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J P Senac

Publications and source records attributed to J P Senac.

At least 37 records · Page 2Linked to original sources
PubMed1994

[Interventional radiology of the thorax].

The authors review the various thoracic interventional radiology techniques currently used by a medicoradiosurgical team. CT-guided needle biopsy has an important place in the diagnostic approach to parenchymal as well as mediastinal and pleuroparietal tumours. CT also allows drainage of various thoracic collections. Embolizations of bronchial arterial haemoptyses, pulmonary arteriovenous aneurysms or post-catheterisation false aneurysms are effective therapeutic procedures. Percutaneous extraction of foreign bodies generally avoids the need for open surgery. Superior vena cava and tracheobronchial stents are palliative treatments allowing a better quality of survival in patients with superior vena cava compression. CT-guided sympatholysis and in situ fibrinolysis have certain specific indications in pulmonary embolism.

Arteriovenous Fistula↗
PubMed1993

Inoperable pulmonary aspergilloma: percutaneous CT-guided injection with glycerin and amphotericin B paste in 15 cases.

Fifteen patients with active inoperable pulmonary aspergilloma underwent percutaneous injection of a special therapeutic paste of glycerin and amphotericin B. This paste was warmed just prior to injection, and filling of the lesional cavity was achieved in one session if it was possible to obtain anaerobic conditions for destruction of the aspergilloma. Injection was performed with computed tomographic guidance with use of an 18-gauge flexible needle and with administration of anti-coughing analgesia. Follow-up was continued for 7 months on average. Filling of the lesion cavities required three sessions on average because of cough or bronchospasm. In 12 cases the aspergilloma regressed within 3 months and results at serology became negative. In three cases, there was no change in the cavity, but hemoptysis did not recur. Results in this series confirm the feasibility and efficacy of this palliative treatment.

Aged↗
PubMed1993

CT and MR evaluation of laryngeal carcinomas.

A prospective and comparative tomography (CT)/magnetic resonance imaging (MRI) study on 110 patients with endoscopically examined and histologically proven laryngeal malignancy is presented. Post-operative pathological and intraradiological (CT vs. MRI) correlation are established. We conclude that MRI is the method of choice for staging laryngeal malignancies. MRI can also be used for follow-up (recurrence after surgery, evolution under radiation therapy).

Carcinoma↗
PubMed1993

[Contribution of magnetic resonance imaging to the exploration of the mediastinum].

Magnetic resonance imaging (MRI) already has a number of indications in exploration of the mediastinum, the most frequent of which being exploration of vascular pathologies facilitated by visualization of vascular lumina without need for a contrast medium, MRI can provide detailed information concerning the size, relations and wall thickness of these vessels ans sometimes of aneurysmal thrombosis. It also makes it possible to study aortic dissections and venous diseases of the mediastinum. As regards mediastinal masses, MRI complements computerized tomography (CT): it is better than the latter to distinguish vascular relations and it provides aetiological arguments based on the intensity of T1 and T2-weighted signals.

Adolescent↗
PubMed1993

[Localized osteoplastic bronchopathy with tumoral expression, including Al amyloidosis].

We report a case concerning a 65 year old man who suffered from a drug resistant asthma and radiographically visible mass in the right lower lobe of the lung. Pathological studies demonstrated it to be "Bronchopathia Osteoplastica", involving segmental bronchi, with completed hematopoietic metaplasia. This rare dystrophic lesion was associated with localized lambda light chain amyloidosis as was proved by the immunohistochemistry. This association suggests a possible relation between amyloidosis and abnormal osteogenesis.

Aged↗
PubMed1992

[Lung metastasis].

Pulmonary metastasis of non small cell lung carcinomas are commonly nodular. The isolated nodular form must be diagnosed from double location carcinomas. The lymphangitic carcinomatosis semiology is best demonstrated with HR-CT-Technic. Endobronchic, alveolar and multi-micro angiopathy with emboli are less common.

Carcinoma, Non-Small-Cell Lung↗
PubMed1991

[Pleural involvements in thymoma. Apropos of 5 cases and review of the literature].

The authors report five cases of pleural involvement in patients with thymoma. In 3 cases these sites were not directly related to the primary and in 1 case they constituted the first event in the disease. CT and MRI allow effective assessment of these pleural lesions ... provided this phenomenon, reported in the literature, is well known by the radiologist.

Adult↗
PubMed1990

[Role of x-ray computed tomography in the preoperative evaluation of aneurysm of the abdominal aorta].

The authors have studied the files of 50 consecutive patients (1987-89) operated for abdominal aortic aneurysm (AAA) and examined with CT. The criteria for inclusion were surgical features. CT can be made more accurate for the study of AAA: Thus the location of the neck of the aneurysm relative to the renal arteries was defined in 94% of all cases. In addition, CT yields information about the wall of the aneurysm, whether it be thickened (3 inflammatory aneurysms were properly diagnosed) or, mor importantly, weakened (solution of continuity in the wall in the "prior-to-rupture" appearance). Owing to the quality of its performances and to its noninvasive character, the authors regard CT with contrast injection as an essential technique for the preoperative assessment of abdominal aortic aneurysm in most cases. The examination must be carried out strictly, especially for the contiguous sections of the renal arteries and their extension to the crural arch. As it demonstrates weakened areas more easily, a more accurate study of the aneurysmal wall with CT might increase the surgical indications for some smaller aneurysms, the potential evolution of which does not seem to be associated with their diameter only.

