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Biofilms are communities of bacteria embedded in a self-produced glycocalyx matrix. Adenoids have been shown to harbor bacterial biofilms. Aim/objectives: To compare the prevalence of biofilms in adenoid of children with chronic otitis media (COM) (group1) versus a control group without any COM (group 2) having adenoids removed because of hypertrophy.One hundred and three children were prospectively enrolled in this case-control study, group 1 (n = 52) and group 2 (n = 51). The main outcome measurement was the prevalence of biofilm in adenoidectomy specimens analyzed using confocal laser scanning microscopy. Children in group 1 who had middle ear (ME) effusion and requiring the insertion of a tympanostomy tube underwent biopsy of the ME mucosa and effusion sampling.Biofilms were found in adenoids' specimens of both groups and in the ME biopsy and effusion. The biofilm prevalence in adenoids was 63.5% (33/52) in group 1 and 47.1% (24/51) in group 2. Day nursery and previous antibiotics intake were significantly more frequent in group 1 than in group 2.This case-control study demonstrates that adenoid tissue in children with COM contains more mucosal biofilms than adenoid tissue removed for hypertrophy. Biofilm was seen in ME biopsies and effusion.

Background: We previously described that adenoid tissue in children with chronic otitis media (COM) contained more mucosal biofilms than adenoid tissue removed for hypertrophy.Aims/objectives: The aim of the second part was to characterize nasopharyngeal microbiota and explore virulence of the most common middle ear pathogens.Material and methods: Bacteriological analysis was performed following a culture-based approach on the samples recovered from 30 patients of COM group (15 biofilm-positive and 15 biofilm-negative) and from 30 patients of a control group (15 biofilm-positive and 15 biofilm-negative). Virulence factors of Streptococcus pneumoniae, Streptococcus pyogenes, and Haemophilus influenzae were investigated.Results: The most frequent species were Firmicutes followed by Proteobacteria and Actinobacteria. The presence of biofilm was statistically associated with an increase of the number of bacterial species and Firmicutes phylum regardless of the condition (case/control). No virulence factors associated with invasive isolates were found for the most common middle ear pathogens.Conclusions and significance: This case-control study demonstrated that the presence of COM plus biofilm was associated with a given microbiota which contained more Firmicutes. Our study allows a better understanding of physiopathological mechanisms involved in chronic otitis media and paves the way for further investigations.

Objective Skull base osteomyelitis (SBO) is a rare but life-threatening disease observed in elderly diabetic patients, with high risk of recurrence and difficult therapeutic management. The diagnosis is ascertained from a set of clinical, biological, and imaging findings. CT and MRI allow initial diagnosis, but are not accurate to affirm healing at the end of therapy. 99mTc-HMPAO-Leucocyte Scintigraphy (LS) is highly sensitive and specific for the detection of infection. The aim of this study was to evaluate LS i) for initial diagnosis, and ii) to confirm healing at the end of antibiotherapy in SBO. Study design We retrospectively reviewed from November 2011 to September 2015 all patients with confirmed SBO who underwent LS twice, at diagnosis and at the end of antibiotic therapy in our nuclear medicine department (n = 27). Methods Clinical, biological, CT, LS, and follow-up data were recorded in all patients. LS images (planar and tomographic performed 4 hours and 24 hours after intravenous injection of autologous Tc-99m-HMPAO-leucocytes) were visually assessed and quantified. Results At initial diagnosis, 25 of 27 patients had a positive LS. At the end of antibiotic therapy (3 ± 1 months duration), 26 of 27 patients had a negative LS. During subsequent follow-up (= or >6 months), the disease recurred in four patients including three with a negative postantibiotherapy LS scan. Conclusion In this retrospective study, LS was powerful for initial diagnostic of SBO and for healing assessment at the end of antibiotic therapy. We conclude it is a useful technique for therapeutic monitoring of SBO. Level of Evidence 4.

