grade 1 and 2 leaks and all grade 3 leaks. Similarly, pedicled flaps appear advantageous for grade 3 leaks, while CSF diversion may be unnecessary and a risk factor for meningitis. High BMI should prompt an aggressive multilayered repair strategy. Achieving repair failure and meningitis rates lower than 1% is a reasonable goal in endoscopic skull base tumor surgery.

Outcomes In Pediatric Endoscopic Skull Base Surgery: A Systematic Review

2021 ◽  
Author(s):  
Erin Mamuyac Lopez ◽  
Zainab Farzal ◽  
Kelly Marie Dean ◽  
Craig Miller ◽  
Justin Cates Morse ◽  
...  
Keyword(s):  
Systematic Review ◽  
Skull Base ◽  
Pediatric Patients ◽  
Skull Base Surgery ◽  
Tertiary Care ◽  
Case Series ◽  
Csf Leak ◽  
Inclusion Criteria ◽  
Endoscopic Skull Base Surgery ◽  
Tertiary Care Medical Center

Objectives: The frequency of endoscopic skull base surgery in pediatric patients is increasing. This study’s aim is to systematically review the literature for endoscopic skull base surgery outcomes in children/adolescents ages 0-18 years. Design: A systematic review of the literature was performed in PubMed and SCOPUS databases querying studies from 2000-2020 using PRISMA guidelines. Final inclusion criteria included: case series with 10+ patients with pediatric patients age ≤18 years, endoscopic or endoscopic-assisted skull base surgery, and outcomes reported. Setting: Tertiary care medical center Participants: Children/adolescents ages 0-18 years who underwent endoscopic skull base surgery Main Outcome Measures: Patient demographics, pathology, reconstructive technique, intra-operative findings, intra-operative and post-operative surgical complications. Results: Systematic literature search yielded 287 publications. Of these, 12 studies discussing a total of 399 patients age 0-18 years met inclusion criteria for final analysis. 7 of 12 studies discussed a single pathology. The most common pathology was a skull base defect causing CSF leak. The majority of skull base repairs were made with free tissue grafts. The most common post-operative complication was CSF leak (n=40). Twelve cases of meningitis occurred post-operatively with two of these episodes resulting in death. Conclusions: Endoscopic skull base surgery has been performed recently in the pediatric population in a variety of disease states. Inconsistent individual-level data and reporting standards are present in existing studies posing challenges for comparative analysis. Standardized reporting will aid future reviews and meta-analysis for rare skull base pathology.

scholarly journals Endoscopic Endonasal Reconstruction of High-Flow Cerebrospinal Fluid Leak with Fascia Lata “Button” Graft and Nasoseptal Flap: Surgical Technique and Case Series

2019 ◽  
Vol 81 (06) ◽  
pp. 645-650
Author(s):  
Roshni V. Khatiwala ◽  
Karthik S. Shastri ◽  
Maria Peris-Celda ◽  
Tyler Kenning ◽  
Carlos D. Pinheiro-Neto
Keyword(s):  
Cerebrospinal Fluid ◽  
Skull Base ◽  
Fascia Lata ◽  
High Flow ◽  
Csf Leak ◽  
Nasoseptal Flap ◽  
Endoscopic Endonasal ◽  
Skull Base Reconstruction ◽  
Csf Diversion ◽  
Csf Leaks