Aged↗
PubMed1990

[Role of modern imaging (CT-MRI) in the preoperative evaluation of bronchial cancers. Results in 202 cases].

The authors present the results of a comparative prospective study of the staging 202 bronchogenic carcinomas (T and N) before surgery. The results of CT (202 cases) and MRI (64 cases) were compared with surgical evaluation and pathologic findings. CT and MRI were part of the decisive criteria for therapeutic-surgery choice and were interpreted before surgery. The results showed poor sensitivity for the T and N but better specificity. MRI is superior to CT with the 3 dimensional demonstration and T1 T2 weighted sequences, but its utility remains limited. The authors give their preferred indications for MRI investigation after CT staging. Staging by CT (and MRI) is of great value to avoid impossible thoracotomy and to confirm the findings of mediastinoscopy (suspected N2 and even more N3).

Adult↗
PubMed1990

[Magnetic resonance imaging of the larynx. Its contribution compared to x-ray computed tomography in the pre-therapeutic evaluation of cancers of the larynx. Apropos of 90 surgical cases].

The authors report a prospective and comparative study of the pre-operative staging of 90 laryngeal carcinomas by CT and MRI, with blind analysis of each examination. The radio-anatomic correlations and the inter-method correlations (CT versus MRI) are reported. According to the authors MRI seems to be the method of choice because of its capabilities in soft tissues differentiation and because of its multiplanar representation. The motion artefacts are resolved by the fast imaging technique and the spatial resolution is optimized by special surface coils.

Epiglottis↗
PubMed1990

[Contribution of high resolution x-ray computed tomography to the diagnosis of pulmonary histiocytosis X. Apropos of 12 cases].

The authors studied the value of high resolution computed tomography in twelve patients with pulmonary histiocytosis X. The aim of this study was to define the CT signs. More or less thin-walled air-filled cysts were observed in all but one case, although the subsequent follow-up of this case revealed the development of such cysts 6 months later. Nodules were also present in all but two cases. They sometimes consisted of excavated nodules. Reticulations, "frosted glass" appearance and irregularities of interface--all signs of a classical interstitial syndrome--were observed less frequently. The lesions were always diffuse, cortical and medullary. The predominance for the upper lobes was only observed in 50% of cases. The case examined on 2 occasions during the course of the disease at an interval of 6 months suggested the progression of small solid nodules towards larger, excavated nodules, finally resulting in thin-walled cysts which may eventually coalesce to force a "lacework" appearance. The pathophysiology of this progression of the lesions and therefore of the pulmonary eosinophilic granuloma is discussed by the authors.

Adult↗
PubMed1989

[A rare pulmonary tumor: pneumoblastoma. Apropos of a case and review of the literature].

A case of pneumoblastoma concerning a 33 year old man, incidentally discovered on a systematic chest X Ray, is reported. The radiologic findings include a voluminous and peripherical mass with necrotic zones. The pathologic findings in optic microscopy and the special technics consist in the three cellular contingents which form the pneumoblastoma: clusters of indifferentiated cells, epithelial cells and spindle cells. All the features show clearly a blastomatic character very similar to a foetal lung which allows to differentiate the pulmonary blastoma from carcinosarcoma. The authors, through a review of the literature, demonstrate the rarity (less than 100 cases reported), the malignant evolution which metastasis and the age (strong majority of adults) which characterize this pathology.

Adult↗
PubMed1989

[Thoracic puncture-biopsy. Technic and indications. Critical study of more than 1,200 procedures].

With the use of CT guidance, thoracic (pulmonary and mediastinal) biopsy is a very accurate procedure. The authors obtained 86% of good results in a series of more than 1,200 procedures. Aspiration-biopsy therefore occupies an important place in the diagnostic process and in pretreatment assessment when fibroscopy is negative. The authors describe their technique and demonstrate the value of minimally traumatic biopsy equipment: fine millimetric needles. The use of CT and fine needles dramatically decreases the risk of pneumothorax and blank aspiration. A personalised collaboration between radiologists and pneumocytologists is an essential prerequisite. The authors discuss the indications for this technique and propose a decisional flowchart.

Adolescent↗
PubMed1989

[Tracheo-bronchopathia chondro-osteoplastica. X-ray computed tomographic signs].

The authors report a case-report of tracheo-bronchopathia chondro-osteoplastica with High-Resolution CT scan examination. They emphasize the rarity of this disease, its long clinical latency and the radiologic patterns of tracheal stenosis and calcificated in ward projecting formations from the tracheal wall. The radiologic diagnosis is discussed. Endoscopy and histology are the diagnosis. The etiology, prognosis and specific treatment remain unknown.

Bronchial Diseases↗
PubMed1989

[Pulmonary opacities in the shape of ribbon streamers. Apropos of a case].

The authors report a case of chronic interstitial pneumonia with a very unusual appearance (on plain films and CT); in fact such ribbon-like linear opacities with concentric and pseudo-cavitary disposition have not been previously described. They are comparable but different from the linear opacities described by Carrington in some cases of chronic eosinophilic interstitial pneumonia, which are vertical and peripheral. They are also different from the curvilinear sub-pleural opacities reported in some cases of asbestosis. On the basis of the anatomic findings they discuss the specificity of such radiologic patterns or their sole value as an evolutive state.

Female↗