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Biomedical subjects

B Gosselin

Publications and source records attributed to B Gosselin.

At least 127 records · Page 7Linked to original sources

[The multifocal form of bronchocentric granulomatosis].

Bronchocentric granulomatosis is a rare entity and has only recently been characterised. We report a case of a forty-three year old man presenting with multifocal bronchocentric granulomatosis which was revealed following some oto-rhino-laryngological and bronchopulmonary symptoms. The open lung biopsy confirmed the diagnosis. Treatment was by bolus doses of corticosteroids (30 mg/kg) and of methotrexate in low dosage (7.5 mg/week, then 15 mg/week) which checked the initially unfavourable outcome.

Adrenal Cortex Hormones↗

Different patterns of spleen involvement in systemic and malignant mastocytosis. A histological and immunohistochemical study of three cases.

Three cases of splenic involvement in three different types of generalized mastocytosis (systemic mast cell disease) are reported. The macroscopic, histological and ultrastructural modifications of the spleen are described. Each case exhibited a different morphological pattern. Giemsa staining, fluorescence after acridine orange staining and naphthol ASD chloracetate esterase reaction are shown to be valuable for diagnosis. By comparison, immunohistochemistry seemed not to be very useful, because no specific antigens are expressed. These findings are compared to previously published cases. Their value for the diagnosis and the prognosis are discussed.

Adult↗

Cold blood cardioplegia and warm cardioplegic reperfusion in heart transplantation.

The major cause of early death after heart transplantation is graft failure. In 99 consecutive heart transplantations two protocols of myocardial protection were employed. In group 1 (n = 38) initial cold crystalloid cardioplegia combined with cold saline storage and peroperative surface cooling was used. In group 2 (n = 61) cold crystalloid cardioplegia was injected initially and cold blood cardioplegia (Buckberg) was infused every 30 min as soon as the graft arrived in the operating room. No surface cooling was used. Warm blood cardioplegic reperfusion was administered before removal of the aortic clamp. There were 8 early (within 30 days) deaths in group 1 and 6 in group 2 patients. In group 1 there were 5 cardiac deaths against 3 in group 2. Mean ischemic time was 153 +/- 37 min in group 1 and 158 +/- 51 min (p greater than 0.05) in group 2. The post-transplantation need for catecholamines was ten times higher in group 1 patients than in group 2. The first endomyocardial biopsy (after 1 week) showed cytologic lesions compatible with ischemia in 40% of group 1 and only 9% in group 2 patients. We conclude from this initial experience that intermittent cold blood cardioplegia and warm blood cardioplegic reperfusion are useful in heart transplantation in restoring the damage suffered by the graft during brain death and graft storage.

Adult↗

Metastatic prostatic adenocarcinoma-diagnosed by bronchoalveolar lavage and tumour marker determination.

We report a patient who presented with a diffuse interstitial lung disease in whom clinical and radiologic investigation led to the suspicion of lymphangitis carcinomatosa. Bronchoalveolar lavage (BAL) was performed and revealed the presence of prostatic specific antigen (PSA) positive cells. A prostatic needle aspiration confirmed the diagnosis of adenocarcinoma. This case demonstrates the value of tumour marker determination in BAL.

Adenocarcinoma↗

[Auricular chondritis, malignant glomerulonephritis and pulmonary hemorrhage].

Relapsing polychondritis is a rare connective tissue disorder characterized by inflammation of cartilagenous structures such as ears, nose, joints, trachea and larynx. Renal disease is unusual. A 41 years old man presented with auricular chondritis, subacute renal failure and lung hemorrhage. A renal biopsy disclosed a diffuse proliferative glomerulonephritis with extensive crescents. Immunofluorescent studies suggested a GNRP type III so called "non immunologic disease". He was treated by prednisone and plasmapheresis with rapid disappearance of pulmonary hemorrhages and good renal functional improvement.

Adult↗

[Leiomyosarcoma of the superior vena cava. Case report].

Leiomyosarcoma of the blood vessels is a rare malignant tumor, and its localization in the superior vena cava is exceptional. We had the opportunity to study such a case and we compared our clinical, histological and ultrastructural results with those of 5 other reported cases.

Aged↗

[Mediastinal adenopathy disclosing Castleman's disease. Apropos of a case].

