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Sarkar S, Corrales CE, Laws ER, Smith TR. Intrasellar Arachnoid Diverticulae as a Risk Factor for Intraoperative Cerebrospinal Fluid Leakage in Patients Undergoing Endoscopic Transsphenoidal Surgery. Oper Neurosurg (Hagerstown) 2024; 27:180-186. [PMID: 38329346 DOI: 10.1227/ons.0000000000001079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/19/2023] [Indexed: 02/09/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Intrasellar arachnoid diverticulae can often be identified on preoperative imaging in patients undergoing endoscopic transsphenoidal surgery. The objective of this study was to characterize arachnoid diverticulae both qualitatively and quantitatively in a large institutional cohort of patients with pituitary tumors and to evaluate its association with intraoperative cerebrospinal fluid (CSF) leak. METHODS Preoperative imaging studies of 530 patients who underwent primary endoscopic transsphenoidal resection of pituitary tumors were examined both quantitatively and qualitatively for the presence of an intrasellar arachnoid diverticulum. A matched cohort analysis was performed to compare patients with a "significant" (>50% sellar depth) diverticulum with those with nonsignificant/no diverticulum. Morphologically, diverticulae were separately classified as Type 1 (ventral CSF cleft with no tumor/gland tissue between sellar face and infundibulum) or Type 2 (central CSF cleft with tumor/gland tissue between sellar face and infundibulum). RESULTS Arachnoid diverticulae were noted in 40.2% of cases, and diverticulum depth was linearly correlated with tumor size and body mass index. A significant diverticulum was identified in 66 cases (12.5%) and was significantly associated with the functional tumor subtype ( P = .005) and intraoperative CSF leak ( P < .001). Type 1 clefts were associated with nonfunctional pathology ( P = .034) and the presence of suprasellar extension ( P = .035) and tended to be deeper than Type 2 clefts ( P < .001), with a higher incidence of intraoperative CSF leak ( P = .093). On logistic regression analysis, only the presence of a significant diverticulum was independently associated with intraoperative CSF leak (odds ratio 4.545; 95% CI 2.418-8.544; P < .001). CONCLUSION The presence of an intrasellar arachnoid diverticulum should alert the surgeon to an elevated risk of intraoperative CSF leak during transsphenoidal surgery for pituitary tumors. A relatively limited surgical exposure tailored to the craniocaudal extent of the sellar pathology should be considered in these patients.
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Affiliation(s)
- Sauradeep Sarkar
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston , Massachusetts , USA
- Computatonal Neuroscience Outcomes Center, Harvard Medical School, Boston , Massachusetts , USA
| | - C Eduardo Corrales
- Department of Otolaryngology, Head and Neck Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston , Massachusetts , USA
| | - Edward R Laws
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston , Massachusetts , USA
| | - Timothy R Smith
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston , Massachusetts , USA
- Computatonal Neuroscience Outcomes Center, Harvard Medical School, Boston , Massachusetts , USA
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Chavez-Herrera VR, Desai R, Gel G, Nilchian P, Schwartz TH. Endonasal endoscopic surgery for pituitary adenomas. Clin Neurol Neurosurg 2024; 237:108172. [PMID: 38359520 DOI: 10.1016/j.clineuro.2024.108172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/22/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
Pituitary adenomas are slow-growing, benign intracranial tumors that can be characterized as functional (hormone-producing) or non-functional (non-hormone producing). Symptoms therefore arise from either endocrinologic abnormalities or mass effect on surrounding structures resulting in symptoms such as visual impairment and headache. In the last two decades, technical innovations have shifted surgical resection of such adenomas to endoscopic endonasal approaches. In this review, we describe the evolving approach to pituitary adenomas in the modern endoscopic era, including preoperative multidisciplinary review, relevant surgical anatomy, and a description of the technical nuances of standard and expanded approaches to the anterior skull base.
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Affiliation(s)
- Victor Ramzes Chavez-Herrera
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA
| | - Rupen Desai
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA
| | - Gülce Gel
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA
| | - Parsa Nilchian
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA
| | - Theodore H Schwartz
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA.
