Hearing loss and headache revealing lateral sinus thrombosis in a patient with factor V Leiden mutation.
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Adult↗
Biomedical subjects
K Marsot-Dupuch
Publications and source records attributed to K Marsot-Dupuch.
[Imaging of ORL diseases in acquired immunodeficiency syndrome].
More than 50% of patients with acquired immunodeficiency syndrome (AIDS) present a lesion affecting parotid gland, lymph nodes, paranasal sinuses, pharyngo-larynx or temporal bone. In about 20% out of cases affected patients present different head and neck lesions at the time of evaluation. Most often, clinical examination and endoscopy are sufficient to perform diagnosis and to manage the disease. Imaging studies (CT or MRI) are indicated when the nature of the disease is unknown or when a map of the process is mandatory for therapeutic approach. Some imaging features are strongly suggestive of HIV infection: parotid cysts associated with hyperplasia of the nasopharynx and cervical lymph nodes enlargement; labyrinthitis and multinevritis; and head and neck squamous cell carcinomas in non alcoolo-tobacco addicted patients. Such diseases suggest the need for knowledge of the patient's seropositivity status.
Acquired Immunodeficiency Syndrome↗
[Persistent facial paralysis: contribution of imaging to identification of perineural infiltrating tumor].
To describe imaging features suggestive of retrograde perineural spread in progressive facial palsy without known tumoral origin. Two reports of perineural infiltration by salivary malignant tumors were diagnosed on abnormal enhancement of the facial nerve associated with an abnormal nerve enlargement (1/2). These unsuspected tumors were located in parotid gland (1/2) and the sub-maxillary gland (1/2). ENT tumors (especially adenoid cystic carcinomas) should be carefully searched in case of perineural spread, as these tumors may be misdiagnosed due to their size, location and signal. Therefore, imaging studies of facial palsy should include temporal bone, skull base, parotid gland, submaxillary gland and sub cutaneous areas of the face. A sub-maxillary gland tumor should be searched in case of facial palsy associated with glossodynia.
Carcinoma, Adenoid Cystic↗
Magnetic resonance imaging assessment of labyrinthine pathology.
Membranous labyrinth pathologies are quite rare. They were until recently difficult to demonstrate by imaging technics, CT being the modality of choice. Our purpose was to stress the interest of MR examination for investigating patients complaining of vertigo, tinnitus, and profound sensorineural hearing loss. Normal anatomy as well as the main pathologically encountered changes are illustrated.
Ear Diseases↗
Rhinoscleroma with orbital extension: CT and MRI.
We describe the MRI features of a rhinoscleroma with orbital extension. This benign bacterial and granulomatous lesion of the paranasal sinuses gave homogeneous low intensity on T2-weighted images and enhanced with gadolinium. It could simulate a malignant sinonasal tumour or a fungal sinusitis; the diagnosis must be considered in patients from endemic areas.
Adult↗
[Cerebral arteritis in AIDS. Demonstration with MRA in 2 patients].
Two cases of cerebral arteritis related to varicella-zoster virus in seropositive patients are presented. Diagnosis of arteritis was made by conventional angiography. However, 3D Time of Flight MR Angiography demonstrated an excellent sensitivity in detection of cerebral arterial stenosis located at the skull base.
AIDS-Related Opportunistic Infections↗
Imaging of the vestibule.
PURPOSE: State-of-the-art imaging of the normal and pathologic vestibule. METHODS AND MATERIAL: This study is based on the experience of three French imaging centers (Val de Grâce, Bégin, and Saint-Antoine hospitals) working with 1- and 1.5-tesla magnetic resonance units and high-resolution computed tomography, and it includes a review of the literature. Computed tomography is performed with a high-resolution program, matrix 512 x 512, field of view 9.6 cm, joined 1-mm section, overlapped sections every 0.5 mm, axial and coronal sections, or reformatted images. High-resolution magnetic resonance imaging (matrix 512 x 384), field of view 18 cm, is used with fast T2-weighted sequences (sections 3 or 2 mm thick, constructive interference in steady state, T2-weighted gradient echo sequence three-dimensional Fourier transformation). A joined section of 0.7 mm in any direction is obtained if necessary. Superimposition of computed tomography and magnetic resonance imaging with a stereotactic technique by identification of identical anatomic points is sometimes used. RESULTS: We review the interest and place of computed tomography and magnetic resonance imaging in the diseases of the labyrinth and internal auditory canal related to abnormal vestibular functions: inflammatory labyrinthitis, vestibular hemorrhages, sclerosing and ossifying labyrinthitis, traumatism, malformations, perilymphatic fistulas, otosclerosis, tumors, cochleovestibular neuritis, and hydrops of the endolymphatic system.
