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1.
Dermatol Surg ; 49(9): 838-843, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37399134

RESUMO

BACKGROUND: Ear keloid lesions present a significant challenge to the aesthetic surgeon. Keloids are known to recur and can cause severe cosmetic, functional, and psychological impairments. Several adjuvants to surgical removal have been promoted, with varying recurrence rates. OBJECTIVE: To evaluate the effectiveness of triple therapy to treat secondary (and large primary) auricular keloids. MATERIALS AND METHODS: Patients with secondary or large primary auricular keloids undergoing triple therapy were prospectively studied. Keloids were excised intramarginally under magnification and repeated triamcinolone acetonide 40 mg/mL injections were administered, followed by the application of a custom-made acrylate pressure device. Recurrent keloid formation and adverse events were monitored during a minimum of 6 months of follow-up. RESULTS: Sixteen auricular keloid lesions (3 large primary and 13 secondary) were subjected to the proposed technique with a mean follow-up of 28 months. All cases that adhered to the protocol were free of keloid after triple therapy. Side effects were limited to 1 case of lobular atrophy and slight hypopigmentation. All patients were satisfied with the results. CONCLUSION: The triple therapy protocol is highly effective in primary and secondary auricular keloid as long as patients remain compliant.


Assuntos
Queloide , Humanos , Queloide/tratamento farmacológico , Queloide/cirurgia , Estudos Prospectivos , Terapia Combinada , Recidiva Local de Neoplasia , Resultado do Tratamento , Recidiva
2.
Eur Arch Otorhinolaryngol ; 273(5): 1243-51, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-25759258

RESUMO

Merkel cell carcinoma (MCC) is a rare primary cutaneous neuroendocrine carcinoma. It occurs predominantly in the head and neck area and often behaves aggressively. In this single-institution retrospective observational cohort study, we describe the results of a treatment strategy that we developed over the past decades. Endpoints of this study were local, regional and distant control, disease-specific survival and overall survival. In total 47 patients with head and neck MCC, diagnosed in the Netherlands Cancer Institute-Antoni van Leeuwenhoek (NKI-AvL) between 1984 and 2012, were included in this study. Local tumor control was 82 % (95 % CI 71-95 %) at 5 years. Regional lymph node metastases were found at the moment of diagnosis in 13 cases (28 %). In the group of patients who were initially cN0, the 5-year regional control was 80 % (68-95 %). The 5-year metastasis-free interval probability was 80 % (68-94 %). The disease-specific survival (DSS) at 5 years was 70 % (56-86 %). An overall survival of 54 % (40-72 %) was found at 5-year follow-up and of 37 % (23-59 %) at 10-year follow-up. Univariable Cox regression analysis of many clinical and pathological variables did not identify any predictors for DSS. The MCC has a high propensity for locoregional and distant spread in the head and neck region. Undertreatment, especially of the lymph nodes in the neck, is a serious problem as regional (micro)metastasis are common even in T1 tumors. Future research will have to elucidate the role of the sentinel lymph node procedure versus the elective selective node dissection and standardized elective local and regional radiotherapy in the head and neck area.


Assuntos
Carcinoma de Célula de Merkel , Neoplasias de Cabeça e Pescoço , Neoplasias Cutâneas , Idoso , Carcinoma de Célula de Merkel/mortalidade , Carcinoma de Célula de Merkel/patologia , Feminino , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Linfonodos/patologia , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica/diagnóstico , Estadiamento de Neoplasias , Países Baixos/epidemiologia , Prognóstico , Estudos Retrospectivos , Medição de Risco/métodos , Neoplasias Cutâneas/mortalidade , Neoplasias Cutâneas/patologia , Análise de Sobrevida
3.
Facial Plast Surg ; 29(2): 140-5, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23564247

RESUMO

The objective of this study is to evaluate the functional and aesthetic results obtained from the use of the lateral crural underlay spring (LCUS) graft for the treatment of internal and external nasal valve collapse. In this retrospective study, preoperative and postoperative functional and aesthetic results were compared in patients undergoing treatment for internal or external nasal valve collapse. Results were scored by means of a questionnaire and visual analog scale completed by the patients. Eight patients were recruited and included in this study: 6 (75%) had an improvement in their functional scores, 1 (12%) remained unchanged, and 1 (12%) scored worse. The mean difference in functional scores after the intervention was 9.4 points (p < 0.005). There was no significant difference in aesthetic scores. We found evidence that the LCUS graft is effective for relieving nasal obstruction in patients with internal, external, or combined nasal valve collapse. The amount of increased sidewall tension and rigidity as well as the increase in nasal valve angle and cross-sectional area are determined by the length of the graft, which can be varied according to need.


