The occipital-vertebral anastomosis revisited.

BACKGROUND: The goal of the study was to provide relevant data about the location and prevalence of the occipital artery-vertebral artery (OA-VA) anastomosis in patients without visible occlusive disease, as well as to thoroughly discuss the clinical significance of these anastomotic channels. Furthermore, the morphometric properties of the OA and its branches were also analysed. MATERIALS AND METHODS: A retrospective study was carried out to indicate anatomical variations, their prevalence, and morphometrical data on the OA and its branches. The study was performed on 55 randomly selected computed tomography angiographies (CTA) of the head and neck region. Each CTA result was analysed bilaterally. Thus, 110 results were originally assessed. RESULTS: The OA median maximal diameter was demonstrated at 4.85 mm (lower quartile [LQ]: 4.11; upper quartile [UQ]: 5.53) and the median maximal diameter of VA at 3.60 mm (LQ: 2.79; UQ: 4.38). The distances between OA and its branches were also measured giving a median result of 21.73, 30.29, 60.84, 34.88, 18.02, 55.16 mm for the lower and upper sternocleidomastoid branch, meningeal branch, mastoid branch, and descending branch, respectively. The median distance between OA and its first anastomosis was set to be 51.15 mm (LQ: 37.20; UQ: 60.10). Moreover, a set of additional measurements was carried out in order to create a three-dimensional anatomical heat-map of the occurrence of the OA-VA anastomosis. CONCLUSIONS: Knowledge about the anatomy of the OA-VA anastomosis might be of immense importance to avoid potentially fatal complications during embolisation of the OA and its branches.

Outcomes and mutational analysis of patients with lower-risk non-del5q myelodysplastic syndrome treated with antithymocyte globulin with or without ciclosporine A.

Immunosuppressive treatment is a disease-modifying therapy for lower-risk myelodysplastic syndromes (MDS). However, IST is relatively rarely used and long-term outcomes of patients are seldom reported. We retrospectively studied outcomes of 20 patients with lower-risk non del 5q MDS with transfusion dependency, with horse or rabbit antithymocyte globulin ±â€¯ciclosporine A, and frontline eltrombopag in two of them. IPSS-R was low, intermediate and high in 30%, 55% and 10% of the patients, respectively. Fifty-five percent of the patients had hypocellular bone marrow (BM). Baseline mutations were detected in 31.5% of the patients and were more frequent in patients with normo/hypercellular MDS than in patients with hypocellular MDS. Transfusion independence rate for both red blood cells (RBC) and platelets was achieved in 45% of patients. RBC transfusion duration ≤6 months, B-cell counts >0.2 G/L and, marginally, BM blasts ≤2% were associated with higher transfusion independence rate. Age and cellularity did not influence the response rate. Median transfusion independence duration was 53 months. Cumulative incidence of progression to a more aggressive myeloid disease was 0 in patients without baseline mutations and 33% in patients with baseline mutations (P = .008). Median progression-free and overall survival after treatment onset and median overall survival after loss of transfusion independence were 45.5 months, 68 months and not reached, respectively. In conclusion, antithymocyte globulin ±â€¯ciclosporine A results in durable responses in MDS, irrespective of age, in patients with lower-risk disease without B-cell lymphopenia and treated early in the course of the disease.

Dicentric chromosome 3 associated with binucleated lymphocytes in atypical B-cell chronic lymphoproliferative disorder.

Binucleated lymphocytes on blood smear are known in PPBL characterized by stable and polyclonal lymphocytosis, polyclonal increase of serum IgM, HLA DR7 and strong correlation with additional i(3q) and premature chromosome condensation. In this disorder some reports of clonal Ig rearrangement suggest a follow up of these patients with immunological and genetic studies. Binucleated lymphocytes are rarely described in other clonal B-CLPD as B-CLL or marginal zone B-cell lymphoma (MZL). Chromosome 3 abnormality is never described in B-CLL but trisomy 3 represents the most consistent abnormality characterizing the MZL. We report in a man without previous medical history an unusual B-CLPD with monoclonal lymphocytosis CD5-, characteristic cytology (particularly binucleated lymphocytes) and chromosomic abnormality as dicentric chromosome 3 never previously described in B-CLPD. In this case lymphocytosis is persistent and stable over 24 months, cytologic immunologic and chromosomic abnormalities are unchanged. We discuss the nosologic place of this atypical B-CLPD closely related to PPBL and MZL with at the moment, after 24 months, a quiet evolution that imply nevertheless a careful follow up with regular cytologic, immunological and genetic studies to clarify the issue.

