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Luciani A, Clement O, Halimi P, Goudot D, Portier F, Bassot V, Luciani JA, Avan P, Frija G, Bonfils P. Catheter-Related Upper Extremity Deep Venous Thrombosis in Cancer Patients: A Prospective Study Based on Doppler US. Nutr Clin Pract 2016. [DOI: 10.1177/0115426502017005324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Espinoza S, Halimi P. Interpretation pearls for MR imaging of parotid gland tumor. Eur Ann Otorhinolaryngol Head Neck Dis 2013; 130:30-5. [DOI: 10.1016/j.anorl.2011.12.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 12/20/2011] [Indexed: 01/05/2023]
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Malinvaud D, Badoual C, Rubio MT, Halimi P, Bonfils P. Extraosseous plasmacytoma of the lacrimal duct. B-ENT 2012; 8:285-288. [PMID: 23409559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
OBJECTIVE Extraosseous plasmacytoma (EOP) is a rare plasma cell proliferative disorder that commonly affects the head and neck region. We report the first case of a plasmacytoma of the lacrimal duct. METHODS A 66-year-old man presented with an isolated plasmacytoma of the right lacrimal duct and was treated surgically. RESULTS The tumour grew slowly for a few months. CT scan and MRI showed a right lateral nasal mass extending from the right lacrimal duct toward the floor of the right maxillary sinus. The lesion was removed completely by endoscopic nasal surgery. DISCUSSION EOP accounts for up to 3% of all plasma cell tumours. Management of this rare lesion involves surgery and radiotherapy with or without adjuvant chemotherapy. Guided by a literature review, we discuss the diagnostic and therapeutic management of EOP.
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Affiliation(s)
- D Malinvaud
- Department of ENT and Auditory Research Laboratory, Formation Associée Claude Bernard and CNRS UMR 8194, Hôpital Européen Georges Pompidou, Faculté de médecine Paris V, Université René Descartes, Paris, France.
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Ali D, Servagi-Vernat S, Halimi P, Berges O, Deberne M, Botti M, Giraud P. Recommandations de délinéation des organes à risque en radiothérapie ORL. Cancer Radiother 2011. [DOI: 10.1016/j.canrad.2011.07.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Malinvaud D, Halimi P, Bonfils P. Pneumosinus dilatans associated with nasal polyposis. B-ENT 2011; 7:283-287. [PMID: 22338242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
OBJECTIVE Pneumosinus dilatans (PSD) and pneumocele involve the expansion of one or more paranasal sinuses. We present the first cases of frontal PSD and pneumocele associated with nasal polyposis. We also attempt to explain the development of these rare pathologies through this unexpected association. METHODS Two cases are described. A 31-year-old man presented with chronic rhinosinusitis for many years and a left frontal protrusion. Physical examination found nasal polyposis and CT scan showed an abnormally enlarged left frontal sinus without bone destruction. The second patient was a 17-year-old man who presented with a left frontal protrusion and orbital encroachment associated with chronic rhinosinusitis. Physical examination also found nasal polyposis and CT scan showed an abnormally enlarged left frontal sinus with focal thinning of the bony sinus walls. DISCUSSION Focal or generalized thinning of the bony sinus walls differentiates pneumocele from PSD; otherwise, these two entities share the same physiopathological and clinical courses. Many explanations have been proposed for their development including increases in intra-sinus pressure, weakening of bone by tumor invasion, intracranial hypotension, spontaneous drainage of a mucocele, and congenital or hormonal causes. Yet, its physiopathology remains unknown. These two cases support the pressure mechanism of development.
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Affiliation(s)
- D Malinvaud
- Department of ENT and Auditory Research Laboratory, Formation Associée Claude Bernard and CNRS UMR 8194, Hôpital Européen Georges Pompidou, Faculté Paris V, Universitê René Descartes, Paris, France.
