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Biomedical subjects

F Bejui-Thivolet

Publications and source records attributed to F Bejui-Thivolet.

At least 19 recordsLinked to original sources

["Spontaneous" resolution of two severe methotrexate-induced pneumonias].

The beneficial role of corticosteroid therapy for the treatment of methotrexate-induced pneumonia remains controversial. We report two cases of acute severe interstitial pneumonia induced by methotrexate in patients with non-Hodgkin lymphoma given a polychemotherapy protocol (M'BACOD). The first signs appeared on the eleventh day of the first cycle in patient one and on the tenth day of the third cycle in patient two. The causal implication of methotrexate was based on the history, the clinical and radiological presentation, and the negative tests in both patients: lymphocyte alveolitis with granulomatous lesions on the transbronchial biopsy in patient one and positive leukocyte migration test in the presence of methotrexate in patient two. Early acute respiratory failure required high flow rate oxygen therapy with positive expiratory pressure ventilatory assistance. The course was rapidly favorable both for blood gases and radiographic presentation without corticosteroids. These two cases illustrate that pulmonary disease can be cured without corticosteroids despite severe respiratory failure at onset. This provides a further argument on reservations about using corticosteroids for suspected methotrexate-induced pneumonia.

Aged↗

[Rare etiology of multiple pulmonary lacunae].

Sarcoma of the common pulmonary artery are rare malignant tumors which can mimic pulmonary embolism. In the case presented here, the inaugural signs were particularly misleading: multiple pulmonary lacunae on computed tomography. The unusual aspect and asymmetric localizations at pulmonary angiography then suggested the doubtful nature of the embolism etiology. Magnetic resonance imaging findings suggested the diagnosis of sarcoma of the pulmonary artery. Certain diagnosis was obtained at pathology examination of the surgical specimen after thoracotomy. A malignant fibrous histiocytoma was identified. Curative resection was not possible and chemotherapy was performed. Unusual parenchymal lesions were then evidenced on the radiography. Better and better magnetic resonance imaging criteria are described in the literature and help distinguish between thromboembolism and sarcoma of the pulmonary artery. Follow-up of the clinical course is thus improved. It is nevertheless necessary to evaluate intravascular extension to determine whether curative surgery is possible.

Adult↗

[Diagnostic difficulties in angiosarcoma of the pulmonary artery with hemoptysis].

Intimal sarcomas growing from the pulmonary trunk or branches of the pulmonary artery, are rare tumours in which the diagnosis is most often made at autopsy or during a thoracotomy. Usually the clinical pictures is non specific resembling a severe pulmonary embolus which is resistant of all treatment. With the help of new imaging techniques, a pre-operative diagnosis is made in more than half the cases. When there is a tumour which is relatively localised and without endoluminal invasion, as in the observation reported here, the diagnosis rests on the histology from the operative specimen.

Angiography↗

[Value of cytological study by flow cytometry or analysis of image as a complement to macroscopic study by cytoscopy. Apropos of therapeutic follow-up of a case of tumor of the bladder].

The case described corresponds to a grade G2 urothelial tumor with stage pTa extension (according to the World Health Organisation classification). After transurethral resection of the tumor and treatment by Bacillus Calmette Guerin (BCG), the efficacy of treatment was evaluated by cystoscopy, standard cytology, flow cytometry or image analysis. According to these various methods it has been shown that a normal cystoscopy may or may not be associated with aneuploidy revealed by flow cytometry. Such a case clearly illustrates the value of combining macroscopic examination and a cytologic analysis in particular by flow cytometry in order to increase the accuracy of diagnosis and to evaluate without ambiguity the efficacy of treatment.

BCG Vaccine↗

Human papillomavirus DNA in cervix. In-situ hybridization with biotinylated probes on Bouin's fixed paraffin embedded specimens.

We examined retrospectively a series of 65 Bouin's fixed, paraffin-embedded tissue specimens from 8 condylomatous lesions, 16 condylomas associated with cervical intraepithelial neoplasia (CIN), and 12 neoplasia without condylomatous signs, for histological characteristics, the detection of viral structural antigen, the presence and typing of HPV DNA by molecular in situ hybridization with biotinylated probes types 6, 11, 16 and 18 under stringent conditions (Tm - 12 degrees C). HPV DNA was present in 34/65 (52%) specimens. Detection of viral structural antigen was positive in only 14% (3/22) specimens. HPV DNA were identified in 9/9 (100%) condylomatous lesions (with HPV type 6, 11, 18). Three condylomas were coinfected with both HPV type 6 or 11 and type 18; viral antigen was found in two specimens. HPV DNA were detected in 18/31 (58%) low grade and advanced CIN associated with condylomatous changes (type 6 = 5 specimens, type 11 = 3 specimens, type 16 = 4 specimens, type 18 = 6 specimens). Four of these cases were coinfected with both HPV type 6/11 and HPV type 16/18. Viral antigen was negative in all specimens. HPV DNA were detected in 7/25 (28%) advanced intra-cervical neoplasia (CIN III) without anatomopathological condylomatous changes (type 6 = 1 specimen, type 16 = 3 specimens, type 18 = 3 specimens). One of these specimens contained both HPV types 6 and 18. Viral antigen was found in one case. Our data confirm the association of HPV types 6 and 11 with condyloma and low grade neoplasia; HPV types 16 and 18 were associated with advanced cervical neoplasia.(ABSTRACT TRUNCATED AT 250 WORDS)

Acetates↗

[Pulmonary lesions in Wegener's disease. Report of the French Anatomo-clinical Research Group. Study of 40 pulmonary biopsies].