Castleman's disease or pseudo-tumoral lymphoid hyperplasia is a rare entity. We report a case of Castleman's tumour in the antero-superior mediastinum which was revealed by a radiological examination in a young woman of 26. We also report immunohistochemical studies. There are two clinical presentations of Castleman's disease; a localised form (mediastinal or extrathoracic) and the multicentric variety. The localised form may be asymptomatic or can be accompanied by general features of inflammatory disease. Surgical excision of these localised forms both confirms the diagnosis and assures a cure. The multicentric variety has various clinical peculiarities (the patients are older and/or immunosuppressed and suffering from multiple enlarged glands also in the viscera) and the disease in above all progressive. There are associations with Kaposi sarcoma and lymphoproliferative complications are described in this multicentric form and their prognosis remains poor.

Adult↗

[Strictly epidermotropic "Ketron Goodman"-type lymphoma. Immunohistochemical and ultrastructural analysis of a case].

We report a case of T cell lymphoma which was exclusively located within the epidermis. The T cells of this lymphoma were all of suppressor-cytotoxic phenotype. They did not express the CD7 antigen and a molecular biology study showed T cell type genotypic rearrangements. Both immunohistochemical and ultrastructural studies showed close contacts between lymphoma and Langerhans cells.

Aged↗

Congenital cystic adenomatoid malformation of the lung.

Twenty cases of cystic adenomatoid malformation of the lung were observed: 2 had died in utero; the diagnosis was made at birth in 13 infants of which 3 were premature. A Bochdalek's hernia had been diagnosed before birth in 2 cases by echo-tomography. The correct antenatal diagnosis had been made in 2 cases. Two infants had no symptoms, 3 were dyspneic, 8 were in respiratory distress and had to be intubated and ventilated. Two had a prune belly syndrome. Eight infants had a thoracotomy during their first week of life. Pulmonary resections concerning those 13 patients comprised 10 lower lobectomies, 1 of which was associated with a lingulectomy, and 2 upper lobectomies, 1 of which was associated with a middle lobe resection. Five patients were diagnosed and operated upon between 10 months and 8 years of age; 4 had recurrent bronchitis and 1 was diagnosed during the treatment of a gastroenteritis. They had 3 lower and 2 upper lobectomies. Recovery was uneventful in all patients except for 1 who was reoperated upon for intestinal obstruction. Antenatal diagnosis of cystic adenomatoid malformation should become standard. The malformation may be mistaken for a pulmonary sequestration or bronchogenic cyst. Differential diagnosis of a congenital hernia is important.

Child↗

Successful autologous bone marrow transplantation in second remission of malignant histiocytosis.

This report describes an 18-year-old man with disseminated malignant histiocytosis (MH). The patient initially attained complete remission (CR1) with conventional chemotherapy and then relapsed 14 months later. In second complete remission (CR2) 2 years and 8 months after initial diagnosis, an autologous bone marrow transplantation (ABMT) was undertaken following conditioning with the BEAM regimen. Bone marrow collected in CR2 was incubated with mafosfamide at a dose adjusted to the individual sensitivity of normal CFU-GM according to our current protocol. At the time of writing, 4 years post-transplant, this patient remains disease free. This is the first report of ABMT with marrow treated in vitro by mafosfamide in MH.

Adolescent↗

[Alveolar proteinosis in a facade plasterer. A sequential study of bronchoalveolar lavage and thoracic computerized tomography].

Alveolar proteinosis is a rare disease. We report a case occurring in a patient who smoked and was a facade plasterer who was treated with repeated pulmonary lavage. A mineral analysis of the lavage fluid recovered a significant amount of silica and iron oxide confirming the massive exposure of the patient to these minerals. The favourable outcome over the next 7 years was associated as regards respiratory function, with a progressive improvement in lung volumes and pulmonary output and of CO diffusion capacity, as regards broncho-alveolar lavage there was a regular increase in the cellularity and finally as regards CT scanning (at high resolution) there was a progressive clearing of the alveolar opacities only leaving the persistent opacities in the interstitium.

Adult↗

[The lung in brain death. Anatomo-biological correlations for pulmonary transplantation].

Histopathological studies of the lung conducted during multiple organ procurement from 25 subjects in a state of brain death showed that 19 of them had lung lesions pre-existent to coma, viz. alveolitis and lung invasion by dusts increasing with the subject's age. Alveolar or interstitial emphysema and subpleural bullae caused by mechanical ventilation were present in 19 cases; signs of bronchial inertia were found in 6 cases and established superinfection in 3 cases. Finally, 17 subjects showed interstitial and vascular alterations induced by oedema and shock which were related to the time spent in intensive care units, to the cause of the coma and to the quantity and quality of intravenous received while in intensive care unit. There were histological correlations between these various factors, but precise criteria concerning the functional prognosis of the transplant could not be defined. However, this study seemed to confirm the need for a new approach to the intensive care of brain-dead subjects during lung procurement: the time elapsed before procurement should be shortened, the amount of medicinal solutions administered should be reduced, Ringer lactate and packed cells should be used in preference to albumin derivatives, and arterial blood pressure, rather than diuresis, should be maintained.