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Maunoury C, Halimi P. Imaging and PET-CT of head and neck cancers (in French). Clin Imaging 2009. [DOI: 10.1016/j.clinimag.2008.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Maunoury C, Halimi P. [Imaging and PET-CT of head and neck cancers]. J Radiol 2008; 89:403-412. [PMID: 18408641 DOI: 10.1016/s0221-0363(08)89017-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- C Maunoury
- Département de Physiologie et Radio-Isotopes, Hôpital Européen Georges-Pompidou, 20 rue Leblanc, Paris Cedex 15
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Medioni J, Cojocarasu O, Belcaceres JL, Halimi P, Oudard S. Complete cerebral response with sunitinib for metastatic renal cell carcinoma. Ann Oncol 2007; 18:1282-3. [PMID: 17675397 DOI: 10.1093/annonc/mdm275] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bonfils P, de Preobrajenski N, Miranda L, Halimi P, Bigorgne C, Nguyen B. L'hyperplasie oncocytaire nodulaire multifocale de la glande parotide. ACTA ACUST UNITED AC 2007; 124:76-9. [PMID: 17434137 DOI: 10.1016/j.aorl.2006.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2006] [Accepted: 09/11/2006] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Oncocytic lesions rarely affect the parotid gland, accounting for less than 1% of all salivary lesions. The WHO classification described three main types: diffuse oncocytosis, focal nodular oncocytosis hyperplasia, and oncocytoma. Multifocal nodular oncocytosis hyperplasia of the parotid gland represents an extremely rare, non-tumorous pathology of the parotid gland. MATERIAL AND METHODS We report a case of multifocal nodular oncocytosis hyperplasia of the parotid gland in a 70-year-old woman who was referred for a left preauricular mass that had gradually increased in size over the last 2 years. No lymph node of the neck was palpable. RESULTS MRI demonstrated multiple bilateral lesions of the parotid glands. Total parotidectomy, preserving the facial nerve, was performed. CONCLUSION We discuss the physiopathology and the treatment of multifocal nodular oncocytosis hyperplasia and provide a review of the literature.
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Affiliation(s)
- P Bonfils
- Service d'ORL et de Chirurgie Cervicofaciale, Hôpital Européen Georges-Pompidou (HEGP), Université Paris-Descartes, 75015 Paris, France.
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Gardner M, Valinta D, Halimi P, Plantet M, Banal A, Hans S, Housset M, Labib A. The use of MRI, CT and pet-CT in treatment planning for head and neck cancer patients: A single examination can be used both in diagnosis and volume determination. Radiother Oncol 2007. [DOI: 10.1016/s0167-8140(07)80119-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Affiliation(s)
- P Halimi
- Service de Radiologie, Hôpital Européen Georges Pompidou, Paris, France
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Halimi P. [Contribution of imaging to sleep apnea syndrome management]. Rev Mal Respir 2006; 23 Spec No 2:7S27-7S29. [PMID: 17127869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Affiliation(s)
- P Halimi
- Service de Radiologie HEGP, Service d'Explorations Fonctionnelles Respiratoires, Hôpital Pitié-Salpêtrière, Paris.
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Abstract
OBJECTIVES The study goals were to determine the patient demographics, identify predisposing factors, and determine efficacy of treatment for nonotologic osteomyelitis of the middle skull base. MATERIAL AND METHODS Symptoms and treatment of five patients (sex ratio: 3/1; mean age: 57,1 ans) with osteomyelitis of the middle skull base treated from 1991 to 2005 are analyzed. All patients with a biopsy-proven diagnosis of osteomyelitis of the skull base were retrospectively evaluated. RESULTS Four patients presented with asthenia, weight loss, headache, and fever. No patient presented with neurologic deficits associated with a destructive lesion of the osseous skull base. Three patients had an underlying immunocompromising condition (diabetes mellitus, steroid and immunosuppressor use). CT scan and MRI demonstrated central skull base abnormality, mainly at the level of the clivus. Systemic antibacterial/antifungal therapy, aggressive debridement of involved bone, and medical optimization remain important in the treatment of this group of patients. CONCLUSION The interpretation of the results is performed after an analysis of the literature.
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Affiliation(s)
- P Mordant
- Département d'ORL et de Chirurgie Cervico-Faciale, Hôpital Européen Georges Pompidou, Faculté Necker - Enfants Malades, Université René Descartes, Paris V Paris
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Abstract
The posterior wall of the sphenoid sinus is rarely implicated as a site of spontaneous cerebrospinal fluid fistula. Presented here is a case of CSF rhinorrhea of this nature, including the diagnosis workup and endoscopic approach permitting closure of the fistula.
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Affiliation(s)
- P Bonfils
- Service d'ORL et de Chirurgie Cervico-Faciale, Hôpital Européen Georges-Pompidou, Faculté de Médecine de l'Université Paris-V, 20, rue Leblanc, 75015 Paris.
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Bonfils P, de Preobrajenski N, Elouaret Y, Badoual C, Halimi P, Bigorgne C. [Granular cell tumours (Abrikossoff's tumour) of the parotid region]. Rev Laryngol Otol Rhinol (Bord) 2006; 127:183-5. [PMID: 17007194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND Granular cell tumour (Abrikossoff's tumour) was first described by Abrikossoff in 1926. These tumours are rare and usually presents as a solitary lesion, located mainly in the subcutaneous tissue of the head and neck, and in the oral cavity (tongue). CASE REPORT We report a rare case of a granular cell tumor of the parotid gland, in a 55-year old woman, who was referred with a left preauricular mass that had rapidly increased in size over 2 months. There was no cervical lymph adenopathy. RMI demonstrated a solitary lesion of the parotid gland. Surgical resection was performed. CONCLUSION We discuss the classification, pathophysiology and the treatment of granular cell tumours through a review of the literature.