Assuntos
Cartilagens Nasais/transplante , Obstrução Nasal/cirurgia , Rinoplastia/métodos , Adulto , Idoso , Estética , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Septo Nasal/cirurgia , Estudos Retrospectivos , Inquéritos e Questionários , Escala Visual Analógica
4.
Ned Tijdschr Geneeskd ; 1672023 05 10.
Artigo em Holandês | MEDLINE | ID: mdl-37163391

RESUMO

Case of a 17-year-old female with rhinitis, intermittent fever, painful enlarged lymph nodes and painless bilateral upper eyelid swelling. Complicated sinusitis and vascular pathology were ruled out, but Epstein-Barr serology was positive. Bilateral upper eyelid edema can be an early presentation of mononucleosis infectiosa and is called the Hoagland sign.


Assuntos
Angioedema , Mononucleose Infecciosa , Feminino , Humanos , Adolescente , Pálpebras/patologia , Mononucleose Infecciosa/complicações , Febre/etiologia , Linfonodos
5.
Ned Tijdschr Geneeskd ; 1672023 03 08.
Artigo em Holandês | MEDLINE | ID: mdl-36920297

RESUMO

A 48-year-old HIV-positive patient presented at the otorhinolaryngology department with a growing mass on the left side of his neck, fever and night sweats. Biopsy demonstrated a granulomatous, necrotizing inflammation. After extensive additional testing, PCR on lesion punctate material was positive for Chlamydia trachomatis, yielding a diagnosis of cervical lymphogranuloma venereum.


Assuntos
Linfadenopatia , Linfogranuloma Venéreo , Masculino , Humanos , Pessoa de Meia-Idade , Linfogranuloma Venéreo/diagnóstico , Chlamydia trachomatis/genética , Linfadenopatia/diagnóstico , Reação em Cadeia da Polimerase , Linfonodos
6.
Ann Otol Rhinol Laryngol ; 120(12): 807-13, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22279952

RESUMO

OBJECTIVES: The aim of this study was to formulate a predictive rule for vestibular schwannoma growth during the initial observation period after diagnosis. METHODS: Logistic regression models were fitted, with tumor growth in the first year as the dependent variable and patient characteristics as the independent variables. Backward selection was used to eliminate superfluous predictors. The area under the receiver operating characteristic curve was taken as a measure of the model's discriminative power. RESULTS: Eventually, the model or rule consisted of 4 significant growth predictors: localization (if extrameatal, +1; if intrameatal, 0), sudden sensorineural hearing loss (if present, -1; if absent, 0), balance symptoms (if present, +1; if absent, 0), and complaints of hearing loss for less than 2 years (if present, +1; if absent, or present for more than 2 years, 0). A higher score indicates a higher likelihood of tumor growth during the period of observation after diagnosis. If the total score is 0 or less, the likelihood of tumor growth during the first year after diagnosis is less than 10%. If the score is 3, the likelihood of growth during the first year after diagnosis is more than 70%. CONCLUSIONS: We were able to create a useful rule to predict vestibular schwannoma growth during the first year after diagnosis.


