Analysis and management of delayed cerebrospinal fluid rhinorrhea after invasive pituitary adenoma surgery / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate the related factors and treatments of delayed cerebrospinal fluid rhinorrhea (CFR) after invasive pituitary adenoma (IPA) surgery. Methods: One hundred and forty-two patients with IPA treated in Tianjin Huanhu Hospital from January 2014 to January 2019 were analyzed retrospectively, including 62 males and 80 females, aging from 38 to 67 years. The clinical data of patients before and after operation were collected. All patients with postoperative CFR underwent endoscopic CFR repair. During the operation, residual or recurrent pituitary adenomas were resected, the dura around the leak was enlarged and the necrotic tissue was removed. For those who still had fluid leakage after repair, the necrotic tissue was cleaned up, the leakage was filled and reinforced under endoscopy. Endoscopic rhinorrhea repair was performed if necessary. The cerebrospinal fluid leak was repaired with multi-layer materials. The related risk factors of delayed CFR after operation were analyzed. SPSS 19.0 software was used for statistical analysis. Results: Among the 142 patients in this group, 64 cases underwent total tumor resection and 78 cases underwent non-total tumor resection. They were followed up for 6 to 72 months. Thirty-one cases had delayed CFR, with an incidence of 21.83%, and occurred between 1 and 5 years postoperatively, with an average of 2.4 years. All 31 patients with delayed CFR underwent endoscopic CFR repair. The nasal endoscopy was rechecked at 2 weeks, 1 month, 3 months and 6 months after operation. Twenty-eight patients were repaired successfully after 1 operation, while 2 patients after 2 operations and 1 patient after 3 operations. These patients were followed up for 6 to 60 months, and no CFR occurred again. Univariate analysis showed that the degree of tumor resection, recurrence, size, texture, postoperative radiotherapy and operator experience were the risk factors of delayed CFR (all P<0.05). Multivariate analysis showed that the degree of tumor resection and recurrence were the highest independent risk factors for postoperative CFR, and tumor size, texture, postoperative radiotherapy and operator experience were the independent risk factors in this study. Conclusions: Delayed CFR after IPA is related to the degree of tumor resection, recurrence, size, texture, postoperative radiotherapy and the operator experience. It is necessary to completely remove the tumor under endoscope, to expand resection of the dura and necrotic tissue around the leak, to repair the defect with multi-layer materials, to follow-up closely and to repair timely after operation.

Primary cerebrospinal fluid leak complicated with meningitis and parainfectious vasculitis: case report and literature review / Fístula liquórica primária complicada com meningite e vasculite parainfecciosa: relato de caso e revisão de literatura

This paper aims to describe a case of an immunocompetent 60-year-old patient presenting a subarachnoid hemorrhage in the absence of aneurysmal disease. Initial evaluation pointed to vasculitis of the central nervous system secondary to meningeal infection. After initial treatment, a cerebrospinal fluid leak was identified, with no antecedent of trauma, elucidating the origin of infection. Primary cerebrospinal fluid rhinorrhea has nonspecific symptomatology, defying diagnosis, and potentially serious complications. It represents an unusual predisposing factor for meningeal infection and secondary vasculitis. This case report exemplifies a feared complication of spontaneous cerebrospinal fluid leakage.

O estudo objetiva relatar um caso clínico de uma paciente imunocompetente de 60 anos apresentando hemorragia subaracnoide na ausência de doença aneurismática. Avaliação inicial apontou para vasculite de sistema nervoso central secundária à infecção meníngea. Após tratamento inicial, uma fístula liquórica foi identificada, sem antecedente de trauma, elucidando a origem da infecção. Rinorreia liquórica primária possui sintomatologia inespecífica, diagnóstico desafiador e complicações potencialmente graves. Representa um raro fator predisponente para infecção meníngea e vasculite. Este relato de caso exemplifica uma complicação temida da rinorreia liquórica espontânea.