We report the results of a morphological analysis of 60 pulmonary biopsies gathered from a multi center study, organised by the clinico-pathological research group on Wegener's Disease under the auspices of the French Language Society of Thoracic Medicine. Forty of the sixty cases analysed were retained after indexing the histological aspects in order to specify their diagnostic value. Two groups of lesions were distinguished, which had different significance. Group A: These include the three major diagnostic criteria, which reinforce one another as they associate: 1) The polymorphoneutrophil microabscesses with limited central necrosis or an extended necrosis like the contours of a relief map. 2) An angiitis (arteries, veins, capillaries) with eccentric focal parietal crescent-shaped microabscesses. 3) Polymorphous granulomas with giant cells. Group B: In this group are the minor morphological observations (table II) of a lesser value and significance. 1) Acute or chronic lesions with alveolar haemorrhage, endogenous lipid pneumonia, xanthomatous granulomas, an organising pneumonia with an alveolitis. 2) Bronchial lesions: Bronchitis and necrotising bronchiolitis, which is more rarely follicular. 3) Sero-fibrinous or infiltrative neutrophil pleural lesions with focal microabscesses, elastolysis and elastophagia with giant cells in the elastic lamina. Thirteen cases presented with misleading lesions, which was a possible source of diagnostic error and led to a discussion of several associated disorders (Goodpasture's syndrome, and collagen disorder syndrome) or there may be systemic angiitis (Giant cell or lymphocytic) or also systemic or tissue eosinophilia (Churg-Strauss syndrome, bronchocentric granulomatosis) or necrotising bronchitis (atrophic polychondritis) or other forms of nodular interstitial fibrosis, such as histiocytosis X. We would like to stress the great polymorphic variation of the lesions and the difficulties which confront pathologists in the diagnosis of Wegener's Disease, above all when it is localised to the lung. There is value in finding at least one major diagnostic criteria which is associated with a minor criteria and with the help of the C.ANCA levels may lead to a narrow clinicopathological correlation and allows for a fairly precise approach to the diagnosis and identification of early or unusual lesions and thus to the early treatment of patients before irreversible renal failure appears.

Biopsy↗

[Diseases of the pleura. Materials used and study technics].

Pleural diseases frequently pose problems to the pulmonary physician. The clinical and radiological approaches are often insufficient and it is necessary to resort to techniques which enable a precise morphological diagnosis of the pleural lesion. Starting with a needle puncture and biopsy, the medical investigation of the pleura has been enriched by thoracoscopy which enables visualisation of not only the parietal and visceral pleura and the lung but also the mediastinum and the pericardium. Using this technique the diagnostic yield and the harmless nature of the technique are of the first importance. After recording traditional techniques of investigation of lung disease (puncture, needle biopsy) the equipment, the technique, the indications and the risks and the diagnostic results from thoracoscopy are discussed.

Biopsy, Needle↗

[A predominant manifestation of pleural cryptococcosis in acquired immunodeficiency syndrome].

Systemic cryptococcosis occurs in at least 6% patients with human immunodeficiency virus infection (HIV). The lung infection by cryptococcus neoformans, less frequently observed than meningeal involvement, consists usually in focal parenchymal mycosis. Authors report an apparently isolated pleural cryptococcosis in a 41 years old mal with HIV infection. Diagnosis was performed initially by pleural and bronchial alveolar lavage (BAL) fluid culture. Characteristic cryptococcosis pathological and histologic findings from thoracoscopy and open pleural biopsy are described. Cryptococcus capsular polysaccharides stainings and thoracoscopy interests are emphasized.

Adult↗

Human papillomavirus type 11DNA in papillary squamous cell lung carcinoma.

We report a case of papillary squamous cell carcinoma of the lung developing in relation to a condylomatous papilloma and related to human papillomavirus (HPV) infection. The viral origin of the bronchial papillomatous lesion is strongly suggested by cytological and histological features with marked condylomatous changes. No viral capsid antigen was detected by immunohistochemistry. Transmission electron microscopy failed to reveal intranuclear viral-like particles in the papillary part of the carcinoma, but typical ultrastructural koilocytotic cells with irregular nucleus and coarse chromatin were observed. HPV DNA type 11 was detected by in situ hybridization using biotinylated probes on paraffin-embedded specimens, under stringent conditions (Tm-12 degrees, 50% formamide). Papillary squamous cell carcinoma may result from the malignant conversion of benign squamous papilloma of the bronchus. HPV type 11 may be associated with malignant conversion of benign papilloma of the pulmonary tract, as in the upper respiratory tract. In situ hybridization with biotinylated probes is a relatively simple and appropriate method for retrospective analysis of HPV DNA sequences in surgical specimens.