Assuntos
Neuroma Acústico/patologia , Área Sob a Curva , Audiometria , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prognóstico , Curva ROC , Estudos Retrospectivos
7.
Eur Arch Otorhinolaryngol ; 267(6): 867-73, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19894058

RESUMO

This study evaluates the impact of gamma knife radiosurgery (GKRS) on the quality of life (QOL) of patients with a sporadic vestibular schwannoma (VS). This study pertains to 108 VS patients who had GKRS in the years 2003 through 2007. Two different QOL questionnaires were used: medical outcome study short form 36 (SF36) and Glasgow benefit inventory (GBI). Radiosurgery was performed using a Leksell 4C gamma knife. The results of the QOL questionnaires in relation to prospectively and retrospectively gathered data of the VS patients treated by GKRS. Eventually, 97 patients could be included in the study. Their mean tumor size was 17 mm (range 6-39 mm); the mean maximum dose on the tumor was 19.9 Gy (range 16-25.5 Gy) and the mean marginal dose on the tumor was 11.1 (range 9.3-12.5 Gy). SF36 scores showed results comparable to those for a normal Dutch population. GBI showed a marginal decline in QOL. No correlation was found between QOL and gender, age, tumor size, or radiation dose. Increased audiovestibular symptoms after GKRS were correlated with a decreased GBI score, and decreased symptoms were correlated with a higher QOL post-GKRS. In this study shows that GKRS for VS has little impact on the general QOL of the VS patient. However, there is a wide range in individual QOL results. Individual QOL was influenced by the audiovestibular symptoms. No predictive patient, tumor, or treatment factors for QOL outcome after GKRS could be determined. Comparison with microsurgery is difficult because of intra group variability.


Assuntos
Neuroma Acústico/psicologia , Neuroma Acústico/cirurgia , Satisfação do Paciente , Qualidade de Vida/psicologia , Radiocirurgia/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/psicologia , Inquéritos e Questionários , Adulto Jovem
8.
Eur Arch Otorhinolaryngol ; 266(5): 641-6, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-18704473

RESUMO

Management of a sporadic vestibular schwannoma (VS) is still a subject of controversy, mainly due to distinct and unpredictable growth patterns. To embark on an appropriate therapy it is necessary to dispose of a reliable prediction about tumor progression. This study aims to design a risk profile with predictors for VS growth. A total of 234 VS patients who were managed conservatively were included. Data concerning (duration of) symptoms and localization of VS were analyzed with Cox proportional hazards regression models. Predictors for growth are unsteadiness/vertigo, no sudden onset of hearing loss and short duration of hearing loss. High-risk patients have (1) VS with an extrameatal localization, short duration of hearing loss and at least one of the two other predictors (unsteadiness/vertigo or no sudden sensorineural hearing loss) or (2) VS with an intrameatal localization and all three other predictors. Low-risk patients have (1) VS with an extrameatal component and no other predictor or (2) VS with an intrameatal localization and at most one other predictor. High-risk patients have a risk of growth of 36.9% in the first year and 64.6% in the second year. For patients with a low risk this is 2.5 and 12.7%, respectively. Simple data gathered at the moment of diagnosis may provide useful information since they may lead to a risk profile for growth.


Assuntos
Neoplasias da Orelha/patologia , Imageamento por Ressonância Magnética , Invasividade Neoplásica , Estadiamento de Neoplasias , Neuroma Acústico/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Audiometria de Tons Puros , Audiometria da Fala , Diagnóstico Diferencial , Progressão da Doença , Feminino , Nível de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Adulto Jovem
9.
Laryngoscope ; 116(5): 776-9, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16652086

RESUMO

OBJECTIVE: In this retrospective study, we tested the hypothesis that vestibular evoked myogenic potential (VEMP) thresholds are more often elevated or absent in patients with Ménière's disease experiencing Tumarkin drop attacks than in other patients with Ménière's disease. METHODS: Subjects included normal subjects (n = 14) and patients with unilateral Ménière's disease by AAO-HNS (1995) diagnostic criteria with (n = 12) and without (n = 82) Tumarkin drop attacks at a large specialty hospital otology service. VEMP threshold testing was conducted using 250, 500, and 1,000 Hz tone burst stimuli. RESULTS: VEMP responses were present in at all frequencies in both ears of all normal subjects. In unaffected ears of patients with unilateral Ménière's disease, VEMPs were undetectable in 13% of measurements attempted. This number rose to 18% in affected ears of patients with unilateral Ménière's disease and to 41% in Meniere ears with Tumarkin drop attacks. Frequency tuning of the VEMP response in normal subjects showed lowest thresholds at 500 Hz. In Meniere ears, the tuning was altered such that the 500-Hz thresholds were higher than the 1,000-Hz thresholds. There was a gradient of threshold elevation and altered tuning that corresponded to the gradient of worsening disease. CONCLUSION: Our findings support the hypothesis that Tumarkin drop attacks arise from advanced disease involving the saccule and that VEMP may be a clinically valuable metric of disease severity or progression in patients with Ménière's disease.


