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Biomedical subjects

A Warter

Publications and source records attributed to A Warter.

At least 37 records · Page 2Linked to original sources
PubMed1989

[Diagnostic approach to basocellular nevomatosis from a dental point of view. Apropos of a new case].

A new case of basal cell naevomatosis, localized in the jaws as odontogenic keratocysts, is described and the importance of the diagnostic role plaid by the dentist is underlined. Skin lesions, bone involvements and the hereditary character of the disease are described. Special emphasis is given to the importance and the easy accessibility of the oral manifestations. Possible evolution towards advanced forms, and the heterogeneity of the symptoms lay the stress on the need of an early diagnosis and the necessity of a close collaboration with the various specialists concerned.

Adult↗
PubMed1988

Mycetoma in the Republic of Niger: clinical features and epidemiology.

Mycetoma is a common disease in the Republic of Niger. In two hospitals 133 cases were observed. The major site of lesions was the foot. Actinomycetomata were seen more often than eumycetomata. Streptomyces somaliensis is prevalent in the north desert zone while Actinomadura pelletieri is common in the southern part of the country. Madurella mycetomatis, the usual etiologic agent of eumycetoma, is seen in both regions. The species incidence and distribution in Niger differs from those of the west and east African endemic areas.

Adolescent↗
PubMed1988

[Spontaneous dactylolysis or ainhum. Histopathologic study].

Ainhum or dactylolysis spontanea is characterized by the occurrence of a circular constriction located at the root of the 5th toe, rarely of a finger. It deepens, the toe becomes disabled and finally amputation occurs, spontaneously or by surgery. It is a tropical disease of the adult, the origin of which remains obscure. It seems frequent in Niger. 7 cases have been histologically studied. Classical features have been found, including hyperkeratosis, chronic dermatitis, osteoporosis with cortical bone resorption. This study has also revealed in all cases complete ligamental destruction. Moreover, vegetal foreign body granulomas have been found in 4 cases, lying deep in the dermis and in one case in a synovial membrane. Ainhum is compared with pseudo-ainhum seen in genodermatosis, in yaws and in congenital strictures. Among the usually considered etiopathogenetic hypotheses, our findings are in favor of a mechanical and inflammatory origin.

Adult↗
PubMed1988

[Pseudomycetomatous subcutaneous phaeohyphomycosis].

The authors report the first Nigerian case of cutaneous and sub-cutaneous phaeohyphomycosis. It was characterized by its original macroscopy: the lesion was pseudo-tumoral and provided with fistulae. So it looked like a mycetoma. The diagnosis was finally made by histology: it showed the typically pigmented mycelium. Cultures have not been made. Etiological agents of phaeohyphomycosis being opportunistic, this disease occurs often among immunosuppressed patients. The knowledge of unusual clinical forms may allow to suspect the diagnosis and to cultivate the exudate: this provides the only specific mycologic diagnosis.

Dermatomycoses↗
PubMed1987

Angioinvasive plasma cell granulomas of the lung.

A series of eight plasma cell granulomas of the lung were examined. Their clinical, pathologic, and immunohistochemical characteristics as well as the ultrastructural features of one case are in agreement with those found in the literature. One patient died after a surgical intervention complicated by invasion of pulmonary veins. This led to a search for vascular injuries in the other cases. On the whole, of eight cases, two showed vascular invasions at a distance, five (including the preceding ones) showed invasion of medium-sized blood vessels in the peripheral parts of the lesion, and three showed older invasions in their center; only two had no vascular lesions. To the authors' knowledge, vascular invasion at a distance has been reported only once to date. An inflammatory origin for these cytologically benign lesions remains possible, although a striking resemblance with intravascular fasciitis can also be shown. These lesions should be treated by radical and precocious surgery.

Adolescent↗
PubMed1987

[Inhibitory action of methysergide bimaleate on the collagenase of Clostridium histolyticum].

Inhibitory effects of methysergide bimaleate on the collagenase of the Clostridium histolyticum have been established. Having previously shown the inhibitory action of serotonin on this bacterial collagenase, the authors have tested methysergide bimaleate as another inhibitor. After injection in the peritoneum of the rats of methysergide bimaleate and collagenase together, lesions are minimal or absent, in contrast with the dramatic effects of collagenase alone. This shows the antagonist role of methysergide bimaleate in regard to collagenase and suggest that methysergide bimaleate reduce the collagenolysis and may elucidate the possible occurrence of fibrotic lesions after treatment of migraine by methysergide bimaleate in man.

Animals↗
PubMed1987

[Uninodular bronchiolo-alveolar cancer. Apropos of 5 cases with a prolonged course].

