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Featured researches published by J. Michel.


European Annals of Otorhinolaryngology, Head and Neck Diseases | 2012

Fine-needle aspiration cytology in the management of parotid masses: Evaluation of 249 patients

N. Fakhry; F. Antonini; J. Michel; M. Penicaud; Julien Mancini; Aude Lagier; L. Santini; Turner F; M.-A. Chrestian; M. Zanaret; P. Dessi; Antoine Giovanni

INTRODUCTION The role of fine-needle aspiration cytology (FNAC) in the management of parotid tumours is still the subject of controversy. The purpose of this study was to determine the diagnostic value of FNAC in our institution in order to define its place in the diagnostic strategy. PATIENTS AND METHODS This retrospective study was based on 249 patients who had undergone preoperative FNAC before being operated in our institution between 2001 and 2008. All examinations were performed and interpreted by the same experienced pathologist. RESULTS Among the 249 patients included in this study, 187 (75%) had a benign tumour and 62 (25%) had a malignant tumour. No complications of FNAC were observed. Cytological findings were non-contributory in 47 patients (18%). The sensitivity of FNAC for the diagnosis of malignancy was 80% with a specificity of 89.5%. Among the 11 false-negative results, lymphomas and low-grade mucoepidermoid carcinomas were the most common histological types. Among the 16 false-positive results, Warthins tumours, pleomorphic adenomas and lymphoepithelial lesions were the most common histological types. Accurate histological classification of the tumour was reported in 79.5% of cases (86% for benign tumours and 44% for malignant tumours). CONCLUSION FNAC is a reliable examination providing important information to the surgeon in the preoperative diagnostic assessment.


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2014

Sinonasal mucosal melanomas: the prognostic value of tumor classifications.

J. Michel; Audrey Perret-Court; N. Fakhry; David Braustein; S. Monestier; M.-A. Richard; Jean-Jacques Grob; Antoine Giovanni; P. Dessi

The purpose of this study was to assess the prognostic value of the 3 staging systems found in the literature for sinonasal mucosal melanomas tumors: the Ballantyne staging system modified by Prasad (Ballantyne/Prasad staging system), the American Joint Committee on Cancer (AJCC) TNM classification for mucosal melanomas (mmTNM), and the 2009 AJCC TNM classification for carcinomas of the nasal cavity and sinuses (carTNM).


International Journal of Oral and Maxillofacial Surgery | 2014

Sinonasal squamous cell carcinomas: clinical outcomes and predictive factors.

J. Michel; N. Fakhry; Julien Mancini; D. Braustein; E. Moreddu; Antoine Giovanni; P. Dessi

This was a retrospective study of 33 patients treated for sinonasal squamous cell carcinoma between 1995 and 2008. Epidemiological, clinical, histological, and therapeutic aspects of this series of patients were analysed, and their impacts on overall survival and disease-free survival established using the Kaplan-Meier method. A search for prognostic factors was made using a log-rank test. There were 27 men. The average age at diagnosis was 64.7 years. Tobacco-smoking was found to be a risk factor in 24 patients (72.7%). The median follow-up was 66 months (range 0-99 months). Tumours were classified as T1 in 18.3%, T2 in 27.3%, T3 in 6%, and T4 in 48.5% of cases. Disease-free survival rates at 1 and 5 years were 58.5% and 46.1%, respectively, and overall survival rates were 70.3% and 40%, respectively. Overall survival was correlated to tumour status (TNM, American Joint Committee on Cancer) (P = 0.010) and involvement of key structures (skull base, dura mater, brain, orbit, cavernous sinus, infratemporal fossa, skin) (P = 0.049). Surgery followed by radiotherapy improved overall survival (P = 0.005) and disease-free survival (P = 0.028) when compared to other treatment modalities. When compared to surgery alone, it improved disease-free survival (P = 0.049) regardless of tumour stage.


European Annals of Otorhinolaryngology, Head and Neck Diseases | 2011

Prognostic value of the status of resection margins after endoscopic laser cordectomy for T1a glottic carcinoma.