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Acitores Cancela A, Rodríguez Berrocal V, Pian Arias H, Díez JJ, Iglesias P. Effect of pituitary adenoma consistency on surgical outcomes in patients undergoing endonasal endoscopic transsphenoidal surgery. Endocrine 2022; 78:559-569. [PMID: 35962896 DOI: 10.1007/s12020-022-03161-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 07/29/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Most pituitary adenomas (PAs) are considered to have a soft tumor consistency. However, there is a non-negligible percentage (5-13%) of tumors presenting or exhibiting a fibrous consistency that would entail a more difficult and complicated surgical excision with higher surgical morbidity and mortality rates. PURPOSE To analyze the clinical consequences of PA tumor consistency on the surgical outcomes in patients undergoing endonasal endoscopic transsphenoidal (EET) pituitary surgery. METHODS An ambispective study of patients with PAs operated on through an EET approach in two Spanish tertiary hospitals over the last 12 years. A total of 226 consecutive interventions were carried out in the Neurosurgery Departments of the Hospital Universitario Ramón y Cajal (HURC) and the Hospital Universitario Puerta del Sur by the same neurosurgeon. PAs were grouped into soft (n = 150) and fibrous (n = 76). All patients underwent hormonal and magnetic resonance imaging (MRI) studies before and after surgery. In addition, neurosurgical complications were recorded in each patient. RESULTS Fibrous adenomas were independently associated with lower resection rates compared to soft adenomas (fibrous gross total resection [GTR] rate 48.7% vs. 76.3%, p < 0.001), even in those adenomas without invasion of the cavernous sinus (Knosp grades 0, I, and II). There were more intraoperative cerebrospinal fluid (CSF) leaks in patients with fibrous PAs. Moreover, fibrous PAs showed higher rates of postoperative hypopituitarism, permanent diabetes insipidus (DI) and postoperative treatments (hormonal treatment and radiotherapy). The excision of a fibrous PA required a longer surgical time (22.5 min more than soft PAs, p = 0.014), regardless of other factors. CONCLUSION The consistency of the PAs significantly conditions both the results of surgery (lower resections rates), complications (higher incidence of postoperative hypopituitarism, permanent DI), and the prognosis (higher incidence of postoperative treatments) of the patient undergoing EET.
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Affiliation(s)
- A Acitores Cancela
- Department of Neurosurgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
| | - V Rodríguez Berrocal
- Department of Neurosurgery, Hospital Universitario Ramón y Cajal, Madrid, Spain
- Department of Neurosurgery, Hospital Universitario Puerta del Sur, Madrid, Spain
| | - H Pian Arias
- Department of Pathology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J J Díez
- Department of Endocrinology, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - P Iglesias
- Department of Endocrinology, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
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Xiong Y, Liu Y, Xin G, Xie S, Luo H, Xiao L, Wu X, Hong T, Tang B. Exploration of the causes of cerebrospinal fluid leakage after endoscopic endonasal surgery for sellar and suprasellar lesions and analysis of risk factors. Front Surg 2022; 9:981669. [PMID: 36189390 PMCID: PMC9516539 DOI: 10.3389/fsurg.2022.981669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/22/2022] [Indexed: 11/30/2022] Open
Abstract
Objective Postoperative cerebrospinal fluid (CSF) leakage following endoscopic endonasal surgery (EES) is a frequent complication. This study aims to identify potential risk factors of postoperative CSF leakage. Methods A retrospective review of 360 patients who underwent EES was included. The associations between postoperative CSF leakage and patient demographics, medical history, tumor characteristics, and intraoperative repair techniques were analyzed; the diagnosis and repair of postoperative CSF leakage were also introduced. Results Postoperative CSF leakage occurred in 14 patients (3.9%), 2 of them cured by lumbar cistern drainage, 12 underwent endoscopic repair. Among these 12 cases, 3 were repaired twice, and the rest were cured the first time. During the repair surgery, insufficient embedded fat was detected in one case detected, seven with breached inner artificial dura, three had vascularized pedicle nasoseptal flap (VP-NSF) displacement, two with VP-NSF perforation, two with VP-NSF inactivation, and one with imperfect adherence to VP-NSF to the skull base. Eight cases had intracranial infections. Excluding one case who died of severe intracranial infection, the rest were cured and discharged without obvious sequelae. Multivariate analysis revealed that the suprasellar lesion, subarachnoid invasion, and intraoperative grade 3 flow CSF leakage were the risk factors of CSF leakage after operation, while the bone flap was a protective factor. Conclusion Bone flap combined with VP-NSF and iodoform gauze for skull base reconstruction is recommended in high-risk patients, while postoperative lumbar cistern drain remains dispensable.