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Affiliation(s)
- P Bonfils
- HEGP, Service d'Anatomo-Pathologie, Paris, France.
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Gardner M, Halimi P, Valinta D, Plantet M, Banal A, Hanss S, Housset M, Floiras J. 376 Single MRI can be used in both diagnosis and treatment planning in head and neck cancer patients. Radiother Oncol 2005. [DOI: 10.1016/s0167-8140(05)81352-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Valinta D, Gardner M, Alberini J, Plantet M, Labib A, Halimi P, Hans S. 437 Advantages of multimodality imagery in head and neck Intensity-Modulated-Radiotherapy (IMRT). Radiother Oncol 2005. [DOI: 10.1016/s0167-8140(05)81413-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Tumors of salivary glands arise mainly from the parotid gland. Magnetic Resonance Imaging (MRI) is mandatory not only to localize precisely the tumor within the gland but also to differentiate between benign and malignant neoplasms, in competition with cytology in fine-needle aspiration biopsy. Tumors without risk of transformation, such as adenolymphoma, are not systematically operated on. Indications of roentgenotherapy and irradiation volumes depend on histologic type, localisation and size of the tumor.
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Affiliation(s)
- P Halimi
- Service de radiologie, hôpital européen Georges-Pompidou, faculté de médecine Paris-V, 20, rue Leblanc, 75908 Paris cedex 15, France.
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Sigal R, Vogl T, Casselman J, Moulin G, Veillon F, Hermans R, Dubrulle F, Viala J, Bosq J, Mack M, Depondt M, Mattelaer C, Petit P, Champsaur P, Riehm S, Dadashitazehozi Y, de Jaegere T, Marchal G, Chevalier D, Lemaitre L, Kubiak C, Helmberger R, Halimi P. Lymph node metastases from head and neck squamous cell carcinoma: MR imaging with ultrasmall superparamagnetic iron oxide particles (Sinerem MR) -- results of a phase-III multicenter clinical trial. Eur Radiol 2002; 12:1104-13. [PMID: 11976854 DOI: 10.1007/s003300101130] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2001] [Revised: 08/07/2001] [Accepted: 08/14/2001] [Indexed: 11/27/2022]
Abstract
The aim of this study was to compare the clinical usefulness of ultrasmall superparamagnetic iron oxide (USPIO) MR contrast media (Sinerem, Guerbet Laboratories, Aulnay-sous-Bois, France) with precontrast MRI in the diagnosis of metastatic lymph nodes in patients with head and neck squamous cell carcinoma, using histology as gold standard. Eighty-one previously untreated patients were enrolled in a multicenter phase-III clinical trial. All patients had a noncontrast MR, a Sinerem MR, and surgery within a period of 15 days. The MR exams were analyzed both on site and by two independent radiologists (centralized readers). Correlation between histology and imaging was done per lymph node groups, and per individual lymph nodes when the short axis was > or = 10 mm. For individual lymph nodes, Sinerem MR showed a high sensitivity (> or = 88%) and specificity (> or = 77%). For lymph node groups, the sensitivity was > or = 59% and specificity > or = 81%. False-positive results were partially due to inflammatory nodes; false-negative results from the presence of undetected micrometastases. Errors of interpretation were also related to motion and/or susceptibility artifacts and problems of zone assignment. Sinerem MR had a negative predictive value (NPV) > or = 90% and a positive predictive value (PPV) > or = 51%. The specificity and PPV of Sinerem MR were better than those of precontrast MR. Precontrast MR showed an unexpectedly high sensitivity and NPV which were not increased with Sinerem MR. The potential contribution of Sinerem MR still remains limited by technical problems regarding motion and susceptibility artifacts and spatial resolution. It is also noteworthy that logistical problems, which could reduce the practical value of Sinerem MR, will be minimized in the future since Sinerem MR alone performed as good as the combination of precontrast and Sinerem MR.
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Affiliation(s)
- R Sigal
- Department of Radiology, Institut Gustave Roussy, 39, rue Camille Desmoulins, 94805 Villejuif, France.