Assuntos
Eletromiografia , Potenciais Evocados Auditivos , Doença de Meniere/diagnóstico , Síncope/diagnóstico , Estimulação Acústica , Adulto , Idoso , Análise de Variância , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Probabilidade , Valores de Referência , Estudos Retrospectivos , Sensibilidade e Especificidade , Limiar Sensorial , Índice de Gravidade de Doença , Testes de Função Vestibular/métodos
10.
Laryngoscope ; 116(6): 987-92, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16735912

RESUMO

OBJECTIVE: The objective of this study was to explore the useful of vestibular evoked myogenic potential (VEMP) testing for detecting endolymphatic hydrops, especially in the second ear of patients with unilateral Ménière disease (MD). METHODS: This study was performed at a tertiary care academic medical center. Part I consisted of postmortem temporal bone specimens from the temporal bone collection of the Massachusetts Eye & Ear Infirmary; part II consisted of consecutive consenting adult patients (n = 82) with unilateral MD by American Academy of Otolaryngology-Head and Neck Surgery criteria case histories. Outcome measures consisted of VEMP thresholds in patients and histologic saccular endolymphatic hydrops in postmortem temporal bones. RESULTS: Saccular hydrops was observed in the asymptomatic ear in six of 17 (35%) of temporal bones from donors with unilateral MD. Clinic patients with unilateral MD showed elevated mean VEMP thresholds and altered VEMP tuning in their symptomatic ears and, to a lesser degree, in their asymptomatic ears. Specific VEMP frequency and tuning criteria were used to define a "Ménière-like" response. This "Ménière-like" response was seen in 27% of asymptomatic ears of our patients with unilateral MD. CONCLUSIONS: Bilateral involvement is seen in approximately one third of MD cases. Saccular hydrops appears to precede symptoms in bilateral MD. Changes in VEMP threshold and tuning appear to be sensitive to these structural changes in the saccule. If so, then VEMP may be useful as a detector of asymptomatic saccular hydrops and as a predictor of evolving bilateral MD.


Assuntos
Hidropisia Endolinfática/diagnóstico , Potenciais Evocados Auditivos , Doença de Meniere/diagnóstico , Estimulação Acústica , Lateralidade Funcional , Humanos , Sáculo e Utrículo , Sensibilidade e Especificidade
11.
Ned Tijdschr Geneeskd ; 156(18): A3220, 2012.
Artigo em Holandês | MEDLINE | ID: mdl-22551747

RESUMO

A 13-year-old patient was referred to the ENT department because of a ring-shaped radiopaque foreign body in her right nasal cavity demonstrated on an orthopantomogram. Her medical history revealed long-standing right-sided rhinorrhea thought to be caused by an inhalation allergy. In case of unilateral rhinorrhea in a child a nasal foreign body has to be excluded.


Assuntos
Corpos Estranhos/diagnóstico por imagem , Obstrução Nasal/diagnóstico , Adolescente , Atresia das Cóanas/diagnóstico , Diagnóstico Diferencial , Feminino , Corpos Estranhos/complicações , Corpos Estranhos/diagnóstico , Humanos , Obstrução Nasal/etiologia , Radiografia , Rinite Alérgica Sazonal/diagnóstico
12.
Laryngoscope ; 121(7): 1359-66, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21647893