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Affiliation(s)
- Yicheng Xiong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yajing Liu
- Operating Theater, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Guo Xin
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shenhao Xie
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hai Luo
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liming Xiao
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiao Wu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Tao Hong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bin Tang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Correspondence: Bin Tang
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Villalonga JF, Solari D, Cuocolo R, De Lucia V, Ugga L, Gragnaniello C, Pailler JI, Cervio A, Campero A, Cavallo LM, Cappabianca P. Clinical application of the “sellar barrier’s concept” for predicting intraoperative CSF leak in endoscopic endonasal surgery for pituitary adenomas with a machine learning analysis. Front Surg 2022; 9:934721. [PMID: 36157423 PMCID: PMC9492953 DOI: 10.3389/fsurg.2022.934721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Background Recently, it was defined that the sellar barrier entity could be identified as a predictor of cerebrospinal fluid (CSF) intraoperative leakage. The aim of this study is to validate the application of the sellar barrier concept for predicting intraoperative CSF leak in endoscopic endonasal surgery for pituitary adenomas with a machine learning approach. Methods We conducted a prospective cohort study, from June 2019 to September 2020: data from 155 patients with pituitary subdiaphragmatic adenoma operated through endoscopic approach at the Division of Neurosurgery, Università degli Studi di Napoli “Federico II,” were included. Preoperative magnetic resonance images (MRI) and intraoperative findings were analyzed. After processing patient data, the experiment was conducted as a novelty detection problem, splitting outliers (i.e., patients with intraoperative fistula, n = 11/155) and inliers into separate datasets, the latter further separated into training (n = 115/144) and inlier test (n = 29/144) datasets. The machine learning analysis was performed using different novelty detection algorithms [isolation forest, local outlier factor, one-class support vector machine (oSVM)], whose performance was assessed separately and as an ensemble on the inlier and outlier test sets. Results According to the type of sellar barrier, patients were classified into two groups, i.e., strong and weak barrier; a third category of mixed barrier was defined when a case was neither weak nor strong. Significant differences between the three datasets were found for Knosp classification score (p = 0.0015), MRI barrier: strong (p = 1.405 × 10−6), MRI barrier: weak (p = 4.487 × 10−8), intraoperative barrier: strong (p = 2.788 × 10−7), and intraoperative barrier: weak (p = 2.191 × 10−10). We recorded 11 cases of intraoperative leakage that occurred in the majority of patients presenting a weak sellar barrier (p = 4.487 × 10−8) at preoperative MRI. Accuracy, sensitivity, and specificity for outlier detection were 0.70, 0.64, and 0.72 for IF; 0.85, 0.45, and 1.00 for LOF; 0.83, 0.64, and 0.90 for oSVM; and 0.83, 0.55, and 0.93 for the ensemble, respectively. Conclusions There is a true correlation between the type of sellar barrier at MRI and its in vivo features as observed during endoscopic endonasal surgery. The novelty detection models highlighted differences between patients who developed an intraoperative CSF leak and those who did not.
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Affiliation(s)
- J. F. Villalonga
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
- LINT, Facultad de Medicina, Universidad Nacional de Tucumán, Tucumán, Argentina
- Correspondence: J. F. Villalonga
| | - D. Solari
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
| | - R. Cuocolo
- Department of Advanced Biomedical Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
| | - V. De Lucia
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
| | - L. Ugga
- Department of Advanced Biomedical Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
| | - C. Gragnaniello
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
- Department of Neurological Surgery, Swedish Neuroscience Institute, Seattle, WA, United States
| | - J. I. Pailler
- LINT, Facultad de Medicina, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - A. Cervio
- Departamento de Neurocirugía, FLENI, Buenos Aires, Argentina
| | - A. Campero
- LINT, Facultad de Medicina, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - L. M. Cavallo
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
| | - P. Cappabianca
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Universita’ degli Studi di Napoli Federico II, Naples, Italy
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Factors Influencing Cerebrospinal Fluid Leaking following Pituitary Adenoma Transsphenoidal Surgery: A Meta-Analysis and Comprehensive Review. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5213744. [PMID: 36017392 PMCID: PMC9398767 DOI: 10.1155/2022/5213744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 11/18/2022]
Abstract
Background Surgical resection is the main method to treat pituitary adenoma. Cerebrospinal fluid leakage (CSF Leak) is the main complication after transsphenoidal surgery. The impact of postoperative CSF Leak can be predicted in advance, and preventive measures can be taken in time. Clinically, a variety of factors may affect the occurrence of postoperative CSF Leak. In this study, meta-analysis was used to investigate the risk factors of postoperative CSF Leak as a clinical reference. Methods The databases PubMed, Medline, Embrase, Cochrane library, CNKI, and CBM were searched for all studies on the risk factors of postoperative CSF Leak. Studies were screened and finally included. The quality of the included studies was assessed by the Newcastle-Ottawa scale. We used Revman 5.4 software to conduct the pooled effect size of every potential statistically significant factor. Results 13 articles with a total of 5967 patients with pituitary adenoma and 405 cases of postoperative CSF Leak were finally included, accounting for 6.79%. All of the 13 articles had a quality score > 5, indicating good quality. Meta-analysis showed that patient age (OR = 0.71, 95% CI (0.41, 1.20), P = 0.20) was not a factor influencing postoperative CSF Leak, while BMI (MD = 2.26, 95% CI (1.31, 3.20), P < 0.00001), tumor size (MD = 1.35, 95% CI (0.22, 2.49), P = 0.02), whether a second operation was performed (OR = 2.20, 95% CI (1.45, 3.33), P = 0.0002), and intraoperative CSF Leak (OR = 8.88, 95% CI (3.64, 21.69), P < 0.00001) were risk factors for postoperative CSF Leak in patients. Discussion. BMI, tumor size, reoperation, and intraoperative CSF Leak are the risk factors of postoperative CSF Leak. However, not all the factors were covered in this study, it is still worth continuing to deeply investigate in this topic.