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Bely-Toueg N, Halimi P, Laccourreye O, Laskri F, Brasnu D, Frija G. Normal laryngeal CT findings after supracricoid partial laryngectomy. AJNR Am J Neuroradiol 2001; 22:1872-80. [PMID: 11733319 PMCID: PMC7973841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
BACKGROUND AND PURPOSE Supracricoid horizontal partial laryngectomy (SCPL) is increasingly used to treat endolaryngeal carcinoma. However, few radiologic reports of these procedures exist. Our purpose was to evaluate the normal CT appearance of the neolarynx after surgery. METHODS SCPL includes cricohyoidopexy (CHP), cricohyoidoepiglottopexy (CHEP), and tracheocricohyoidoepiglottopexy (TCHEP). We examined CT scans obtained from 18 patients without local superficial recurrence who underwent SCPL: 10, CHEP; seven, CHP; and one, TCHEP. Three reference sections were used to analyze the main surgical reconstruction: an upper section through the hyoid bone, a lower section through the cricoid cartilage, and a middle section in between. The distance between the hyoid bone and cricoid cartilage was measured. RESULTS The epiglottis and valleculae were visible in the upper section in seven of 10 patients who underwent CHEP; this finding allowed distinction between CHEP and CHP. The arytenoids were depicted in 13 of 18 cases and reflected neolaryngeal shortening. The lower section showed the empty cricoid lumen lined by a thin mucosa; the anterior arch of the cricoid was amputated at TCHEP. The middle section showed the neovestibule, the lateral boundaries of which were the hypertrophic neoaryepiglottic folds; the anterior limit was the epiglottis for CHEP or the base of the tongue for CHP. The average distance between the hyoid bone and cricoid cartilage was 11 mm. CONCLUSION Normal CT anatomy of the larynx after SCPL is defined. Three key sections may accurately distinguish the various types of SCPL. CT is a valuable tool for depicting tumor recurrence, especially when the tumor is submucosal.
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Affiliation(s)
- N Bely-Toueg
- Departments of Radiology, Hospital Laennec, University of Paris, France
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Luciani A, Clement O, Halimi P, Goudot D, Portier F, Bassot V, Luciani JA, Avan P, Frija G, Bonfils P. Catheter-related upper extremity deep venous thrombosis in cancer patients: a prospective study based on Doppler US. Radiology 2001; 220:655-60. [PMID: 11526263 DOI: 10.1148/radiol.2203001181] [Citation(s) in RCA: 178] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE This prospective study extending for more than 3 years had two objectives: (a) to use Doppler ultrasonography (US) to estimate the incidence of asymptomatic catheter-related upper extremity deep venous thrombosis (DVT) in a large population and (b) to study the effect of the catheter position as an individual risk factor for catheter-related DVT. MATERIALS AND METHODS Between October 1995 and June 1998, a total of 145 patients who had oropharyngeal tract cancer and who were fitted with the same totally implantable central venous catheters (CVCs) were included in the study. Follow-up included (a) estimation of the position of each catheter tip on a chest radiograph obtained immediately after surgery and (b) regular monthly Doppler US screening for catheter-related DVT. RESULTS Seventeen patients developed catheter-related DVT; 13 of them were asymptomatic. The mean interval between CVC implantation and detection of thrombosis was 42.2 days. Correct positioning of the distal catheter tip was associated with a significantly lower rate of catheter-related DVT. Only five of 87 patients with a correctly positioned distal catheter tip (ie, either in the superior vena cava or at the junction between the right atrium and the superior vena cava) developed thrombosis, compared with 12 of 26 patients with a misplaced catheter (P <.001). The side on which the CVC was implanted did not influence the catheter-related DVT rate. CONCLUSION The rate of asymptomatic catheter-related DVT is high and could be lowered with correct initial CVC positioning.
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Affiliation(s)
- A Luciani
- Department of Radiology, Hôpital Européen Georges Pompidou, 20 rue Leblanc, 75908 Paris Cedex 15, France
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Fron D, Forgues D, Mayrargue E, Halimi P, Herbaux B. Follow-up study of severe slipped capital femoral epiphysis treated with Dunn's osteotomy. J Pediatr Orthop 2000; 20:320-5. [PMID: 10823598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This study evaluated long-term clinical and radiologic results of Dunn's osteotomy carried out in 50 consecutive cases for severe slipped capital femoral epiphysis. The results of all the patients were analyzed with 4 years 6 months of follow-up. The clinical results were very good and good in 90% of the patients and were fair or poor in 10% of the patients. Seven patients had an important complication (total necrosis or chondrolysis), and the clinical evolution was studied. Dunn's procedure seems to be adequate to correct severe slips.
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Affiliation(s)
- D Fron
- Service d'Orthopédie Pédiatrique, Hôpital Jeanne de Flandre, Lille, France.
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Halimi P, Kremer S, Chabert E. [Neuroradiology]. J Radiol 2000; 81 Suppl 1:A5-9. [PMID: 10949785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Halimi P, Bely N, Chevallier JM, Bernier P, Frija G. [Radio-anatomy of the oropharynx]. J Radiol 1999; 80:223-32. [PMID: 10209719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- P Halimi
- Servide de Radiologie, Hôpital Laennec, Paris
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Abstract
According to the committee on speech, voice, and swallowing disorders of the American Academy of Otolaryngology-Head and Neck Surgery, various surgical methods such as laryngeal framework surgery, laryngeal re-innervation, and injection laryngoplasty might be used to palliate inferior laryngeal nerve paralysis. In the present case report we document the survival and exact location of the boluses of autologous fat in one patient in whom this material was used for injection laryngoplasty.