Abstract Background The endoscopic endonasal approach (EEA) has become increasingly used for resection of skull base tumors in the sellar and suprasellar regions. A nasoseptal flap (NSF) is routinely used for anterior skull base reconstruction; however, there are numerous additional allografts and autografts being used in conjunction with the NSF. The role of perioperative cerebrospinal fluid (CSF) diversion is also unclear. Objective This study was aimed to analyze success of high-flow CSF leak repair during EEA procedures without use of CSF diversion through lumbar drainage. Methods A retrospective chart review of patients who had intraoperative high-flow CSF leak during EEA procedures at our institution between January 2013 and December 2017 was performed. CSF leaks were repaired with use of a fascia lata button graft and nasoseptal flap, without use of perioperative lumbar drains. Results A total of 38 patients were identified (10 male, 28 female). Patient BMIs ranged from 19.7 to 49 kg/m2 (median = 31 kg/m2), with 18 patients meeting criteria for obesity (BMI > 30 kg/m2) and 12 patients overweight (25 kg/m2 < BMI < 29.9 kg/m2). There was no incidence of postoperative CSF leak. Conclusion In our experience, the nasoseptal flap used in conjunction with the fascia lata button graft is a safe, effective and robust combination for cranial base reconstruction with high-flow intraoperative CSF leaks, without need for lumbar drains.

How should indocyanine green dye angiography be assessed to best predict mastectomy skin flap necrosis? A systematic review

2020 ◽  
Vol 73 (6) ◽  
pp. 1031-1042 ◽  
Author(s):  
Caroline Driessen ◽  
Tinna Harper Arnardottir ◽  
Andres Rodriguez Lorenzo ◽  
Maria Rydevik Mani
Keyword(s):  
Systematic Review ◽  
Indocyanine Green ◽  
Skin Flap ◽  
Flap Necrosis ◽  
Indocyanine Green Dye ◽  
Skin Flap Necrosis

scholarly journals Stepwise Algorithm for Skull Base Reconstruction in Endoscopic Endonasal Surgery: From the Simple to the Complex

Neurosurgery ◽  
2019 ◽  
Vol 66 (Supplement_1) ◽  
Author(s):  
Maria Belen Vega ◽  
Philippe Lavigne ◽  
Vanessa Hernandez-Hernandez ◽  
Aldo Eguiluz-Menendez ◽  
Eric Wang ◽  
...  
Keyword(s):  
Skull Base ◽  
Posterior Fossa ◽  
Free Flaps ◽  
Fat Graft ◽  
Csf Leak ◽  
Endoscopic Endonasal Surgery ◽  
Endonasal Surgery ◽  
Endoscopic Endonasal ◽  
Skull Base Reconstruction ◽  
Skull Base Defects

Abstract INTRODUCTION The most frequent complication of endoscopic endonasal surgery (EES) is postoperative cerebrospinal fluid (CSF) leak. This study was designed to develop a step-wise algorithm for EES reconstruction across the spectrum of skull base defects: from free mucosal graft for uncomplicated pituitary adenomas to free flaps in complex cases with recurrent leaks. METHODS All patients with skull base pathologies who underwent EES between January 2017 and December 2018 were included and retrospectively analyzed. Tumor location, reconstruction method and postoperative CSF leak were reviewed and a step-wise algorithm based on size and location of defect was developed. RESULTS Location of skull base defects was categorized as follows: anterior fossa, suprasellar, sellar and posterior fossa. For all nonsellar sites, we performed a multilayer (collagen matrix + /- fascia lata + /− fat graft + vascularized flap) reconstruction. The nasoseptal flap (NSF) was the first choice for vascularized reconstruction when available. For all sellar lesions we employed a free mucosal graft unless a high-flow CSF leak was present, in which case a single-layer reconstruction with NSF was performed. When the NSF was not available, alternative local (lateral nasal wall flap) and regional (extracranial pericranial flap) pedicled flaps were successful choices. When patients failed multiple attempts at repair, regional or microvascular free flaps were options. Lumbar spinal drainage was employed for large anterior and posterior fossa defects and during secondary repair of postoperative CSF leaks. Of 347 patients, 4.6% had a postoperative CSF leak. Of 158 patients with an intraoperative leak (45.5%), 10.1% developed a postoperative CSF leak: 7.8% for sellar/suprasellar defects and 13% for anterior/posterior fossa defects. CONCLUSION This algorithm provides a standardized, stepwise approach to the reconstruction of all skull base defects after EES based on location.

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