[Diagnostic workup in front of an adult thrombocytosis].

During a blood test, the discovery of thrombocytosis is a frequent phenomenon with multiple origins. False thrombocytosis linked to analytical interferences is rare but must be eliminated before confirming the anomaly. The reaction origin, often very easily demonstrated by the context and/or the presence of a biological inflammatory syndrome, is the most frequent.

[Rare sideroblastic anemias: about 2 cases, review of the literature and reminder of the main etiologies].

Sideroblastic anemias in adults are often quickly labeled as myelodysplasias. We report two unfrequent observations of secondary acquired forms. The first one is a 15-year-old girl presented with severe cytopenias.

[Diagnostic workup in front of an hypereosinophilia in 2020].

The discovery of eosinophilia above 1.5 G/L should not be considered innocuous, requiring monitoring for etiology and possible secondary organ damage. Among these, cardiac localization is the most worrying, sometimes indolent, to be systematically sought by ultrasound and magnetic resonance.

[Lymphomas in immunocompromised patients].

Immunosuppression is a well known risk factor for the development of lymphoid pathologies. The classification of these neoplasias is becoming more precise and complex, some features being common to all immunocompromised patients, primarily the important influence of Epstein-Barr virus. Whatever the origin of the immunodepression, these lymphoid proliferations are very heterogeneous, constituting a wide range between polymorphic aspects and clearly lymphomatous morphologies indistinguishable from those observed in immunocompetent subjects.

[Diagnostic workup in front of an adult monocytosis].

The discovery of a monocytosis is a frequent phenomenon, requiring confirmation by reading under a microscope by an experimented biologist, to overcome usual cytological traps such as the presence of hairy cells, promonocytes or monoblasts. In the vast majority of cases the secondary origin is very easily found by the context and/or the presence of a biological inflammatory syndrome. More rarely the diagnosis is directed towards an eosinophilic pathology or an acute leukemia.

[Monoclonal gammopathy of undetermined significance (MGUS): interpretative shades of analysis and sometimes serious clinical consequences].

The etiological assessment of a monoclonal gammopathy is currently standardized, the decisional algorithms allowing a sufficiently precise classification to consider the care, wait or therapeutic. The purpose of this review is to recall the difficulties concerning the interpretation of certain biological investigations and to point out the potential complications of monoclonal gammopathies labeled as "benign". The cooperation between clinicians and biologists is in all cases essential, allowing to propose on a case-by-case basis the best adapted explorations.

Diagnostic workup in front of an adult neutropenia.

Adult neutropenia, defined as a blood neutrophil count below 1.5 G/L, is a common condition. The most common cause of acute neutropenia is a drug-related reaction or an acute infectious disease.

[IgM Myeloma: case report and literature review].

The presence of serum monoclonal IgM is often associated with the diagnosis of Waldenström macroglobulinemia (WM) or other chronic lymphoproliferative disorders. IgM myeloma is a rare entity (0.5%).

[How I do in front of an hemolytic anemia of unknown etiology?].

The most frequent causes of hemolytic anemias are immune or infectious diseases, drug induced hemolysis, thrombotic microangiopathies, hereditary spherocytosis, glucose-6-phosphate dehydrogenase or pyruvate kinase deficiencies, thalassemia's and sickle cell disease. Sometimes no cause is found because a rarer etiology is involved. The goal of this review is to remember some unfrequent constitutional or acquired causes and to point out difficulties to avoid wrong interpretations of analysis results.

[A fatal septic shock due to Capnocytophaga canimorsus and review of literature].

Introduction: Capnocytophaga canimorsus is a Gram-negative bacterium present in normal dogs and cats mouths. It can be responsible for septic shocks after dog or cat bite, especially in asplenic patients.

Case Report: We report here a case of C.

[Diagnostic workup in front of an atypical non hemolytic anemia].

The most potential causes of "non hemolytic" anemias are iron, folate or vitamin B deficiencies, severe renal impairment, endocrine diseases, inflammation and medullary disorders. In a non-exceptionnal way no cause is found, sometimes because of a wrong interpretation of analysis results and sometimes because of a little known etiology. The goal of this review is to point out analytical difficulties and to remember some rarer etiologies.

A new case of IgE multiple myeloma with review of literature.