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Affiliation(s)
- O Laccourreye
- Department of Otorhinolaryngology-Head & Neck Surgery, Laënnec hospital, APHP, université Paris V, Paris, France. ollivier
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de Kerviler E, Cuenod CA, Clément O, Halimi P, Frija G, Frija J. [What is bright on T1 MRI scans?]. J Radiol 1998; 79:117-26. [PMID: 9757228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
The list of entities associated with a high signal intensity on T1-weighted images is extensive and classically includes fat, proteins, hemorrhage, melanin and gadolinium. However, additional entities may be responsible for abnormally high signal intensity on T1-weighted images. These include ion deposition in metabolic disorders, free radicals, increased proton density, flow phenomena, some artifacts, and new contrast agents. The aim of this article is to display both the common and uncommon causes for a high T1 signal intensity and to discuss the underlying mechanisms or attributable pathophysiology for this phenomenon.
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Bely N, Zanoun M, Laccourreye O, Halimi P. [Radiological surveillance of operated ethmoidal cancers. Practical points]. Neurochirurgie 1997; 43:76-84. [PMID: 9296049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Radiological follow-up of ethmoidal neoplasms is not clearly established in terms of imaging modalities (CT, MRI) or periodicity. This paper, based on 4 typical cases, tries to describe the main imaging features of this radiological follow-up. Initial CT 3 to 6 months after surgery is essential, being the reference examination. It can show postoperative bone changes. During follow-up, a CT scanner every 6 months seems sufficient. For the image interpretation, a comparison with the two previous CT is mandatory. Any bone destruction must be considered as suspicious, even if very small. MRI should be performed in case of sphenoidal opacity, in order to differentiate between tumor recurrence and retentional fluid. MRI is also necessary and useful when the tumor presents an intradural or intracranial extension.
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Affiliation(s)
- N Bely
- Service de Radiologie, Hôpital Laennec, Paris
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Halimi P, Guedj P. A simple method of assessing neurologic motor power of patients during carotid endarterectomy. J Clin Anesth 1997; 9:431. [PMID: 9257214 DOI: 10.1016/s0952-8180(97)00077-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Affiliation(s)
- V Jouffre
- Department of Otorhinolaryngology-Head and Neck Surgery, Laënnec Hospital, University Paris V, France
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de Kerviler E, Bely N, Laccourreye O, Clément O, Halimi P, Frija G. The aryepiglottic fold as a rare location of adenoid cystic carcinoma. AJNR Am J Neuroradiol 1995; 16:1375-7. [PMID: 7677046 PMCID: PMC8337823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We report one case of a mass in the aryepiglottic fold seen on CT, which proved to be an adenoid cystic carcinoma. There was nothing specific about the imaging characteristics that would allow it to be confidentially differentiated from squamous cell carcinoma.
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Affiliation(s)
- E de Kerviler
- Department of Radiology, Boucicaut Hospital, Paris, France
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34
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Affiliation(s)
- O Laccourreye
- Department of Otolaryngology-Head and Neck Surgery, Laënnec Hospital, University of Paris, France
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35
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Abstract
Complications during jet ventilation for microlaryngoscopy, which is usually a relatively safe procedure, are rare. Those described have included hypoventilation, pneumothorax, pneumomediastinum, subcutaneous emphysema, pneumoperitoneum, and gastric distention. We describe herein a case of a life-threatening complication during jet ventilation with a Carden's tube that ended in laparotomy.
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Affiliation(s)
- I Braverman
- Department of Otolaryngology-Head and Neck Surgery, Hadassah University Hospital, Jerusalem, Israel
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36
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Sonier CB, De Kersaint-Gilly A, Resche F, Halimi P, Bouyssou A, Bricout JH. [The value of magnetic resonance imaging in the diagnosis of spinal cord hemangioblastoma. Apropos of 12 cases]. J Neuroradiol 1994; 21:194-204. [PMID: 9190372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This study concerned a series of 12 patients, 4 of whom had Von Hippel-Lindau disease. Six of these patients were explored by myelography, 6 by spinal cord angiography, 8 by CT scan with contrast injection and 12 by MRI, with gadolinium injection in 8. MRI proved to be the choice examination for the diagnosis of spinal cord tumor, but gadolinium injection was necessary since it made it possible to detect the tumoral bud and its intense enhancement. The absence of gadolinium injection led us to an erroneous initial diagnosis of syringomyelia in two patients and glioma in one. Sagittal sections made it easier to evaluate the tumoral extension in patients with evidence or suspicion of Von Hippel-Lindau disease. Arteriography was indicated, as it provided a preoperative map and diagnosed punctiform lesions.