Humans↗
[Mucormycosis: an uncommon case of cellulitis of the face and multiple facial lymphadenopathies].
An unusual case of mucormycosis is presented: a cutaneous form characterized by an extension to the soft tissues of the face with a noticeable involvement of facial lymph nodes. The successive CT studies enable the description of the lesions and their follow-up.
Cellulitis↗
[Congenital neck masses. Embryonic origin and diagnosis. Report of the CIREOL].
Various congenital cervical anomalies are found in the neck region including defects of the branchial apparatus (branchial, thymic and parathyroid anomalies) and vascular anomalies. They manifest as cystic masses, sinuses, fistulas and as ectopic glands. This multicentric retrospective imaging study done in 5 different radiological centers (4 adult radiological departments and 1 pediatric radiological department) shows the result in understanding the congenital cervical anomalies and include 63 patients. The age of the patients varied between 24 days-81 years with a mean age of 23 years. This study included 27 patients having congenital branchial pouch anomalies (4 cases of anomalies of obliteration of the 4 th arch), 14 cases of cervical cystic hygromas, 11 thyroglossal tract cyst cases, 1 congenital laryngocele case, 1 case of jugular ectasia, 3 cases of capillary haemangioma. The embryologic basis of these different malformations were reviewed. Their characteristic findings and sites were illustrated together with their typical et atypical appearances. The frequency of occurrence of each branchial anomaly were plotted, the second branchial cleft cyst being by far the most common congenital cystic neck mass (70%). The study revealed the role of different imaging modalities in the diagnosis of various congenital cervical anomalies, especially in some particular complicated cases of congenital neck masses presenting in adult. Imaging study helps the clinician to anticipate any difficulties in unforeseen circumstances that may arise including infection haemorrhage, or parapharyngeal extension. Understanding the various radiologic appearances of these anomalies is greatly aided by familiarity with their embryologic origin. Moreover, considering the anatomic location and radiologic appearance, the precise embryologic origin can be accurately predicted.
Adolescent↗
[Post-radiation necrosis of the cricoid cartilage: an uncommon case].
Radiation therapy is considered as the treatment of choice for early stage laryngeal cancer. However, a few patients, after several years, develop severe life threatening complications, like edema or chondronecrosis. The clinical examination or endoscopy follow up may be difficult. CT and MR imaging can show the exact diagnosis depicting exquisitely the anatomy of the larynx. But at the beginning, the abnormalities are radiographically subtle and their diagnosis may be difficult because of artefacts due to patient dyspnea and mucous secretions. The main suggestive imaging features for suspecting a chondronecrosis seem to be the lost of normal signal hyperintensity on T1 MR imaging or a focal lack of cortical bone on CT scans, just adjacent to a focal swelling of the pharyngo-larynx mucosa. The barium pharyngography remains the best imaging diagnosis procedure for depicting associated abnormal communication between the digestive tract and the adjacent spaces or the cartilages of the larynx. Therefore, when the diagnosis is delayed, only salvage total laryngectomy can stop the infectious process. We report one case of a cricoid cartilage chondronecrosis eleven years after radiation therapy for laryngeal cancer.
Cricoid Cartilage↗
[Anatomy of the circle of Willis with 3D time of flight magnetic resonance angiography and analysis of partitions].
The purpose of this study was to analyse with 3D TOF MR angiography the anatomical variants of the circle of Willis (CW) in 109 consecutive patients. In all cases, the quality of exams was sufficient to analyse the anatomy of CW. Nevertheless, MRA over estimated hypoplastic segments because incomplete CW were more frequently demonstrated with MRA than in anatomic literature. This lack of MRA sensitivity was related to artifacts as MIP artifacts and blood flow artifacts. MRA sensitivity was improved by analysis of partitions with MIP reconstructions.
