Two-kaon correlations in central Pb+Pb collisions at 158 a GeV/c.

Two-particle interferometry of positive kaons is studied in Pb+Pb collisions at mean transverse momenta approximately 0.25 and 0.91 GeV/c. A three-dimensional analysis was applied to the lower p(T) data, while a two-dimensional analysis was used for the higher p(T) data. We find that the source-size parameters are consistent with the m(T) scaling curve observed in pion-correlation measurements in the same collisions, and that the duration time of kaon emission is consistent with zero within the experimental sensitivity.

[Scrotal panniculitis due to cold: a pseudo-tumoral lesion in the prepubertal child. Report of a case]. / Panniculite scrotale au froid: une lésion pseudo-tumorale chez l'enfant prépubère. A propos d'une observation.

We reported a case of scrotal panniculitis in a 7 year-old boy after exposure to cold by swimming in cold sea water. Scrotal cold panniculitis is an unusual, confined to prepuberal patients. This entity must be known to avoid surgical exploration because injuries subside spontaneously within few weeks.

[Colonic pseudo-obstruction caused by digestive amyloidosis in a chronic hemodialyzed patient. Apropos of a case]. / Pseudo-obstruction colique par amylose digestive chez l'hémodialysé chronique. A propos d'un cas.

A case of intestinal pseudo-obstruction by amyloidosis, occurring after 20 years of dialysis in a 72-year-old woman is reported. Although acute intestinal complications of intestinal amyloidosis, such as ischemia, colonic obstruction or haemorrhage are well known, colonic pseudo-obstruction is more unusual. It gradually results in, it carries out an intestinal obstruction with colonic and gastric distension. The diffuse topography of amyloid deposits throughout the gastrointestinal tract carries a poor prognosis and surgery cannot be curative.

[Diabetic mastopathy with epithelioid fibroblasts :differential diagnosis from an infiltrating lobular carcinoma of the breast. Report of two cases]. / Mastopathie diabétique avec fibroblastes épithélioïdes: piège diagnostique avec un carcinome lobulaire infiltrant du sein. A propos de deux cas.

Two cases of diabetic mastopathy are reported. The patients presented with a rapidly increasing mammary mass. The pathologic findings of diabetic mastopathy usually consist of a lymphocytic lobulitis, a dense stromal fibrosis and prominent epithelioid fibroblasts. In our two cases, the latter findings were initially misinterpreted as malignant cells of an invasive lobular carcinoma. These lesions were first described in longstanding insulin dependent diabetics but recent reports showed that they could also occur in patients with other auto-immune disorders (systemic lupus erythematous, hypothyroidism). Diabetic mastopathy may reoccur locally and the treatment remains to be determined.

[Myxoma of the left atrium: a cause of retinal artery embolism not to be ignored. Apropos of a case]. / Myxome de l'oreillette gauche: une cause d'embolie artérielle rétinienne à ne pas méconnaître. A propos d'une observation.

We report a case of retinal artery obstruction in a 56-year-old woman which proved to be a first symptom of a left atrial myxoma. The patient also had an inflammatory syndrome and a transient embolism of the cerebellum and the left leg. Two dimensional echocardiography showed an atrial mass compatible with myxoma. This diagnosis was confirmed by histological analysis of the surgically-removed tumour.

[Bullous manifestations of Kaposi disease associated with AIDS]. / Manifestations bulleuses d'une maladie de Kaposi associee au SIDA.

INTRODUCTION: We report the apparently first description of bullous Kaposi's sarcoma in a patient with AIDS. CASE REPORT: Kaposi's sarcoma was observed in a HIV positive homosexual who had developed AIDS. The delay between the development of Kaposi's sarcoma and the appearance of bullae was 6 months. Bullae occurred after oedema and necrosis of the subepidermic derma. DISCUSSION: This unusual clinical presentation of Kaposi's syndrome in an AIDS patient led to rapid tumor extention and would thus suggest a rapidly unfavourable prognosis.

[Papillary and cystic tumor of the pancreas. Histological, immunohistochemical and flow cytometric study]. / Tumeur papillaire et kystique du pancréas. Etude histologique, immunohistochimique et par cytométrie en flux.