RESUMO

OBJECTIVES/HYPOTHESIS: A prospective long-term follow-up study was conducted to evaluate the results of gamma knife radiosurgery (GKRS) for vestibular schwannoma (VS) patients. Both axial and volumetric measurements are used to determine tumor size during follow-up. STUDY DESIGN: Individual prospective cohort study. METHODS: A total of 110 VS patients were referred for radiosurgery between 2002 and 2007. All patients were treated with a Leksell 4C gamma knife. There were 12.5 to 13 Gy prescribed to the isodose covering 90% of the tumor volume. The resulting marginal dose was on average 11.0 Gy (range, 9.3-12.5 Gy). Tumor size and tumor volume were determined before and after gamma knife treatment at regular intervals. The minimal follow-up period was 2 years. RESULTS: There were 100 patients included in the study. Eight patients needed additional treatment after a mean follow-up period of 38 months. One patient experienced a temporary facial nerve deficit. No growth pattern could be recognized for tumor growth after GKRS. Based on the measurements of the largest extrameatal diameter, the tumor size would have decreased or remained stable in 94%. Based on volumetric measurement, the tumor size was decreased or remained stable in 79%. CONCLUSIONS: High tumor control and low complication rates make GKRS a good therapy for VS. If tumor growth occurs after GKRS, a conservative management can be considered because continued tumor growth is uncertain. The extrameatal diameter on axial magnetic resonance imaging seems to be a reliable parameter of the size of a VS. Volumetry is the preferred method to assess the dimensions of a VS, although the consequences of strong volumetric increase, especially in small tumors, can be different depending on individual differences in tumor size.


Assuntos
Neuroma Acústico/patologia , Neuroma Acústico/cirurgia , Radiocirurgia/métodos , Carga Tumoral/fisiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Seguimentos , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Neuroma Acústico/diagnóstico , Complicações Pós-Operatórias/fisiopatologia , Estudos Prospectivos , Radiocirurgia/efeitos adversos , Dosagem Radioterapêutica , Medição de Risco , Índice de Gravidade de Doença , Estatísticas não Paramétricas , Fatores de Tempo , Resultado do Tratamento
13.
Laryngoscope ; 121(9): 1834-8, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22024833

RESUMO

OBJECTIVES/HYPOTHESIS: Gamma knife radiosurgery (GKRS) has become an important treatment modality for vestibular schwannomas. The primary aim of this study was to investigate whether tumor growth at the moment of GKRS has any correlation with the outcome. The secondary aim was to identify clinical predictors of radioresistance in vestibular schwannoma patients treated with GKRS. STUDY DESIGN: One hundred vestibular schwannoma patients, treated with GKRS, were divided into two groups: 1) proven tumor growth preceding GKRS; and 2) previous history of growth unknown. GKRS outcome was defined in two ways. According to the first definition, GKRS was said to have failed when additional treatment had taken place. According to the second one, a volume decrease >20% after 2 years marked successful treatment. METHODS: Correlations between outcome and growth status were determined with SPSS software. Furthermore, the study assessed how different variables (patient data, history, tumor characteristics, imaging, and audiovestibular examinations) correlated with the outcome of GKRS. RESULTS: No significant difference regarding success and failure of GKRS was found between the two patient groups. The mean reduction in tumor volume after GKRS was less pronounced in patients in whom tumor growth was demonstrated before treatment, but this finding was not significant. No significant predictors (P < .05) could be identified in this data set. CONCLUSIONS: This study found no indication that growth at the moment of GKRS influences therapeutic outcome, nor did it identify any predictors of the outcome after GKRS in vestibular schwannoma patients.


Assuntos
Neuroma Acústico/cirurgia , Radiocirurgia/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Audiometria de Tons Puros , Testes Calóricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neuroma Acústico/patologia , Valor Preditivo dos Testes , Doses de Radiação , Estatísticas não Paramétricas , Resultado do Tratamento
14.
Otol Neurotol ; 32(4): 680-5, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21451430