Aged↗
[Imaging of the esophagus. Normal and pathologic aspects].
Although endoscopy is the fundamental examination for exploration of the esophagus, imaging study (CT scan, barium swallow) retains numerous indications. It completes the endoscopic study in the assessment of space-occupying lesions and investigates functional disorders of the oesophagus. Barium swallow associated with the administration of glucagon has a therapeutic role in food obstruction. Endoscopic ultrasonography allows direct evaluation of the local extension of oesophageal masses. Percutaneous ultrasonography sometimes facilitates the study of the lower oesophagus in children and the cervical oesophagus.
Barium Sulfate↗
[Cancer of the esophagus: value of medical imaging].
Medical imaging defines the local, regional and metastatic spread of cancers of the oesophagus, guiding the therapeutic approach and, in particular, the indication for surgery. CT scan and echoendoscopy are currently the reference examinations. MRI provides complementary elements. After treatment, imaging is performed to detect operative complications and recurrence.
Endoscopy, Digestive System↗
[What is the place of conventional radiology in the exploration of esophageal dyskinesia and hiatal hernia?].
Esophageal dyskinesias are due to various aetiologies and sometimes present with marked clinical symptoms. The barium swallow remains the preferred first-line examination. Upper GI endoscopy and manometry are useful to confirm the functional nature and eliminate any concomitant or secondary mucosal lesions of these motor disorders. The clinical signs of hiatus hernia are essentially due to complications related to gastro-esophageal reflux. They can be asymptomatic or may present in the form of atypical, sometimes extra-gastrointestinal, symptoms. Although conventional radiology allows the diagnosis of hiatus hernia by specifying the type, the morphology and the anatomical relations, it may fail to detect the consequences of gastro-esophageal reflux, especially ulcerated lesions. Upper gastrointestinal endoscopy appears to be the first-line examination of choice for the diagnosis of hiatus hernia. Barium swallow is useful in cases of failure of endoscopy and in the context of preoperative assessment, as these two investigations are often complementary.
Esophageal Achalasia↗
[Megaesophagus].
Although it was first described a long time ago, the pathophysiology of megaesophagus, a primary esophageal motor disorder due to an abnormality of the esophageal sphincter reflex ("achalasia"), remains poorly understood. Our paper shows that it may also be missed clinically for a long time, sometimes for psychological reasons.
Adult↗
[Esophagus: postoperative aspects].
Although endoscopy has replaced radiology for the diagnosis of diseases of the oesophagus, postoperative imaging still remains essential. The radiological investigation depends on the initial disease, and its technique is adapted to the suspected complication and the type of operation performed. Immediately postoperatively, a barium swallow allows verification of the surgery before reintroducing food. The early diagnosis of possible complications is based on the barium swallow and CT scan. At a longer interval after the operation, medical imaging, particularly barium swallow, allows anatomical and functional postoperative surveillance. Relapses of the initial disease, particularly neoplastic recurrences can be distinguished from an intercurrent disease or a mechanical complication due to the operation.
Esophageal Diseases↗
[Voluminous duplication of the cervical esophagus. Contribution of imaging].
The radiologic imaging of esophageal cysts in adults is described. These rare cysts are often an incidental finding. They can lead to severe airway or digestive obstruction. Rare cases of rupture and haemorrhage are described. The authors report a case of cervical esophageal duplication, investigated by pharyngography, sonography, CT and MRI. A cystic mass located between the esophagus and trachea was depicted. Pharyngography and MRI showed the communication of the superior pole of the mass with the cervico-esophageal junction as a midline vertical tract. The upper extremity of the tract opened at the antero-medical portion of the retro-cricoïd region. The other diagnostic possibilities were excluded, especially fourth branchial pouch fistulae.
Aged↗
[Subtonsillar localization of a non-Hodgkin lymphoma. Apropos of a case].
Non-Hodgkin's lymphomas of the head and neck with a non-lymph node primary site represent the second commonest cause of oropharyngeal tumour, after carcinomas (5). The location in the Waldeyer's ring is classical, most frequently involving the palatine tonsil. The authors report a case of non-Hodgkin's lymphoma arising in the vestigial lymphoid tissue of the subtonsillar region. They raise the problem of the differential diagnosis, despite the contribution of CT scan.
Aged↗