J. Michel; N. Fakhry; S. Duflo; Aude Lagier; Julien Mancini; P. Dessi; Antoine Giovanni

OBJECTIVES The small size of endoscopic laser cordectomy (ELC) specimens frequently leads the histopathologist to assess excision margins as pathologic. The present study sought to assess the prognostic value of margin status in terms of overall and of recurrence-free survival in a population of T1a glottic carcinoma operated on by ELC. MATERIAL AND METHODS Sixty-four records of T1a squamous-cell carcinoma treated between 1996 and 2006 were retrospectively analyzed. Overall and recurrence-free survival for the group with negative margins (group 1) and with positive margins (group 2) were analyzed following Kaplan-Meier. The influence of resection margin histologic status was assessed on Log Rank test. RESULTS Six female and 58 male patients were included. Forty (62.5%) had negative margins (group 1) and 24 (37.5%) positive margins (group 2). Overall five-year survival was 97% (95% in group 1 and 100% in group 2). Five-year recurrence-free survival was 94% (91.7% in group 1 and 95% in group 2). There was no significant difference in overall or recurrence-free survival according to resection margin histologic status. CONCLUSIONS The present results show that margins considered positive after laser resection do not significantly impact carcinologic course, while still requiring close surveillance. The most generally recommended attitude is control endoscopy with biopsy at 10 weeks.


JAMA | 2016

Effect of Bevacizumab Nasal Spray on Epistaxis Duration in Hereditary Hemorrhagic Telangectasia: A Randomized Clinical Trial

Sophie Dupuis-Girod; Alexis Ambrun; Evelyne Decullier; Anne-Emmanuelle Fargeton; Adeline Roux; Valentine Bréant; Bettina Colombet; S. Rivière; C. Cartier; Pascal Lacombe; Thierry Chinet; Sandra Blivet; Jean-Hugues Blondel; Brigitte Gilbert-Dussardier; Xavier Dufour; J. Michel; Jean-Robert Harlé; P. Dessi; Frédéric Faure

BACKGROUND Epistaxis is the most frequent and disabling manifestation of hereditary hemorrhagic telangiectasia (HHT). The efficacy of intravenous bevacizumab (an anti-vascular endothelial growth factor monoclonal antibody) for epistaxis has been shown. However, the efficacy of intranasal bevacizumab has yet to be evaluated. OBJECTIVE To evaluate the efficacy of 3 different doses of bevacizumab administered as a nasal spray in a repeated manner for the duration of nosebleeds in patients with HHT. DESIGN, SETTING, AND PARTICIPANTS Randomized, multicenter, placebo-controlled, phase 2/3 clinical trial with dose selection at an intermediate analysis and prespecified stopping rules (nonbinding stopping for futility). Patients aged 18 years or older with a diagnosis of HHT were recruited from 5 French centers from April 2014 to January 2015 with a 6-month follow-up after the end of treatment. Participants had a history of self-reported nosebleeds with a monthly duration of more than 20 minutes in at least the 3 months prior to inclusion corroborated by epistaxis grids completed during the same preinclusion period. INTERVENTIONS Eighty consecutive HHT patients were randomized and treated in the phase 2 study, with 4 parallel groups in a 1:1:1:1 ratio. One group received placebo (n = 21); the other 3 received bevacizumab nasal spray. Each bevacizumab group received a different dose of the drug (25 mg [n = 20], 50 mg [n = 20], or 75 mg [n = 19] per treatment) in 3 doses 14 days apart for a total treatment duration of 4 weeks, resulting in a total dose of 75 mg, 150 mg, and 225 mg in each treatment group. MAIN OUTCOMES AND MEASURES Mean monthly epistaxis duration for 3 consecutive months immediately after the end of the treatment. RESULTS Of the 80 patients who were randomized (mean age, 60.47 [SD, 10.61] years; 37 women [46.25%]), 75 completed the study. Mean monthly epistaxis duration measured at 3 months was not significantly different in the 59 patients receiving bevacizumab in comparison with the placebo group (P = .57) or between the bevacizumab groups. The mean monthly epistaxis duration was 259.2 minutes (95% CI, 82.1-436.3 minutes) in the 25-mg group, 244.0 minutes (95% CI, 81.8-406.2 minutes) in the 50-mg group, 215.0 minutes (95% CI, 102.8-327.2 minutes) in the 75-mg group, and 200.4 minutes (95% CI, 109.3-291.5 minutes) in the placebo group. Toxicity was low and no severe adverse events were reported. This study was terminated prior to phase 3 for treatment futility after interim analysis on the recommendations of an independent data monitoring committee. CONCLUSIONS AND RELEVANCE In patients with HHT, a bevacizumab nasal spray treatment of 3 administrations at 14-day intervals with doses of 25 mg, 50 mg, or 75 mg per spray, compared with a placebo, did not reduce monthly epistaxis duration in the 3 consecutive months immediately after the end of treatment. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT02106520.


Journal of Forensic Sciences | 2015

Determination of sex: interest of frontal sinus 3D reconstructions.