Endoscopic endonasal double flap technique for reconstruction of large anterior skull base defects: technical note / Técnica endoscópica endonasal utilizando duplo retalho para reconstrução de grandes defeitos da base anterior do crânio: nota técnica

Abstract Introduction: One of the main concerns in endoscopic endonasal approaches to the skull base has been the high incidence and morbidity associated with cerebrospinal fluid leaks. The introduction and routine use of vascularized flaps allowed a marked decrease in this complication followed by a great expansion in the indications and techniques used in endoscopic endonasal approaches, extending to defects from huge tumours and previously inaccessible areas of the skull base. Objective: Describe the technique of performing endoscopic double flap multi-layered reconstruction of the anterior skull base without craniotomy. Methods: Step by step description of the endoscopic double flap technique (nasoseptal and pericranial vascularized flaps and fascia lata free graft) as used and illustrated in two patients with an olfactory groove meningioma who underwent an endoscopic approach. Results: Both patients achieved a gross total resection: subsequent reconstruction of the anterior skull base was performed with the nasoseptal and pericranial flaps onlay and a fascia lata free graft inlay. Both patients showed an excellent recovery, no signs of cerebrospinal fluid leak, meningitis, flap necrosis, chronic meningeal or sinonasal inflammation or cerebral herniation having developed. Conclusion: This endoscopic double flap technique we have described is a viable, versatile and safe option for anterior skull base reconstructions, decreasing the incidence of complications in endoscopic endonasal approaches.

Resumo Introdução: Uma das principais preocupações em abordagens endoscópicas endonasais da base do crânio tem sido a alta incidência e morbidade associada a fístulas liquóricas. A introdução e o uso rotineiro de retalhos vascularizados permitiram uma acentuada redução dessa complicação, seguida por uma grande expansão nas indicações e técnicas utilizadas nas abordagens endoscópicas endonasais, incluindo grandes tumores e áreas anteriormente inacessíveis da base do crânio. Objetivo: Descrever a técnica cirúrgica realizando uma reconstrução endoscópica multicamadas da base anterior do crânio com duplo retalho, sem craniotomia. Método: Descrição passo a passo da técnica endoscópica com duplo retalho (retalhos vascularizados nasoseptal e pericraniano e enxerto livre de fascia lata), utilizados e ilustrados em dois pacientes com meningioma do sulco olfatório submetidos à cirurgia por via endoscópica endonasal. Resultados: Em ambos os pacientes procedeu-se ressecção total macroscópica seguido de reconstrução da base anterior do crânio com os retalhos nasoseptal e pericraniano onlay e enxerto livre de fáscia lata inlay. Os pacientes apresentaram uma excelente recuperação, sem sinais de fístula liquórica, meningite, necrose do retalho, inflamação meníngea crônica ou sinonasal ou hérnia cerebral. Conclusão: A técnica endoscópica de duplo retalho, como descrita, trata-se de uma opção viável, versátil e segura para as reconstruções da base anterior do crânio, diminuindo a incidência de complicações em abordagens cirúrgicas endoscópicas endonasais.

Non-traumatic cerebrospinal fluid leak from a sphenoid sinus midline roof defect previously managed as allergic rhinitis

@#<p><strong>OBJECTIVE: </strong>To present a case of a non-traumatic cerebrospinal fluid (CSF) rhinorrhea from a midline sphenoid sinus roof that presented as a persistent postnasal drip and was previously managed as allergic rhinitis for 43 years.</p><p><strong>METHODS:</strong></p><p>            <strong>Design:</strong>           Case Report</p><p>            <strong>Setting:</strong>           Tertiary Private University Hospital</p><p>            <strong>Participant:</strong>     One</p><p><strong>RESULTS:</strong> A 58-year-old obese and hypertensive man presented with persistent post nasal drip and intermittent clear watery rhinorrhea. He had been managed as a case of allergic rhinitis for 43 years and was maintained on nasal steroid sprays without relief. Nasal endoscopy revealed pulsating clear watery discharge from the sphenoid ostium. On trans-sphenoidal surgery, a midline sphenoid sinus roof defect was sealed using a Hadad-Bassagasteguy flap.</p><p><strong>CONCLUSION:</strong> CSF rhinorrhea is uncommon and may mimic more common diseases such as allergic rhinitis. Because misdiagnosis can then lead to life threatening complications, physicians should be vigilant when seeing patients with clear watery rhinorrhea to be able to arrive at a proper diagnosis and provide prompt treatment.</p><p> </p><p><strong> </strong></p>