IgE myeloma is an extremely rare disease characterized by frequent plasma cell leukemia, little monoclonal-spike on electrophoresis, an high incidence of t(11;14) translocation and a worse survival than those with common myelomas. We report here a new case of IgE myeloma and discuss clinical presentation, biological features and therapeutic option.

[Two cases of myeloid sarcomas with review of literature].

Introduction: Myeloid sarcomas are uncommon proliferations of immature myeloid cells occurring in any extramedullary organ. We report here two cases of myeloid sarcomas in patients with, respectively, a polycythemia vera and a myelodysplastic syndrome.

Case Reports: The first is an 81-year-old woman who presented with osteolytic lesions.

Polyethylene stent blockage: a porcine model.

Background: Endoscopic insertion of biliary stents is a useful treatment for obstructive jaundice resulting from unresectable tumors of the pancreas and biliary tree. The main drawback is the recurrence of jaundice due to clogging. The aim of this study was to establish an experimental model of polyethylene stent clogging in large white pigs.

Performance of native and recombinant antigens for diagnosis of Helicobacter pylori infection.

The aim of this study was to evaluate the performance of three antigenic preparations for serological diagnosis of Helicobacter pylori infection: (i) native antigens from Helicobacter pylori strain N6 or its aflagellated isogenic mutant N6flbA-, or an acellular extract (antigen AgFA) from a pool of six clinical strains; (ii) recombinant antigens consisting of CagA fused to MS2 polymerase and HspA or recombinant UreA and UreB fused to the maltose-binding protein, and (iii) the preparations provided with two commercial kits, the Cobas Core (Roche Diagnostic Systems, France) and the Pylori Stat (BioWhittaker, Belgium). All preparations were used in an enzyme immunoassay to test 92 sera from dyspeptic patients for whom the status of Helicobacter infection was established. Sensitivities were higher (90 to 100%) for the native antigens and the commercial kits than for the recombinant antigens.

A 1-year study of antibiotic resistance among paediatric pneumococcal isolates in 1995 from four regions of France.

The main object of this study was to describe the features of antibiotic resistance in pneumococci from children in four regions of France in 1995. Despite the high prevalence (40%) of pneumococci with diminished susceptibilty to penicillin (PDSP), resistance to amoxycillin (0.8%) and cefotaxime (0.

[Pneumococcal infections in the adult population observed at the Poitiers University Hospital. Epidemiologic and clinical study].

Objectives: The aim of this study was to assess the prevalence of penicillin-nonsusceptible pneumococcus (PNSP) infections and their clinical and microbiological features among an adult population hospitalized at the Poitiers University Hospital.

Patients And Methods: A prospective study was conducted between November 1994 and October 1995 and included all pneumococcus infections.

Results: Fifty-three adults with one pneumococcal strain were included.

Characterization and gene sequencing of a 19-kDa periplasmic protein of Campylobacter jejuni/coli.

In order to study a 19-kDa protein (p19) of Campylobacter jejuni, we purified this protein to homogeneity from C. jejuni strain 81,176 by anion exchange chromatography. The molecular weight of the native protein is 19,000 daltons.

Use of immunoblot assay to define serum antibody patterns associated with Helicobacter pylori infection and with H. pylori-related ulcers.

Serology has been used worldwide to detect Helicobacter pylori infection. Using an immunoblot assay with an antigen from strain ATCC 43579, we sought to determine the antibodies which were good markers of colonization and the antibody patterns associated with ulcers or atrophy. Out of 98 dyspeptic patients, 41 were colonized by H.

Meningitis due to enterotoxigenic Bacteroides fragilis.

An enterotoxigenic strain of Bacteroides fragilis was the sole organism isolated from the cerebrospinal fluid of a two-and-a-half-month neonate who had a medullary-colonic fistula as part of a complex congenital malformation, but no brain abscess. A rapid latex particle agglutination test for detection of bacterial antigen was positive for Haemophilus influenzae type b, suggesting that Bacteroides fragilis and Haemophilus influenzae type b might share some capsular antigens. In order to determine the role of the enterotoxin with respect to virulence of the strain, antibodies to a 20 kDa protein were sought in the patient's serum, but Western blot of the culture supernatant revealed only antibodies to a 45 kDa bacterial protein.

[Leptospirosis in Mayotte].

We have got 42 leptospirosis cases from 1984 to 1989, in a retrospective study. The annual incidence is now, in a very high level (3.8/10,000 pers.