Bronchial Neoplasms↗

[Intra-mandibular salivary tumors. Apropos of 3 cases of malignant tumor].

Three cases of intra-mandibular salivary tumors are presented. Two patients died (one with local recurrence, the other with metastasis). 69 cases have been reported in the literature. The lesions present as a progressive swelling of the mandible, with a frequent nervous involvement. The histologic diagnosis is difficult. Mucoepidermoid tumors are the more frequent (71%) but all salivary tumors can be found. An aggressive clinical behavior with local recurrences and/or metastasis (more than 30%) justify a radical treatment.

Adenocarcinoma↗

[A case of aggressive juvenile fibromatosis of the mandible. Review of the literature].

We report a new case of aggressive juvenile fibromatosis (A.J.F.) in a 20-month-old girl. The lesion affected the inferior border of the left mandible and the adjacent soft tissues. The child presented with a painless mass, which had grown over a period of 2 months. Radiographs and computed tomographic scan showed a multilacunar bone defect with subcutaneous and gingival involvement. A biopsy was performed, followed by a partial hemimandibulectomy and a costal graft. The surgical specimen measured 4 X 3 X 3 cm. The patient did well 1 year after surgery. 16 cases of A.J.F. have been reported; with ours, 14 are mandibular. A.J.F. is a locally aggressive lesion, which doesn't metastasize. It occurs chiefly in childhood and adolescence from 1 1/2 to 18 years (median 6.5 year-old). Duration of symptoms prior to presentation varies from a few weeks to months. Clinically, it is a firm nodule. Radiographs are non-specific, but 9 cases have poorly defined destruction of the mandibular inferior border. Following a block resection of the tumor (13 cases), there is no recurrence. In this review, we discuss the clinico-pathologic diagnosis of this impressive tumor which is compared with other mandibular fibrous tumors in children.

Female↗

[Tracheobronchial lipomatosis. Apropos of a case].

A case of tracheo-bronchial lipomatosis is reported. Bronchial lipomas are benign fatty tumours which frequently result in bronchial superinfection or dyspnoea. The radiological image is often one of atelectasis, and the diagnosis is made at endoscopy. Treatment, rendered necessary by destruction of the underlying lung, is either endoscopic or surgical. Multiple localizations are exceptional and raise special therapeutic problems.

Bronchial Neoplasms↗

Keratins in malignant mesotheliomas and pleural adenocarcinomas: comparative immunohistochemical analysis with polyclonal and monoclonal antibodies.

The distribution of intra-cellular keratins was studied in normal pleural mesothelium, malignant mesotheliomas and adenocarcinomas. This study was performed on deparaffinized sections of tissue fixed in Bouin's solution by indirect immunofluorescence with a monoclonal antibody (KL1) and a conventional keratin antiserum (AKS). Discrepancies were detected using one antibody or the other. Cells from normal mesothelium and 18 cases of malignant mesotheliomas (papillary, tubulary, solid epithelial type) were strongly labelled only by KL1. The 2 cases of sarcomatoid type were negative with both antibodies. In contrast 5 metastatic adenocarcinomas and 5 lung adenocarcinomas were weakly positive or negative with both antibodies. These data confirm the presence of cytokeratins in epithelial differentiation process. Although a clear-cut distinction between mesotheliomas and adenocarcinomas was not possible using these keratin antibodies. Our data point out the importance of reactivity pattern of the antibody used in such investigations.

Adenocarcinoma↗

[Value of transparietal lung biopsy in the cytological diagnosis of bronchiolo-alveolar carcinomas of the lung. Apropos of 3 cases].

Bronchiolo-alveolar carcinoma is a rare primary lung tumour, which is difficult to diagnose by cytological techniques. This peripheral tumour, which develops on pre-existing alveolar walls, is not visible on bronchial endoscopy and brushing is often negative. The cellular material derived from aspiration or expectoration is characterised by numerous papillae, without any cytonuclear criteria of malignancy. The differential diagnosis is very difficult with reactive papillary hyperplasia and various forms of chronic bronchial inflammation. Transparietal aspiration lung biopsy facilitates the diagnosis of glandular carcinoma: the material examined corresponds to pathological tissue, as the biopsy is performed under image intensifier control. An inflammatory lesion is excluded by the rich cellularity and by the presence of architectural features of malignancy: cohesive and three-dimensional clumps of papillary tumour cells. The early cytological diagnosis of bronchiolo-alveolar and primary bronchiolar carcinomas of the lung by transparietal aspiration biopsy can allow the surgical cure of certain localised forms.

Adenocarcinoma, Bronchiolo-Alveolar↗