Fístula de líquido cefalorraquídeo nasoetmoidal derecha / Right Nasoethmoidal Cerebrospinal Fluid Leak

La fístula de líquido cefalorraquídeo es una patología frecuente en neurocirugía, su etio-logía es diversa, desde traumática hasta lesiones congénitas, convirtiéndose en un desafío quirúrgico, ya que a pesar de existir una variedad de abordajes, la elección y realización de uno de ellos dependerán de diferentes factores como: localización, tamaño del defecto, etiología, estadía hospi-talaria, entre otras. Sin embargo, la elección y realización de cualquier abordaje no garantiza la erradicación total de dicho problema; para este caso hemos seleccio-nado a paciente femenina de 43 años de edad que llegó al servicio de emergencia de neurocirugía con los síntomas clásicos de rinorraquia hialina y cefalea, síntoma predo-minante en dicha patología; posterior a reci-bir trauma craneal por impacto de un balón de futbol. Se decidió el abordaje transciliar como opción apropiada tomando en cuenta los factores ya señalados, siendo este más conservador con respecto a otros trans craneales, elemento que hace a este caso importante para ser publicado. El abordaje transciliar consiste en realizar incisión sobre ceja derecha hasta el extremo lateral de la misma, disecando por planos hasta llegar a cráneo. Luego se realiza agujero a 1cm late-ral a la línea media con dril, observando duramadre y seno frontal, se realiza craneo-tomía osteo plástica de ± 1.5 x 4 cm de longitud. Se observa la duramadre donde se realiza durotomía con base a la región orbi-to-frontal. La evolución de la paciente fue satisfactoria, sin persistencia de la fístula un año posterior al procedimiento...(AU)

Manejo endoscópico del meningoencefalocele de base de cráneo anterior / Endoscopic management of anterior skull base meningoencephalocele

RESUMEN La fístula de líquido cefalorraquídeo (LCR) corresponde a una comunicación anormal entre el espacio subaracnoideo y la porción neumatizada de la base de cráneo anterior en relación con las cavidades paranasales. Fístulas persistentes requieren reparación quirúrgica por el riesgo de meningitis, abscesos cerebrales y neumoencéfalo asociado. El gold standard es el abordaje extracraneal endoscópico. Uno de los principales inconvenientes es dañar estructuras intracraneanas nobles. La ayuda de tecnologías como la cirugía guiada por imágenes, contribuye a disminuir este problema. A continuación se presentan dos casos clínicos de fístula de líquido cefalorraquídeo en base de cráneo anterior, asociado a meningoencefalocele, intervenidos por cirugía endonasal guiada por imágenes.

ABSTRACT Endoscopic management of anterior skull base meningoencephalocele. The cerebrospinal fluid leak (CSF) is an abnormal communication between the subaracnoid space and the pneumatic portion of the anterior cranial base which is related to the paranasal cavities. The persistent leak requires surgery due to the potential complications such as meningitis, cerebral abscess or pneumoencephalus. Extracranial endoscopic approach is the gold standard procedure. One of the most important risk of the surgery is to damage noble intracranial structures. This situation can be ameliorated by using image guided surgery. We present two cases of CSF in anterior cranial base associated with meningoencephalocele that were treated in our center using nasal image guided endoscopic surgery.

Clinical analysis of adult spontaneous cerebrospinal fluid rhinorrhea / 临床耳鼻咽喉头颈外科杂志