The authors are reporting a case of papillary and cystic neoplasm of the pancreas. This rare malignant epithelial neoplasm occurs mostly in young women and has a more favorable prognosis than the adenocarcinoma. Radiologic investigations showed a well demarcated, heterogeneous, hypovascular mass. The histological study showed the proliferation of epithelial cells in a papillary pattern. The immunochemistry was negative for markers of adenocarcinoma but positive for vimentin, alpha-1-antitrypsin, alpha-1-antichymotrypsin and neuron specific enolase. Receptors of progesterone were also detected. By flow cytometric analysis, the tumours was hypoploid. The histogenesis of these tumours remained controversed. Ultrastructural details of the neoplastic cells suggest that these tumours originate from small duct cells; detection in several cases of markers for endocrine neoplasm suggests that they originate from primitive multipotential cells, that may show exocrine or endocrine differentiation.

[Digestive arterial obstructive diseases in three young women]. / Artériopathies oblitérantes digestives chez trois jeunes femmes.

The authors report three cases of severe intestinal ischaemia occurring in young women (age 29-44), all of them being smokers. In all cases, intestinal ischaemia was recognized lately and lead to death within two years. The occlusive arterial lesions concerned nearly exclusively the intestinal arteries. Microscopic lesions were heterogeneous and non-specific. In a case, an occlusive intimal fibrosis was noted; in another case, fibrosis of the media and the adventitia was observed; and in the last case, the lesions were suggestive of thromboangiitis obliterans. The authors advocate for the systematic recording of cases of intestinal ischaemia in young women, in order to identify the risk factors and pathogenic features of this rare condition.

[Acquired hypogammaglobulinemia and multifocal granulomatosis]. / Hypogammaglobulinémie acquise et granulomatose multifocale.

In adult acquired hypogammaglobulinaemia multi focal granulomas have often been described and have regularly led to the hypothesis of an association with sarcoidosis. We present a case of this type in a man aged 29 who was a smoker with a hypoglobulinaemia involving IgG, IgA and IgM and which was discovered following pneumococcal pneumonias. He presented with a significant hepatosplenomegaly and absent cutaneous reactions to T dependent antigens with an elevated ACE activity. Histological examination of the splenectomy specimen and of the liver biopsy showed an infiltration by epithelioid follicles and confluent giant cells without necrosis. The pulmonary studies showed a normal chest radiograph but the bronchial biopsy again found a granulomatous infiltration. The broncho-alveolar lavage was cytologically normal and a very slight and paradoxical reduction of the alveolar immunoglobulins was noted implying either an active intra-alveolar concentration of immunoglobulins or a local synthesis. In the light of the few reported cases it seems that the diagnosis of sarcoidosis should be dismissed here in favour of multi focal granulomatosis with hypogammaglobulinaemia. In hypogammaglobulinaemia there is no clinical or biological method (IDR tuberculin, ACE, Kveim, histology) to confirm a superadded diagnosis of sarcoidosis.

[Invasive adenocarcinoma with epidermoid carcinoma on the site of bladder exstrophy. Histochemical and immunocytochemical study]. / Adénocarcinome invasif avec carcinome épidermoïde in situ sur exstrophie vésicale. Etude histochimique et immunocytochimique.

To date, one hundred and ten cases of malignant neoplasms arising from untreated bladder exstrophy have been reported. We describe another case of uncorrected bladder exstrophy with invasive adenocarcinoma and in situ squamous carcinoma discovered in a 51 year old woman. Postoperative radiotherapy was performed after cystectomy with nephroureterectomy and hysterectomy. The neoplastic samples were investigated by mucin histochemistry and immunocytochemistry. The epithelium lining the tumor villi and the surrounding mucosae was colonic with mucin histochemistry and reacted to anti KL1, EMA and ACE antibodies. These features were those of colonic and vesical adenocarcinomas. Although early vesical reconstruction is the best oncologic prevention, patients with bladder exstrophy run the risk of sigmoid adenocarcinoma after cystectomy and urinary diversion including ureterosigmoidostomy.