Adult↗

Placental metastasis from maternal bronchial oat cell carcinoma.

We describe the case of a young pregnant woman with oat cell carcinoma diagnosed by immunohistochemical reactions and ultrastructural study of a mediastinal biopsy specimen. A neonate was delivered by a cesarean section without evidence of carcinoma, but a thorough pathologic examination of the placenta showed intervillous metastasis of the maternal oat cell carcinoma. This case is interesting, since placental metastases from solid tumors are rare (38 reported cases with pathologic examination of the placenta), and 39% of them arise from maternal melanomas.

Adult↗

[Large B cell lymphoma of the mediastinum. 6 cases].

Mediastinal large cell lymphoma with sclerosis (MLCLS) is a recently described entity characterized by its locoregional extension, within the anterior mediastinum, and its B cell origin, although the proliferation arises from the thymus. It has been, in the past, often mistaken for other tumors of the anterior mediastinum: invasive thymoma, Hodgkin's disease, poorly differentiated clear cell carcinoma and seminoma, thus leading to inappropriate therapeutic approaches. We diagnosed 6 cases of MLCLS in 1986 and 1987, in 4 males and 2 females, aged 16 to 44 (mean 27). Five of the 6 patients presented with a compressive anterior mediastinal mass, dyspnea, dysphonia, superior vena cava syndrome and parietal protrusion (3 cases). The CT scan confirmed the invasive and compressive characters of the tumor. Two patients initially had disseminated disease. Microscopically, the proliferation was composed of large clear cells, and segmented by bands of sclerosis. Immunologic studies demonstrated the B origin of the tumor cells. All 6 patients received combination therapy with an intensive CHOP protocol (L N H 84 Lyon). The first patient was initially operated, after a false frozen section diagnostic of thymoma. Resistance to chemotherapy (and rapid death within 2 months) was seen in 2 cases. On patient had a partial remission and 3 entered complete remission, of 5+, 10+ and 11 months duration, respectively, with central nervous system relapse in the latter case. Excavation of the tumor on CT scan imaging seemed to be a poor prognostic factor.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

[2 cases of villous tumor of the appendix].

Villous tumors of the vermiform appendix are uncommon with two cases and a review of the literature, the authors indicate the lack in specific clinical sign, and lay stress on the importance of the pathologic study on the therapeutic management.

Adenoma↗

[Congenital cysts of the esophageal wall with a respiratory type mucosa].

Eight patients with congenital esophageal cysts are described. They presented with respiratory or gastrointestinal symptoms or an abnormal mediastinal profile on a standard chest film. All cysts were contained in the middle or inferior portions of the thoracic esophagus. They were excised in a submucosal plane. Their coat was composed of a ciliated, respiratory type epithelium. In the embryo and after separation of the tracheal diverticulum, the esophagus is lined with ciliated cells which are able cover a "cystic duplication", which is surrounded by an esophageal muscular coat or can be "included" in a common mesenchyma, which explains the possible presence of bronchial elements in the wall of an esophageal cyst. In this eventuality the cyst may be defined as being "bronchogenic".

Adult↗

[Pulmonary sarcoidosis simulating primary acute interstitial fibrosis at presentation. Clinical, radiologic, functional and bronchoalveolar cytologic study in 3 cases].

Sarcoidosis very rarely progresses towards severe subacute respiratory failure. We report three observations of recent atypical cases of pulmonary sarcoidosis which were proven by open lung biopsy and developed severe diffuse pulmonary granulomatosis in a few weeks with an associated interstitial fibrosis. In these patients there were diffuse crepitant rales, a dramatic reduction in lung function of 30-60% of lung volumes and diffusion capacity accompanied by major hypoxemia (m +/- DS: 63.3 +/- 4.0 mmHg) without hypercapnia. Bronchoalveolar lavage showed an alveolar neutrophil leucocytosis (7.3 +/- 5.5%) without a lymphocytosis (4.3 +/- 11.5%). In the three cases under study, the clinical picture, the radiological and lung function studies, as well as the data from the bronchoalveolar lavage, were more suggestive of an acute diffuse interstitial fibrosis than of sarcoidosis.

Adult↗