OBJECTIVES@#To discuss the clinical characteristics, diagnosis and treatment of adult spontaneous cerebrospinal fluid rhinorrhea (CSFR).@*METHODS@#A retrospective study was conducted on 18 patients of CSFR. Nasal secretion was collected for biochemical analysis. Imaging examination was done for identification of the bony defect in skull base.@*RESULTS@#In all cases, the glucose concentration of nasal secretion were more than 1.7 mmol/L, and the β-2 transferrin detected by immunoelectrophoresis technique were positive. Twelve cases were found to have bony defect in skull base. For the rest 6 cases without bony defect, MRI findings of 6 cases showed sinusoidal effusion with similar signals to cerebrospinal fluid, thus predicting the location of the leak. Conservative treatment was successful in one case, and the other 17 patients underwent endoscopic sinus surgery with computer assisted navigation system (CANS). The results of all cases underwent surgery were successful by one time. No recurrence occured during the follow-up time (11 to 24 months).@*CONCLUSIONS@#The incidence of adult CSFR is low, hence it is easily to be missed and misdiagnosed. The majority of CSFR patients are middle-aged and elderly obese women, often combined with hypertension, diabetes, moderate and severe osteoporosis due to no daily exercise habits. Correct medical history collection, reasonable preoperative examination and accurate preoperative localization of bony defect are essential for surgical repairment. CANS used during operation can enable surgeons to locate the site of leakage accurately and shorten the operation time.

Body mass index and the risk of postoperative cerebrospinal fluid leak following transsphenoidal surgery in an Asian population

<p><b>INTRODUCTION</b>Postoperative cerebrospinal fluid (CSF) leak is a serious complication following transsphenoidal surgery for which elevated body mass index (BMI) has been implicated as a risk factor, albeit only in two recent North American studies. Given the paucity of evidence, we sought to determine if this association holds true in an Asian population, where the BMI criteria for obesity differ from the international standard.</p><p><b>METHODS</b>A retrospective study of 119 patients who underwent 123 transsphenoidal procedures for sellar lesions between May 2000 and May 2012 was conducted. Univariate and multivariate logistic regression analyses were performed to investigate the impact of elevated BMI and other risk factors on postoperative CSF leak.</p><p><b>RESULTS</b>10 (8.1%) procedures in ten patients were complicated by postoperative CSF leak. The median BMI of patients with postoperative leak following transsphenoidal procedures was significantly higher than that of patients without postoperative CSF leak (27.0 kg/m vs. 24.6 kg/m; p = 0.018). Patients categorised as either moderate or high risk under the Asian BMI classification were more likely to suffer from a postoperative leak (p = 0.030). Repeat procedures were also found to be significantly associated with postoperative CSF leak (p = 0.041).</p><p><b>CONCLUSION</b>Elevated BMI is predictive of postoperative CSF leak following transsphenoidal procedures, even in an Asian population, where the definition of obesity differs from international standards. Thus, BMI should be considered in the clinical decision-making process prior to such procedures.</p>

Traumatic cerebrospinal fluid leakage following septorhinoplasty

Septoplasty/septorhinoplasty is a common ear, nose and throat procedure offered for those patients with deviated septum who are suffering from nasal obstruction and functional or cosmetic problems. Although it is a basic and simple procedure, it could lead to catastrophic complications including major skull base injuries which result in cerebrospinal fluid (CSF) leaks. We describe two different cases of traumatic CSF leaks following septoplasty/septorhinoplasty at two different sites. The first patient suffered a CSF leak following septoplasty and presented to Alexandria University Hospital. The leak was still active at presentation and identified as coming from a defect in the roof of the sphenoid sinus and was repaired surgically. The second patient presented 4 days after her cosmetic septorhinoplasty with a CSF leak and significant pneumocephalus. She was managed conservatively. Understanding the anatomical variations of the paranasal sinuses and implementing proper surgical techniques are crucial in preventing intracranial complications when performing either septoplasty or septorhinoplasty. A good quality computed tomography of the nose and paranasal sinuses is a valuable investigation to avoid major complications especially CSF leaks following either procedure.