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The sellar barrier and intraoperative CSF leak in elderly patients. J Clin Neurosci 2020; 73:48-50. [PMID: 32070673 DOI: 10.1016/j.jocn.2020.01.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/19/2019] [Accepted: 01/26/2020] [Indexed: 12/30/2022]
Abstract
Cerebral spinal fluid (CSF) leak is a significant complication in pituitary surgery, increasing both patient morbidity and mortality. In a recent publication, Campero et al. observed worse postoperative prognosis and increased risk of intraoperative CSF leak in patients with reduced sellar barrier thickness. The objective of this study was to analyze the association between sellar barrier thickness and intraoperative CSF leak in older individuals. A retrospective review was conducted of 44 transsphenoidal surgery resections for pituitary adenomas, 24 microscopic and 20 purely endoscopic procedures. Presence of intraoperative CSF fistula was significantly greater in patients with weak sellar barrier (thickness under 1 mm), compared to strong sellar barrier (52.94% vs 3.70% p < 0.0001, respectively). Application of this novel concept may help improve surgical technique selection as well as predict risk of intraoperative CSF leak and need for eventual use of flaps for reconstruction.
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Villalonga JF, Fuchssteiner C, Solari D, Campero A, Cavallo LM, Cappabianca P, Hirtler L. Endoscopic anatomy of the sellar barrier: From the anatomical model to the operating room. Clin Anat 2020; 33:468-474. [PMID: 31943393 DOI: 10.1002/ca.23566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/18/2019] [Accepted: 01/11/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND The sellar barrier concept reflects the association between the components of the roof of the pituitary fossa and the risk of intraoperative cerebrospinal fluid (CSF) leak in the surgery of pituitary adenomas. We based our concept in previous reports on the microsurgical anatomy of the pituitary fossa's superior wall. However, proof of the usefulness of this concept in endoscopic approaches is yet missing. The aim of this study was to describe the endoscopic anatomy of the sellar barrier and its subtypes in a laboratory setting and to provide evidence of its clinical usefulness. METHODS We provided anatomical models in six fresh-frozen head and neck specimens. We performed an endoscopic endonasal approach and recreated a pathological model of each possible subtype of sellar barrier. To demonstrate the usefulness of this model in clinical practice, we conducted a prospective study including all patients with pituitary adenoma operated by an endoscopic approach between June and July 2019. RESULTS We successfully recreated the models for each subtype of sellar barrier. When analyzing the clinical cases, we found that intraoperatively, 73.69% (14) had a strong sellar barrier; 21.05% (4) had mixed sellar barrier, and 5.26% (1) had weak sellar barrier. We recorded one case of intraoperative CSF leak in a patient with a weak sellar barrier by magnetic resonance imaging. CONCLUSION We described the endoscopic anatomy of the sellar barrier and we recreated the three subtypes in anatomical models. We also identified these subtypes in a series of clinical cases, proving its clinical usefulness.
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Affiliation(s)
- Juan F Villalonga
- LINT, Facultad de Medicina, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina.,Division of Anatomy, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.,Department of Neurosciences, Reproductive and Odontostomatological Sciences, Division of Neurosurgery, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Christoph Fuchssteiner
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Domenico Solari
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, Division of Neurosurgery, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Alvaro Campero
- LINT, Facultad de Medicina, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina
| | - Luigi M Cavallo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, Division of Neurosurgery, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Paolo Cappabianca
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, Division of Neurosurgery, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Lena Hirtler
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
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