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Affiliation(s)
- C B Sonier
- Hospital G et R Laënnec, Neuroradiologie, Nantes
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37
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Halimi P, Kadari A, Dayan M, Nyman D, Braverman I, Sichel JY. Gastric bleeding complicating esophageal intubation with a Carden's tube. J Clin Anesth 1994; 6:168-9. [PMID: 8204241 DOI: 10.1016/0952-8180(94)90026-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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38
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Abstract
OBJECTIVE Our goal was to assess medullary lesions in patients suffering from chronic progressive radiation myelopathy (CPRM) using MRI. MATERIALS AND METHODS In a group of 10 patients suffering from CPRM, MRI findings (11 examinations), radiation protocols, and patient prognoses were reviewed. RESULTS A cord enlargement was demonstrated in five cases, whereas four cases presented with medullary atrophy. As demonstrated by MRI, radiation-induced medullary lesions progressed toward cord atrophy in one patient. When MRI and/or comparison myelogram were performed within 8 months following the onset of the myelopathy, a cord enlargement was usually encountered. When the patient was evaluated > 8 months after the first neurological symptoms, a cord atrophy was always demonstrated. Medullary lesions extended beyond the boundaries of the radiation field in 67% of the cases. However, with the exception of one case, the main focus of the cord damage was included within an irradiated cord segment. An enlarged cord was often associated with a neurologic deterioration and a fatal outcome. In patients with cord atrophy, the neurologic deficit was often static and survival rates were better. CONCLUSION These results suggest a revision of classic criteria used for the diagnosis of CPRM. By demonstrating cord lesions, MRI helps to establish disease prognosis.
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Affiliation(s)
- P S Melki
- Service de Radiologie, Hôpital Necker, Paris, France
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39
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Thibault F, Halimi P, Bely N, Chevallier JM, Bonfils P, Lellouch-Tubiana A, Frija G. Internal architecture of the parotid gland at MR imaging: facial nerve or ductal system? Radiology 1993; 188:701-4; discussion 705. [PMID: 8351336 DOI: 10.1148/radiology.188.3.8351336] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A radiologic-anatomic study was performed to determine the nature of the low-signal-intensity curvilinear structures currently seen in the normal parotid gland on axial T1-weighted magnetic resonance (MR) images. These structures are considered by some to represent the intraparotid facial nerve. After cannulation of the Stensen duct, the authors imaged the parotid gland of two cadavers in situ before and after intraductal injection of gadolinium tetrazacyclododecanetetraacetic acid. Retrograde filling was obtained in one gland. The same sections were used throughout a subsequent anatomic study, allowing correlation of the MR findings with the macroscopic and histologic appearance of the gland. Comparison of MR images and gross and histologic sections established that two intraparotid facial nerve segments, although identified from the histologic study, were not visible on corresponding MR images. Many areas of low signal intensity seen within the gland were found to represent the main duct and some afferent ductal branches.
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Affiliation(s)
- F Thibault
- Department of Radiology, Hopital Boucicaut, Paris, France
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40
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Carlier R, Monnet O, Idir AB, Halimi P, Simon P, Bouchard P, Schaison G, Doyon D. [Ante- and posthypophyseal insufficiency with infundibulum abnormalities]. J Radiol 1991; 72:437-43. [PMID: 1920262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The hypopituitarism and the diabetes insipidus are often idiopathic. A retrospective study of 6 cases of diabetes insipidus and 8 cases of partial or total idiopathic antehypophyseal insufficiency has shown the value of MRI to demonstrate anomalies of the infundibulum or hypothalamic-hypophysis "stages". MRI allows to bring together some cases of idiopathic hypopituitarism in a new entity which is the hypopituitarism due to a newborn section of the infundibulum.
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Affiliation(s)
- R Carlier
- Service de Neuroradiologie, Centre Hospitalier Universitaire Bicêtre, Kremlin-Bicêtre
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41
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Caillet H, Delvalle A, Doyon D, Sigal R, Francke JP, Halimi P, Bely N. [The normal cranial nerves in MRI. Description and visualization frequency]. J Radiol 1991; 72:69-78. [PMID: 2056476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In order to assess the value of MR in the depiction of intracranial nerves, we retrospectively reviewed 60 patients investigated over a period of 2 years. The aim of this study was: 1) to assess the score of MR in the detection of cranial nerves III to XII; 2) to determine accurate landmarks allowing for easy detection of those cranial nerves. Cranial nerves III, V, VII, VIII are well seen (70 to 100%), very often in both axial, sagittal and coronal sections. Nerves IX to XII are correctly studied only on axial planes [81 and 83%), but it is difficult to distinguish between the vagal nerve and the glossopharyngeal and spinal nerves. Due to their oblique direction and small size, fourth and sixth nerves are rarely visualized. The more important landmarks are the chiasma, the colliculi, the Meckel's cave, the internal auditory canal, the jugular foramen, the hypoglossal canal and the different brainstem structures. We suggest the following scanning protocol: short spin echo sequences (TR = 600 ms, TE = 20 msec), 3 to 5 continuous sections, 16 to 20 cm field of vue with respectively 4 or 2 excitations, 256 x 256 matrix, with at least one acquisition plane (axial), but preferably two or three planes. Thus MR is sensitive exam in the recognition of cranial nerves, and it must be the first step exam in patients presenting with cranial nerve disease.