Endoscopic repair of cerebrospinal fluid rhinorrhea / Reparo endoscópico de fístulas liquóricas nasais

Abstract Introduction: Nasal liquorrhea indicates a cerebrospinal fluid fistula, an open communication between the intracranial cerebrospinal fluid and the nasal cavity. It can be traumatic and spontaneous. Objective: The aim of this study was to assess the outcome of endoscopic repair of cerebrospinal fluid fistula using fluorescein. Methods: This retrospective study included 30 patients of both sexes, with a mean age of 48.7 years, treated in the period from 2007 to 2015. All patients underwent lumbar administration of 5% sodium fluorescein solution preoperatively. Fistula was closed using three-layer graft and fibrin glue. Results: Cerebrospinal fluid fistulas were commonly located in the ethmoid (37%) and sphenoid sinus (33%). Most patients presented with traumatic cerebrospinal fluid fistulas (2/3 of patients). The reported success rate for the first repair attempt was 97%. Complications occurred in three patients: one patient presented with acute hydrocephalus, one with reversible encephalopathy syndrome on the fifth postoperative day with bilateral loss of vision, and one patient was diagnosed with hydrocephalus two years after the repair of cerebrospinal fluid fistula. Conclusion: Endoscopic diagnosis and repair of cerebrospinal fluid fistulas using fluorescein intrathecally has high success rate and low complication rate.

Resumo Introdução: A liquorreia nasal indica uma fístula liquórica (FL), uma comunicação aberta entre o líquido cerebrospinal intracraniano e a cavidade nasal. Pode ser traumática e espontânea. Objetivo: Avaliar o desfecho do reparo endoscópico da fístula liquórica nasal com o uso de fluoresceína. Método: Este estudo retrospectivo incluiu 30 pacientes de ambos os sexos, com idade média de 48,7 anos, tratados de 2007 a 2015. Todos os pacientes foram submetidos à administração lombar de solução de fluoresceína de sódio a 5% no pré-operatório. A fístula foi fechada com enxerto de três camadas e cola de fibrina. Resultados: As fístulas de líquido cerebrospinal foram comumente localizadas no seio etmoidal (37%) e esfenoidal (33%). A maioria dos pacientes apresentou fístulas liquóricas traumáticas (2/3). A taxa de sucesso relatada para a primeira tentativa de reparo foi de 97%. Complicações ocorreram em três pacientes: um apresentou hidrocefalia aguda; um, síndrome reversível de encefalopatia no quinto dia de pós-operatório com perda bilateral da visão; e um foi diagnosticado com hidrocefalia dois anos após o reparo de fístula liquórica. Conclusão: O diagnóstico endoscópico e o reparo de fístulas liquóricas nasais com uso de fluoresceína intratecal têm alta taxa de sucesso e baixo índice de complicações.

Intra-nasal mass presenting with Cushing's syndrome and CSF rhinorrhea: A case report

@#<p style="text-align: justify;">This  is  a  case  of  a  47  year-old  female  presenting  with  typical Cushingoid appearance and CSF rhinorrhea. MRI revealed a 4.4 cm x 2.9 cm x 4.5 cm enhancing intranasal mass with evidence of erosion of the left cribriform extending to the left anterior cranial fossa. Dexamethasone suppression  test  yielded  elevated  cortisol  level. Endoscopic nasal biopsy done showed a round cell tumor positive for  ACTH,  synaptophysin,  chromogranin  A,  and  S-100.  Patient subsequently  underwent  endoscopic  endonasal  excision  of  left intranasal mass with creation of pericranial flap for repair of CSF leak.  This  report  is  presented  to  discuss  a  rare  case  of  ACTH secreting esthesioneurblastoma including its diagnostic challenges and surgical options for repair of anterior cranial fossa defect to address CSF leak particularly by means of a vascularized pericranial flap.</p>

Visual and Quantitative Analysis of Cisternography for the Detection of Cerebrospinal Fluid Leakage / 대한핵의학회잡지

We herein present a case of a 29-year-old man with clear rhinorrhea, which persisted for 8 years following a myringotomy. After cotton pledgets were placed in several different regions of the nasal cavity, cisternography using Tc-99m DTPA was performed to measure the radioactivity of each pledget. Cisternography showed subtle uptake in the nasal cavity. However, intense uptake was detected in the pledget placed in the right eustachian tube orifice, where the pledget:serum count ratio was 10.3:1. The patient underwent duroplasty and cranioplasty, and the rhinorrhea resolved.