Background Lateral sinus stenosis is a little-known cause for pulsatile tinnitus (PT). In several small series, stenting has been described as an effective treatment for disabling PT linked with this type of stenosis. Objectives To describe the clinical, radiological, and manometric characteristics of patients treated for disabling PT by lateral sinus stenosis. Assessment of the efficacy of stenting for this indication. Methods Retrospective study of patients treated for isolated PT by stenting of a lateral sinus stenosis in our institution, between 2009 and 2015. Results Fourteen patients were included in our study. All of them were women. The median age at the onset of symptoms was 39.0 (21.0) years. The median body mass index was 28.5 (7.0) kg/m 2 . Stenting of the lateral sinus led to the disappearance of PT without recurrence in 13 patients. In one patient, stenting did not modify the noise. In this case, another cause of PT was diagnosed after stent placement. Conclusion Lateral sinus stenosis is a curable cause of venous PT. Other causes of PT must be ruled out before an endovascular treatment is undertaken, due to the frequent asymptomatic nature of Pacchioni granulations in the lateral sinus. Treatment by stenting is effective in all cases, provided that stenosis underlies the PT.

Evaluation of endoscopic ethmoidectomy performed as a day-case in terms of security, quality, and satisfaction of the patient. This prospective observatory bi-centric study over 1 year included 74 patients undergoing an ethmoidectomy respecting the eligibility criteria of ambulatory care. We recorded patients' demographic data, operative details, satisfaction, postoperative course, and follow-up results. Nasal symptoms were evaluated by SNOT-22 on preoperative appointment and postoperatively at D30. No non-absorbable nasal packing was used, eventually in the case of preoperative-bleeding absorbable gelatine packing. The postoperative follow-up took place at D1 by phone call and at D10 and D30 to assess complications, Visual Analogue Scale, and state of ethmoidal corridors by endoscopic exam. Patients benefited of bilateral ethmoidectomy in 82.4 % cases associated with septoplasty in 42 %. The majority (95 %) was discharged on the same day. Only one patient had bleeding at D0 and was kept in standard hospitalization, such as three other patients for medical or organizational reasons not related to surgery. At D1, 23 % described postoperative light bleeding but needed no revisit and pain was estimated at 1.3 (VAS). No readmission was observed, and no major complication was noted. SNOT-22 decreased successfully by 56 %, statistically related to postoperative treatment of corticosteroids and in the case of Samter triad. 97 % of patients were satisfied of the ambulatory care. These results suggest that within an experienced and dedicated day-case medical and paramedical team, ethmoidectomy can be safely performed on a day-case basis with high quality of taking care and satisfaction of patients.

Rhino-sinusal infections are serious diseases and possibly lethal. When they are invasive, we easily discuss apergilloses and mucormycoses. The confirmation of the diagnosis of mucormycosis need an extensive surgery for precise histopathological and mycological evaluation. The pathologist may be faced to other rare mycoses such as phaeohyphomycoses, which present different morphological features than mucormycoses and Aspergillus. Once the diagnosis is established, an appropriate antifungal treatment is quickly started. The aim of our work is to report two observations of phaeohyphomycoses, to describe their histopathological features, to discuss complementary diagnostic methods and to present the main differential diagnoses.