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Affiliation(s)
- H Caillet
- Service de Neuroradiologie, Hôpital Bicêtre
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42
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Sigal R, Denys A, Halimi P, Shapeero L, Doyon D, Boudghène F. Ventriculus terminalis of the conus medullaris: MR imaging in four patients with congenital dilatation. AJNR Am J Neuroradiol 1991; 12:733-7. [PMID: 1882755 PMCID: PMC8331601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
MR findings in four patients with MR evidence of congenital cystic dilatation of the ventriculus terminalis were reviewed retrospectively. The ventriculus terminalis is a small cavity of the conus medullaris that forms during embryonic development as result of canalization and retrogressive differentiation. The dilated ventriculus terminalis appears on MR images as a small ovoid cavity with regular margination; intralesional fluid resembles cerebrospinal fluid on all MR sequences. After injection of contrast material, MR imaging shows no enhancement of the cyst or its wall, and thus differentiates congenital dilatation of the ventriculus terminalis from cystic tumors, which occur more frequently in this region.
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Affiliation(s)
- R Sigal
- Department of Radiology, Institut Gustave Roussy, Villejuif, France
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43
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Halimi P, Camps J, Roche M, Proust JP. [Physico-chemical properties of 4 endodontic sealing cements]. Rev Fr Endod 1990; 9:35-42. [PMID: 2077577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Four endodontic sealers were compared with two series of tests, in thin layer and in 10 mm long and 5 mm diameter rods. Under these conditions, the Pulp Canal Sealer showed the best ability to present a thin layer and the same flow than the Cortisomol. Its setting time was 15 minutes. Forty-eight hours later, the Sealite showed a very good tightness compared to the other sealers. At 30 days, the Pulp Canal Sealer and the OZn-Eugénol were the tightest ones. Less water was absorbed with the Cortisomal and the Sealite. Is there, for these sealers, any correlation between water-absorbtion and tightness?
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44
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Halimi P, Gozal Y, Cohen M, Gozal D. [Computerized electroencephalographic monitoring in anesthesia]. Cah Anesthesiol 1990; 38:309-17. [PMID: 2285867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The computerized electroencephalogram monitor provides a simple interpretation of the standard EEG trend. In the operating room, this compact EEG monitor is convenient and the trend is easy to read for a non-specialist user. EEG monitoring is especially indicated in carotid endarterectomy for the detection of ischemic event during surgery. The use of this monitor should be recommended for high risk patients (cardiac surgery, cerebral aneurysm surgery, controlled hypotension) to determine the adequate depth of anesthesia and to perform a stress-free anesthesia when the anesthetic drug is given by titration according to the decrease in the awakening electrical cerebral activity.
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Affiliation(s)
- P Halimi
- Service d'anesthésie-réanimation, Hôpital universitaire Hadassah, Ein Karem, Jérusalem, Israël
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45
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Abstract
The clinical and magnetic resonance (MR) imaging findings in 20 patients with MR evidence of occult cerebrovascular malformations (OCVMs) were retrospectively analyzed. Of 27 lesions followed up throughout a mean period of 18 months, eight showed obvious evolution on MR images (four cases of regression and four cases of new bleeding). Three new independent lesions were disclosed. Clinical evolution was discordant with MR findings in five patients. In the other patients, topography of the lesion, mass effect, and location of the hemorrhage could explain clinical data. The dynamic nature of OCVMs must be considered in decisions on therapeutic management.
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Affiliation(s)
- R Sigal
- Department of Neuroradiology/CIERM, Bicêtre Hospital, Le Kremlin Bicêtre, France
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46
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Laissy JP, Schouman-Claeys E, Lacombe P, Dupont JY, Halimi P, Frija G. Value and limits of arthrography in the study of pathological mediopatellar plicae of the knee; a comparison with arthroscopy. Eur J Radiol 1990; 11:93-7. [PMID: 2253645 DOI: 10.1016/0720-048x(90)90155-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The results from arthroscopy and arthrography were compared in a prospective study of the mediopatellar plicae in 100 knees with internal disorders. With reference to arthroscopy, the sensitivity and specificity of arthrography for the detection of mediopatellar plicae were, respectively, 83.6 and 88.8%. The arthrographic signs of pathological plicae were: a thick plica, thicker than the internal condylar cartilage (sensitivity: 72%; specificity: 84%) and an interposed plica (sensitivity: 85%; specificity: 81.8%). Statistically the arthrographic signs agreed with the arthroscopic signs. The two methods did not differ significantly in their contribution to the diagnosis of pathological plicae.