Endoscopic Repair of Spontaneous Cerebrospinal Fluid Rhinorrhea with a Nasoseptal Flap

Cerebrospinal fluid (CSF) rhinorrhea is classified into traumatic and non-traumatic types. Traumatic CSF rhinorrhea comprises the majority of cases, and major causes include head trauma, rhinologic procedures, and neurosurgery. Non-traumatic (spontaneous) CSF rhinorrhea with normal cerebrospinal pressure is a rare condition, occurring in only 4% of cases. We recently experienced a case of spontaneous CSF rhinorrhea complicated with bacterial meningitis. The defect site was identified in the left sphenoid sinus and was successfully repaired with a nasoseptal flap under an endoscopic approach. We present the etiology, classification, and treatment of this rare disease entity with a review of the literature.

Endoscopic endonasal management of cerebrospinal fluid rhinorrhea after anterior clinoidectomy for aneurysm surgery: changing the paradigm of complication management / Endoscopia endonasal no tratamento da fístula liquórica após clinoidectomia anterior na cirurgia de aneurisma: mudando o paradigma no manejo desta complicação

ABSTRACT Resection of the anterior clinoid process results in the creation of the clinoid space, an important surgical step in the exposure and clipping of clinoidal and supraclinoidal internal carotid artery aneurysms. Cerebrospinal fluid rhinorrhea is an undesired and potentially serious complication. Conservative measures may be unsuccesful, and there is no consensus on the most appropriate surgical treatment. Two patients with persistent transclinoidal CSF rhinorrhea after aneurysm surgery were successfully treated with a combined endoscopic transnasal/transeptal binostril approach using a fat graft and ipsilateral mucosal nasal septal flap. Anatomical considerations and details of the surgical technique employed are discussed, and a management plan is proposed.

RESUMO A ressecção da clinóide anterior resulta na criação do espaço clinoideo, um passo cirúrgico importante na exposição e clipagem de aneurismas dos segmentos clinoideo e supraclinoideo da artéria carótida interna. Fístula liquórica é uma das complicaçoes mais indesejadas e é potencialmente grave. O manejo com medidas conservadoras pode ser bem sucedido, e não há consenso sobre o tratamento cirúrgico mais adequado. Dois pacientes com rinorréia persistente secundária a fistula liquórica transclinoidal após cirurgia de aneurisma foram tratados com sucesso por uma abordagem endoscópica combinada transnasal/transseptal binostril usando um enxerto de gordura e retalho de mucosa naso-septal ipsilateral. Considerações anatômicas e detalhes da técnica cirúrgica empregada são discutidos, e um plano de manejo destes tipo de fistula líquorica é proposto.

A Clinical Analysis of Secondary Surgery in Trigeminal Neuralgia Patients Who Failed Prior Treatment

OBJECTIVE: Although many treatment modalities have been introduced for trigeminal neuralgia (TN), the long-term clinical results remain unsatisfactory. It has been particularly challenging to determine an appropriate treatment strategy for patients who have responded poorly to initial therapies. We analyzed the surgical outcomes in TN patients who failed prior treatments. METHODS: We performed a retrospective analysis of 37 patients with recurrent or persistent TN symptoms who underwent surgery at our hospital between January 2010 and December 2014. Patients with follow-up data of at least one year were included. The prior treatment modalities of the 37 patients included microvascular decompression (MVD), gamma knife radiosurgery (GKRS), and percutaneous procedures such as radiofrequency rhizotomy (RFR), balloon compression, and glycerol rhizotomy (GR). The mean follow-up period was 69.9 months (range : 16–173). The mean interval between the prior treatment and second surgery was 26 months (range : 7–123). We evaluated the surgical outcomes using the Barrow Neurological Institute (BNI) pain intensity scale. RESULTS: Among the 37 recurrent or persistent TN patients, 22 underwent MVD with partial sensory rhizotomy (PSR), 8 received MVD alone, and 7 had PSR alone. Monitoring of the surgical treatment outcomes via the BNI pain intensity scale revealed 8 (21.6%) patients with a score of I, 13 (35.1%) scoring II, 13 (35.1%) scoring III, and 3 (8.2%) scoring IV at the end of the follow-up period. Overall, 91.8% of patients had good surgical outcomes. With regard to postoperative complications, 1 patient had transient cerebrospinal fluid rhinorrhea (2.7%), another had a subdural hematoma (2.7%), and facial sensory changes were noted in 8 (21.1%) patients after surgery. CONCLUSION: Surgical interventions, such as MVD and PSR, are safe and very effective treatment modalities in TN patients who failed initial or prior treatments. We presume that the combination of MVD with PSR enabled us to obtain good short- and long-term surgical outcomes. Therefore, aggressive surgical treatment should be considered in patients with recurrent TN despite failure of various treatment modalities.