Five cases of uninodular bronchioloalveolar cell (BAC) carcinoma are reported. These 5 cases were characterized by the protracted course of the disease: 14.5 and 11.5 years respectively in the 2 patients who died; 7.5, 12 and 12.5 years respectively in the 3 patients who are still alive. Prior to being diagnosed at excision, the tumours had been followed up for an unusual 2 to 10 years period, with phases of radiological stability and phases of very slow growth. This very slow course is exceptional in lung cancer. It differs not only from the course of diffuse BAC carcinoma, but also from the habitual course of uninodular BAC carcinoma and from that of peripheral adenocarcinoma. Similar cases could be found in the literature, and a comparative study has been conducted between these slow-course carcinomas and normal-course carcinomas. Whatever their outcome, slow-course carcinomas are asymptomatic tumours which present at radiography of the chest as a peripheral round or oval opacity devoid of pathognomonic features. The post-operative prognosis of slow-course tumours seems to be more favourable than that of the other lung cancers. At histology, carcinomas with a protracted course usually show a pattern similar to that of lesions called by some authors "benign adenomatosis"; however, some of these tumours exhibit fairly distinct signs of malignancy, and electron microscopic images also are far from being uniform.

Adenocarcinoma, Bronchiolo-Alveolar↗
PubMed1987

[Histopathology of microsurgical arterial repair. Use of fibrin cryoprecipitates].

The increasing practice of small arteries anastomosis especially in neurosurgery entails improvements in suture techniques. Classical suture is slow and needs a prolonged clamping. The stitches are responsible for severe necrotic lesions in the arterial wall. A biological glue made of cryoprecipitated human fibrinogen, factor XIII and fibronectin, locally activated by thrombin, is tested here on rabbit's common carotid. The application of the glue on intact or sectioned arteries appears innocuous, notably with regard to its thrombogenic potential. Comparison of classical sutures and sutures with glue and a greatly reduced number of stitches shows histological results of equivalent quality. At the early stages, the fibrin glue doesn't exceed in volume the usual perianastomotic hematoma. It is completely resorbed within two weeks. Later the scar is thinner than after classical suture, although no ruptures or aneurysms were observed. This method shortens the surgical procedure, with presumed benefit for the drained territories. It diminishes the lesions caused by the stitches. Moreover it allows an easy application of an arterial patch on the sectioned vessel: a comparative series with sutured patches shows on the contrary poor results. Although aggresive for the tissues, a minimal number of stitches remains necessary: it is actually the only available means of correctly positioning the anastomosis area.

Carotid Arteries↗
PubMed1987

[Pleural and mediastinal metastases from a malignant mesothelioma of testicular vaginalis membrane].

The authors describe an original observation of secondary intrathoracic metastases due to a malignant adenomatoid tumour or mesothelioma of the testicular tunica vaginalis. The hypothesis of a primary pleural mesothelioma could be excluded here as could secondary pleural deposits from another neoplasm. The exceptionally malign potentialities of this common tumour of the testicular adnexae were reviewed as well as the extremely poor prognosis.

Adult↗
PubMed1987

[Thymoma. Analysis of a series of 42 cases].

The authors have treated 42 patients with thymoma and report on their experience. The mode of discovery, and notably the thymoma-myasthenia association in 8 cases (20%), the diagnostic approach and the management of the disease--surgery alone : 18 cases, surgery combined with radiotherapy : 24 cases and/or with chemotherapy : 5 cases--were analyzed. The thymomas were classified according to the G.E.T.T. system after re-examination of the histological sections. The course of the disease was studied. The overall survival rate, which depends on tumoral stage, was 71% at 4 years and 69% at 10 years; 5 patients died of the disease and 9 of other causes, including 5 who presented with a blood disease. This series is compared with other published series. The frequency of myasthenia and the respective prognostic values of anatomico-surgical, histological and histo-immunological classifications are discussed.

Adolescent↗
PubMed1984

Transbronchial needle aspiration in the diagnosis of sarcoidosis.

A total of 258 patients with suspected sarcoidosis underwent transbronchial needle aspiration lymph node biopsies and forceps bronchial biopsies during rigid bronchoscopy. Transbronchial needle aspiration biopsies revealed noncaseating granulomas in 66.3 percent of patients. When transbronchial needle aspiration biopsies were combined with forceps bronchial biopsies, the positive rate increased to 77.7 percent. No major complication occurred when using transbronchial needle aspiration. Rigid bronchoscopy with transbronchial needle aspiration biopsies appears to offer a sensitive and specific alternative to more invasive techniques used in the diagnosis of sarcoidosis.

Adolescent↗
PubMed1984

[Cylindrical cancer of the lung. Analysis of a series of 191 cases].

The authors analyse 191 cases of cylindrical carcinoma of the lung. Study of the clinical and radiological characteristics, as well as the course, revealed the following: the reduced male predominance of this type of lesion, the often distal site and the primary pulmonary nature. The prognosis is identical to that for squamous forms: 31% survivors at 5 years.

Adenocarcinoma↗