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Affiliation(s)
- J P Laissy
- Département de Radiologie C.H.U. Paris Ouest, France
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47
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Abstract
A case of cystic schwannoma that presented as an intraaxial lesion on CT is reported. Magnetic resonance was able to detect the extraaxial origin of the tumor.
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Affiliation(s)
- R Sigal
- Department of Radiology/CIERM, Bicêtre Hospital, South Paris University, Le Kremlin Bicêtre, France
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48
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Sidi A, Halimi P, Cotev S. Estimating anesthetic depth by electroencephalography during anesthetic induction and intubation in patients undergoing cardiac surgery. J Clin Anesth 1990; 2:101-7. [PMID: 2189448 DOI: 10.1016/0952-8180(90)90062-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Intravenous (IV) anesthesia titrated to continuous computer-processed electroencephalograms (EEGs) was studied in 32 consecutive patients undergoing cardiac surgery. Anesthesia was induced with fentanyl 50 micrograms/kg with no EEG monitoring (n = 16) or 25 to 50 micrograms depending on changes in EEG (n = 16). EEG, oxygen saturation by pulse oximeter, intra-arterial blood pressure (BP), central venous pressure (CVP), and pulmonary artery pressure (PAP) (n = 18) were monitored continuously. Cardiac output (CO), CVP, PAP, spectral-edge frequency for each hemisphere, and BP were recorded before induction, immediately before intubation, and 1 and 5 minutes after intubation. With EEG monitoring, intubation was performed when spectral-edge frequency decreased to 10 Hz or less. Recall and pain were investigated 2 to 12 weeks postoperatively. With EEG, the amount of fentanyl used before intubation was significantly lower (39.7 +/- 2 micrograms/kg; p less than 0.005) than without EEG (50 micrograms/kg). The decrease in BP (% change) was less with than without EEG; mean changes in BP between preinduction and preintubation were -7.4% +/- 3.8% and -16.5% +/- 3.1% and between preinduction and 1 minute after intubation 0.3% +/- 3.4% and -12.5% +/- 3.5%, respectively. Percent changes in mean BP between intubation and 1 minute after were 9.6% +/- 4.0% with EEG and 5.2% +/- 3.0% without EEG. No patient in either group had recall. The authors conclude that using EEG monitoring to estimate depth of anesthesia during induction and laryngoscopy may increase safety in high-risk patients undergoing cardiac surgery.
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Affiliation(s)
- A Sidi
- Hadassah University Hospital, Jerusalem
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49
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Doyon D, Chan KY, Attia M, Halimi P, Sigal R, Corlieu P, Bobin S. Magnetic resonance investigations of non-acoustic petrous lesions. Arch Otorhinolaryngol 1989; 246:265-8. [PMID: 2590031 DOI: 10.1007/bf00463570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Twenty cases of intrapetrous lesions were studied by a 1.5 T magnetic resonance (MR) unit. In all cases, comparisons were made between MR, CT and clinical findings. Our present material included 9 cholesteatomas, 1 cholesterol cyst, 3 primary epidermoid carcinomas, 2 metastatic neoplasms, 1 glomus jugulare tumor and 4 facial neurinomas. Gadolinium was injected in 7 cases and seemed to be the best method for studying the intrapetrous tumors. MR permitted accurate topographic study and assessment of tumoral extension, as well as a ready demonstration of tumor vascularity. The present findings also showed that MR is not capable of defining small bony detail or calcifications.
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Affiliation(s)
- D Doyon
- CIERM, Department of Radiology, Bicêtre Hospital, South Paris University, France
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50
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Halimi P, Sigal R, Doyon D, David P. [Diagnosis of diseases of the spinal cord and the vertebral column]. Rev Prat 1989; 39:751-7. [PMID: 2660237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Magnetic resonance imaging (MRI) nowadays plays a predominant role in the diagnosis and evaluation of spinal canal pathologies and has reduced the other exploratory methods, including computerized tomography (CT) and myelography, to an ancillary role. These pathologies are divided into three groups: those where MRI is the only imaging method (syringomyelia, tumours in the spinal canal, phakomatoses, external pachymeningitis, spinal cord injuries, myelitis); those where MRI is the initial method and is completed by other examinations (vascular malformations, dysraphism, myelopathies due to cervical osteoarthritis) and those where MRI still play a lesser role than CT (degenerative lesions of the lumbar column).
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