Endoscopic Repair with Above and Below Technique of Recurrent Cerebrospinal Fluid Leak from the Posterior wall of Frontal Sinus: Case Report

Cerebrospinal fluid (CSF) rhinorrhea can be caused by head trauma, brain or sinus surgery, or neoplastic sinonasal disease. There are many diverse techniques for repairing skull base defects, and recently there has been a shift from using external approaches to endoscopic approaches. The reported success rate after endoscopic repair is 97%, but CSF rhinorrhea may recur in some cases. Recently, we witnessed one case of recurrent CSF rhinorrhea from the posterior wall of the frontal sinus after a traffic accident. The patient was a 48-year-old male and had recurrent CSF rhinorrhea, severe pneumocephalus and mental change even after a CSF leakage repair operation was performed by the neurosurgeon using the periosteal flap. We successfully treated recurrent frontal CSF rhinorrhea with fat graft and mucosal graft, using the above and below approach with the guidance of a navigation system.

Chemical and cytological analysis of cerebral spinal fluid after intrathecal injection of hypodense fluorescein / Análise química e citológica do líquor após injeção intratecal de solução hipodensa de fluoresceína

ABSTRACT INTRODUCTION: Intrathecal fluorescein has been effective for topographic diagnosis of rhinoliquorrhea. Nonetheless, there are no reports on the study of cerebral spinal fluid (CSF) after use of intrathecal fluorescein. OBJECTIVE: A prospective study attempting to evaluate CSF through chemical and cytological analysis, after injection of fluorescein. METHODS: Prospective analysis of 24 samples of CSF after intrathecal injection of fluorescein for topographic diagnosis of CSF fistulae, collected at the time of puncture and after 24 and 48 h, divided by cellularity: Group 1, up to five cells, and Group 2, with more than five cells. RESULTS: The yellow-greenish color of CSF remained after 48 h in 36%, evidencing permanence of fluorescein. No changes in protein and glucose levels were observed between 0-24 h and 0-48 h. In group 2, an increase in cell count was observed between 24 h and 48 h (p = 0.019). In both groups, there was an increase of neutrophils between 0 and 48 h (p = 0.048) and a decrease between 24 and 48 h (p = 0.05). CONCLUSION: Intrathecal fluorescein provoked discreet meningeal reactions, such as an increase of cells between 24 and 48 h and an increase of neutrophils at 24 h, with a subsequent decrease at 48 h with no correlation with symptomatology.

RESUMO Introdução: A fluoresceína intratecal tem sido efetiva no diagnóstico topográfico da rinoliquorréia. Entretanto, não há estudos no líquor após o uso de fluoresceína intratecal. Objetivo: Estudo prospectivo visando avaliar o líquor, através de análise química e citológica, após injeção de fluoresceína. Método: Análise prospectiva de 24 punções após injeção intratecal de fluoresceína para diagnóstico topográfico de fístula liquórica, coletado no momento da punção, 24 e 48 horas, divididos pela celularidade: grupo 1, com até 5 células e grupo 2 com mais de 5 células. Resultado: A coloração amarelo-esverdeada do líquor permaneceu após 48 horas em 36%, evidenciando permanência de fluoresceína. Observou-se ausência de mudanças no nível de proteína e glicose entre 0-24 horas e 0-48 horas. No grupo 2, um aumento na contagem celular foi observado entre 24 e 48 horas (p = 0,019). No dois grupos juntos, observou-se um aumento de neutrófilos entre 0 e 48 horas (p = 0,048) e uma diminuição entre 24 e 28 horas (p = 0,05). Conclusão: Fluoresceína intratecal provocou discretas reações meníngeas, como o aumento de células entre 24 e 48 horas e aumento dos dos neutrófilos em 24 horas com uma subsequente dimi nuição em 48 horas sem correlação com sintomas.