Objectif L’osteomyelite de la base du crâne (OBC) est une maladie rare mais qui menace le pronostic vital, observee chez les patients diabetiques âges avec un risque eleve de recidive et une gestion therapeutique difficile. Les modalites d’imagerie morphologique (scanner et IRM) sont utiles pour le diagnostic, mais pas pour l’evaluation de la reponse therapeutique. Certaines etudes ont mis en evidence l’utilite de la scintigraphie aux leucocytes radiomarques (LS) pour le diagnostic initial et l’evaluation de la reponse au traitement dans les OBC. La TEP/TDM au 18F-FDG (TEP-FDG) est une autre modalite d’imagerie fonctionnelle tres sensible pour la detection de l’inflammation et de l’infection, avec une meilleure resolution spatiale que la LS, mais n’a jamais ete evaluee dans l’OBC. Le but de cette etude etait de comparer la TEP-FDG et la LS pour le diagnostic initial et la confirmation de la guerison dans l’OBC. Design de l’etude Nous avons inclus retrospectivement, de fevrier 2014 a octobre 2016, tous les patients (n = 12) atteints d’OBC confirmee (osteolyse sur la TDM) ayant eu une LS et une TEP-FDG a 2 reprises : lors du diagnostic initial et apres six semaines d’antibiotherapie. Tous les patients ont ete suivis au moins 17 mois apres la fin de l’antibiotherapie. Methodes Les donnees cliniques, biologiques, TDM, LS, TEP-FDG et de suivi ont ete recueillies. Les images LS (planaires et TEMP/TDM realisees 4 h et 24 h apres injection intraveineuse de leucocytes-Tc-99m-HMPAO autologues) et les images TEP-FDG ont ete interpretees visuellement et quantifiees. Les variables quantitatives ont ete SUVmax pour la TEP-FDG et le rapport d’activite entre la lesion et le tissu sain controlateral (L/NL) pour la LS. Resultats Un patient avait des donnees de suivi manquantes et a ete exclu. Lors du diagnostic initial, la LS et la TEP-FDG etaient positives chez 10/11 et 11/11 patients respectivement (L/NL : 3,84 ± 0,90 ; SUVmax : 6,03 ± 2,93). Apres 6 semaines d’antibiotherapie, selon les donnees de suivi ulterieur, 6/11 patients etaient gueris. Parmi les patients gueris, 6/6 avaient une seconde LS negative et 4/6 avaient une seconde TEP-FDG faussement positive (SUVmax : 4,37 ± 3,6). Pour les patients non gueris apres 6 semaines d’antibiotherapie, la seconde LS etait positive pour 4/5 d’entre eux (L/NL : 2,23 ± 0,96) et la TEP-FDG etait positive chez 5/5 patients (SUVmax : 6,65 ± 3,76). Au total, dans les OBC, la scintigraphie aux leucocytes marques apparait plus performante que la TEP-FDG pour confirmer ou infirmer la guerison apres 6 semaines de traitement.

International audience; Rhino-sinusal infections are serious diseases and possibly lethal. When they are invasive, we easily discuss apergilloses and mucormycoses. The confirmation of the diagnosis of mucormycosis need an extensive surgery for precise histopathological and mycological evaluation. The pathologist may be faced to other rare mycoses such as phaeohyphomycoses, which present different morphological features than mucormycoses and Aspergillus. Once the diagnosis is established, an appropriate antifungal treatment is quickly started. The aim of our work is to report two observations of phaeohyphomycoses, to describe their histopathological features, to discuss complementary diagnostic methods and to present the main differential diagnoses.

Background Septic cavernous sinus thrombosis (SCST) is a rare but severe complication of acute bacterial sinusitis. Evaluations of advances in imaging techniques as well as in medical and surgical treatment are hampered by the lack of recent studies. Objective We aim to report our experience in the management of SCST in patients with acute bacterial sphenoid sinusitis over the past 10 years and to discuss the initial work-up and treatment strategies. Methods We performed a retrospective study of patients admitted for SCST related to acute sinusitis at a tertiary care center between 2003 and 2013. Clinical charts were reviewed for demographics, clinical presentations, imaging and microbiologic findings, medical and surgical treatments, and outcomes. Results Seven patients were treated for SCST. Sphenoid sinus was involved in all cases. The most frequent presenting signs included headache (100%), cranial nerve impairment (86%), fever (71%), and orbital symptoms (71%). Diagnosis was confirmed by a cerebral contrast-enhanced CT scan in all cases. Four patients (57%) had an additional intracranial complication. The average time between clinical onset and diagnosis was 13.7 days. All patients were treated by high-dose i.v. antibiotics, anticoagulation therapy, and surgical endoscopic drainage of the infected sinuses. This treatment strategy resulted in a mortality rate of 0%, but four out of the seven patients developed transient or permanent neurologic deficits, including one with permanent unilateral visual loss. Conclusion The combination of high-dose i.v. antibiotics, anticoagulation therapy, and endoscopic drainage of the infected paranasal sinus is an effective strategy for the treatment of SCST, but long-term sequelae remain frequent.