RESUMO

OBJECTIVES: Endolymphatic sac tumors (ELSTs) are rare adenomatous tumors arising in the petrous bone, either spontaneously (isolated) or in association with von Hippel-Lindau (VHL) disease. For 9 patients, this study describes the typical features and management of ELST and the clinical outcome of treatment. Similarities and differences are identified for ELST in isolation and in association with VHL disease. STUDY DESIGN: Case series. SETTING: Tertiary referral center. PATIENTS: The patient database was searched for patients diagnosed with ELST. All other tertiary referral centers in The Netherlands were invited to do likewise. INTERVENTIONS: The patient records were screened for presenting symptoms, hearing, imaging, treatment, and treatment outcome. Histopathologic finding was reviewed by a senior pathologist. RESULTS: Six patients with an isolated ELST and 3 patients with an ELST in association with VHL disease were identified. In the isolated ELST group, 5 patients were treated surgically and 1 patient was administered primary radiotherapy. In the VHL group, 1 patient underwent surgery and 2 patients were treated conservatively after a wait-and-magnetic resonance imaging-scan protocol. All individual treatment outcomes are scrupulously presented in this article. CONCLUSION: This study compiles and describes 9 cases of ELST. In 8 of 9 patients, the ELST could be controlled by surgery, radiotherapy, or a wait-and-scan protocol. The large interpatient differences make it difficult to standardize the management of this disease. The management is strongly influenced by comorbidity and tumor stage.


Assuntos
Adenoma/cirurgia , Neoplasias da Orelha/cirurgia , Saco Endolinfático/cirurgia , Adenoma/patologia , Adenoma/radioterapia , Adulto , Idoso , Neoplasias da Orelha/patologia , Neoplasias da Orelha/radioterapia , Saco Endolinfático/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
15.
Laryngoscope ; 119(6): 1076-81, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19399836

RESUMO

OBJECTIVES/HYPOTHESIS: This study was designed to evaluate hearing preservation after gamma knife radiosurgery (GKRS) and to determine the relation between hearing preservation and cochlear radiation dose in patients with a sporadic vestibular schwannoma (VS). METHODS: Prospective study involving patients suffering from VS who received GKRS from June 2003 until November 2007. Pure tone and speech audiometry were conducted before and after GKRS. The thresholds at pure tone audiometry were taken as a measure of hearing. Pure tone average (PTA) was defined as the mean threshold at 0.5 kHz, 1.0 kHz, 2.0 kHz, and 4.0 kHz. Hearing was classified according to the 2003 consensus meeting in Tokyo. Stereotactic surgery was performed using a Leksell 4C Gamma Knife (Elekta, Stockholm, Sweden). RESULTS: A total of 69 patients were included in the study. Mean tumor size was 17 mm. Mean marginal dose at the tumor was 11.0 Gy (range, 9.3 Gy-12.3 Gy), mean maximal dose was 19.7 Gy (range, 16 Gy-25.5 Gy). Mean maximal dose at the cochlea was 10.27 Gy (range, 3.1 Gy-16.1 Gy), and mean minimal dose at the cochlea was 2.6 Gy (range, 0.9 Gy-7.4 Gy). Mean PTA before GKRS was 43 dB (standard deviation [SD] 20 dB), mean PTA after GKRS was 63 dB (SD 30 dB). Mean interval between pre-GKRS audiometry and GKRS was 8.0 months. Between GKRS and post-GKRS audiometry, mean interval was 14.2 months. Hearing was considered to be preserved (max +1 class, Tokyo classification) in 52 (75%) of 69 patients. However, only 32 patients had class A, B, or C (serviceable hearing) before GKRS. Within this group, only 13 patients (41%) had a hearing class A, B, or C after GKRS. A significant relation was found between the maximal cochlear dose and the difference in PTA before and after GKRS. CONCLUSIONS: Hearing preservation is correlated to the maximal radiation dose at the cochlea. The purpose of developing GKRS techniques was to avoid collateral damage in healthy tissues. This study emphasizes the need for exact radiation planning to reduce the cochlear radiation dose if the hearing is to be preserved. Laryngoscope, 2009.


Assuntos
Audiometria de Tons Puros , Limiar Auditivo/fisiologia , Cóclea/cirurgia , Perda Auditiva Neurossensorial/fisiopatologia , Neuroma Acústico/cirurgia , Complicações Pós-Operatórias/fisiopatologia , Radiocirurgia/métodos , Adolescente , Adulto , Idoso , Condução Óssea/fisiologia , Feminino , Seguimentos , Perda Auditiva Neurossensorial/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Adulto Jovem
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