Manejo conservador no tratamento de fístula liquórica nasal iatrogênica / Conservative treatment of iatrogenic nasal CSF fistula

A fístula liquórica nasal, identificada pela presença de líquido cefalorraquidiano na cavidade nasal, é uma condição de risco para o desenvolvimento de meningite. Tal entidade, quando de etiologia iatrogênica, é de incidência significativa naqueles pacientes submetidos a cirurgias endoscópicas nasais e cirurgias da base do crânio. O otorrinolaringologista tem exercido o crucial papel de realizar o diagnóstico e prover o tratamento dessa entidade, com o objetivo de evitar as complicações da infecção meníngea e suas sequelas. No presente estudo descrevemos o caso de um paciente submetido à cirurgia nasal que apresentou rinoliquorreia no período pós-operatório de cirurgia nasal não especificada. O paciente apresentou evolução favorável com manejo conservador. É de suma importância o conhecimento das particularidades diagnósticas e terapêuticas dessa condição devido à sua incidência significativa e às suas complicações potencialmente deletérias (AU)

Nasal CSF leak, identified by the presence of cerebrospinal fluid in the nasal cavity, is a risk factor for the development of meningitis. Such an entity, if iatrogenic, is significantly incident in patients undergoing nasal endoscopic surgery and skull base surgery. The otolaryngologist has played a crucial role in making a diagnosis and provide treatment for such entity, in order to avoid the complications of meningeal infection and its sequelae. In the present study we report the case of a patient undergoing nasal surgery who had CSF leak in the postoperative period of unspecified nasal surgery. The patient presented favorable evolution with conservative management of the condition, with evidence of fistula closure through control cisternotomography. Knowledge of the diagnostic and therapeutic characteristics of this condition is very important due to its significant incidence and its potentially harmful complications (AU)

Cerebrospinal Fluid Rhinorrhea and Seizure Caused by Temporo-Sphenoidal Encephalocele

This case report describes the symptoms and clinical course of a 35-year-old female patient who was diagnosed with a temporo-sphenoidal encephalocele. It is characterized by herniation of cerebral tissue of the temporal lobe through a defect of the skull base localized in the middle fossa. At the time of first presentation the patient complained about recurrent nasal discharge of clear fluid which had begun some weeks earlier. She also reported that three months earlier she had for the first time suffered from a generalized seizure. In a first therapeutic attempt an endoscopic endonasal approach to the sphenoid sinus was performed. An attempt to randomly seal the suspicious area failed. After frontotemporal craniotomy, it was possible to localize the encephalocele and the underlying bone defect. The herniated brain tissue was resected and the dural defect was closed with fascia of the temporalis muscle. In summary, the combination of recurrent rhinorrhea and a first-time seizure should alert specialists of otolaryngology, neurology and neurosurgery of a temporo-sphenoidal encephalocele as a possible cause. Treatment is likely to require a neurosurgical approach.

Application of an image navigation system in nasal endoscopic surgery in treatment of basicranial tumor / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To investigate the therapeutic effects of the image navigation system in nasal endoscopic surgery in treatment of basicranial tumor.@*METHOD@#Retrospective analysis was carried out in 17 patients with basicranial tumor who underwent nasal endoscopic resection via image navigation system. The accuracy of image navigation system, operation procedure time, curative effect and complications were analyzed and summarized to evaluate the effect.@*RESULT@#The image navigation system provided an accurate anatomical localization 0.5-2.0 mm localization error (mean 1.2 mm). The operation procedure time was 1.5-3.0 h. Postoperative complications occurred in 3 of 17 patients including cerebrospinal fluid rhinorrhea and injury of sieve plate. Two patients recrudesce within half a year.@*CONCLUSION@#The image navigation system in combination with a nasal endoscope is helpful in the resection of basicranial tumor with minimal trauma, increasing the curative effect and avoiding complications.