J. Michel; Arnaud Paganelli; Arthur Varoquaux; Marie-Dominique Piercecchi-Marti; Pascal Adalian; Georges Leonetti; P. Dessi

Frontal sinuses (FSs) have been studied in radiology, anthropology, and forensic anthropology. This study aimed to determine whether it was possible to predict the age and sex of an individual using FS volume. Sixty‐nine anonymized CT scans were imported to MIMICS 10.01® software (Materialise N.V.), and each FS volume was calculated in mm3. There was an absence of significant difference between right and left FS volume (p = 0.173) and an absence of correlation between age and FS volume (Pearsons test; p = 0.705). Sexual dimorphism was significantly different (p = 0.001). However, the most discriminant datum for determining sex was found to be the total FS volume (sum of an individuals right and left FS volumes) with linear discriminant Fishers function coefficients of −2.759 for the male group and −1.275 for the female group. With this model, 72.5% of our sample was correctly classified according to sex.


Clinical Otolaryngology | 2012

Screening for distant metastases before salvage surgery in patients with recurrent head and neck squamous cell carcinoma: a retrospective case series comparing thoraco‐abdominal CT, positron emission tomography and abdominal ultrasound

N. Fakhry; J. Michel; C. Colavolpe; Arthur Varoquaux; P. Dessi; Antoine Giovanni

Clin. Otolaryngol. 2012, 37, 197–206


Laryngoscope | 2013

Salvage Circular Laryngopharyngectomy and Radial Forearm Free Flap for Recurrent Hypopharyngeal Cancer

N. Fakhry; Emmanuel Chamorey; J. Michel; Charles Collet; L. Santini; Gilles Poissonnet; José Santini; P. Dessi; Antoine Giovanni; Olivier Dassonville; Alexandre Bozec

To evaluate surgical and long‐term oncologic outcomes in a series of patients who underwent circular total laryngopharyngectomy with tubed radial forearm free flap as salvage surgery.


The Journal of Clinical Endocrinology and Metabolism | 2013

Sinonasal Paraganglioma With Long-Delayed Recurrence and Metastases: Genetic and Imaging Findings

J. Michel; David Taïeb; Marianne Jolibert; Julia Torrents; Michel Wassef; Isabelle Morange; Wassim Essamet; Anne Barlier; P. Dessi; N. Fakhry

CONTEXT Sinonasal paragangliomas have rarely been reported in the literature. They are often aggressive. PATIENT We report an original case of sinonasal paragangliomas with a tumor recurrence diagnosed 13 years after resection of the primary tumor. Somatostatin receptor scintigraphy and [18F]-fluorodeoxyglucose positron emission tomography/computed tomography were the most sensitive functional imaging techniques, and they ruled out distant metastases. Interestingly, [18F]-fluorodihydroxyphenylalanine positron emission tomography/computed tomography was negative, a feature that may be considered a sign of functional dedifferentiation. Screening for germline mutations of the SDHB, SDHC, SDHD, SDHAF2, VHL, MAX, and TMEM127 was negative. CONCLUSION The diagnosis of malignancy remains challenging at initial diagnosis, and patients should be followed during their entire lifetime.


International Journal of Oral and Maxillofacial Surgery | 2013

Sinonasal adenoid cystic carcinomas: clinical outcomes and predictive factors

J. Michel; N. Fakhry; L. Santini; Julien Mancini; Antoine Giovanni; P. Dessi

This is a retrospective study of 11 patients treated for sinonasal adenoid cystic carcinomas (ACCs) between 1989 and 2008. The authors statistically analysed the epidemiological, clinical, histological and therapeutic aspects of this series of patients with sinonasal ACCs and their impact in terms of overall and disease-free survival established using the Kaplan-Meier method. A search for prognostic factors was made using a log-rank test. There were 5 women (45.4%) and 6 men (54.6%). Average age at diagnosis was 52.2 years (24-75 years). Mean follow-up of patients was 63 months (11-142 months). Tumours were classified as T1 in 9%, T2 in 45.4% and T4 in 45.4% of cases. Disease-free survival rates at 1, 5 and 10 years were 83%, 41% and 18%, respectively, and overall survival rates were 100%, 64% and 35%, respectively. Surgery followed or not by radiotherapy resulted in better survival than other treatment, regardless of tumour stage. Better disease-free survival with postoperative radiotherapy was not found. These tumours should be treated by surgical resection with clear margins followed by adjuvant radiotherapy.

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P. Dessi

Aix-Marseille University

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N. Fakhry

Aix-Marseille University

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L. Santini

Aix-Marseille University

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Julien Mancini

Aix-Marseille University

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Pascal Adalian

Aix-Marseille University

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