Airport malaria : four new cases in suburban Paris during summer 1999.

During the summer 1999, four clustered cases of airport malaria were observed in France. The cases analysis revealed that airport malaria, which is a rare disease whose diagnosis is difficult, can be observed outside occupations at risk, in people livin

[Pancreatic involvement, ascites and diarrhea in idiopathic hypereosinophilic syndrome]. / Atteinte pancréatique, ascite et diarrhée au cours d'un syndrome hyperéosinophilique idiopathique.

We report a new case of idiopathic hypereosinophilic syndrome with multivisceral digestive failure. After an erroneous diagnosis of pancreatic cancer, the pathological examination of pancreaticoduodenectomy specimen demonstrated pancreatic fibrosis with eosinophilic infiltration without gastritis or duodenitis. The diagnosis of idiopathic hypereosinophilic syndrome was made three months later upon the classical criteria: a) blood eosinophilia of 1.5 G/L or more, persisting for more than 6 months; b) lack of evidence for any other recognised cause of eosinophilia: c) multiple organ systemic involvement: rheumatologic, cutaneous and digestive (pancreatitis, ascites and diarrhoea): d) previous history of allergic disease and increased plasmatic IgE levels; e) absence of leukemic markers. This case emphasises the difficulty in classifying eosinophilic infiltration of the gut and the possibility of transitional forms between eosinophilic gastro-enteritis and idiopathic hypereosinophilic syndrome. We argue that in case of eosinophilic infiltration of the gut, systematic research of multiple organ systemic involvement is mandatory.

Molecular characterisation of airport malaria: four cases in France during summer 1999.

Four airport malaria cases have been observed in the vicinity of the Roissy-Charles-de-Gaulle International Airport, Paris, France. These cases were geographically very close to each other and clustered in a short period of time during the summer of 1999. The phenotype and genotype of the Plasmodium falciparum isolates obtained from these patients were determined in order to know whether a single mosquito could have infected more than one subject. The genomic characterisation of isolates was performed using the polymorphic markers merozoite surface protein 1 (Msp 1) and merozoite surface protein 2 (Msp 2) genes, the kappa and omega repeats domains of cg2 and the dihydrofolate reductase (DHFR) genotypes. Results showed identical genotypes for isolates 1, 2 and 4 whereas the genotype of isolate 3 differed at one locus. The molecular analysis was consistent with the hypothesis that all patients could have been bitten by the same mosquito and that patient 3, may have received a different clone and an additional species. In vitro susceptibility data did not confirm or rule out this hypothesis because isolates had the same profile of susceptibility to the tested drugs.

[Biological diagnosis of malaria: dangers of the automated blood differential count]. / Diagnostic biologique du paludisme: dangers de l'automatisation de la formule sanguine.

Automated differential counting systems deprive laboratories of blood smear study and so malaria risks not to be diagnosed if plasmodium search is not prescribed by the physician. Some abnormalities (atypical lymphocytes called LUC and thrombopenia) can induce a blood smear. But a study of 96 patients shows that, during the first analysis, these abnormalities can miss for nearly a third of one's case. So it is very important to prescribe malaria search on blood smears when there is the least clinical symptom.

[CD8 hyperlymphocytosis syndrome and human immunodeficiency virus infection: 5 cases]. / Syndrome d'hyperlymphocytose CD8 et infection par le virus de l'immunodéficience humaine: cinq observations.

A retrospective study on 202 consecutive patients with HIV infection was reviewed. A particular syndrome with blood CD8 lymphocytosis > 1 500/mm3, associated with a diffuse lymphocytic infiltrate histologically proved in the tissue of different organs was present in five patients. Clinical findings were variable, depending on the location of visceral infiltrate by activated, polyclonal lymphocytes of CD8 phenotype: interstitial pneumonia (n = 3), parotid gland enlargement with sicca syndrome (n = 2), pseudo-tumoral splenomegaly (n = 1), peripheral neuropathy (n = 1), superficial generalized lymphadenopathy (n = 5). This syndrome occurred early during HIV infection. All patients had a blood CD4 lymphocyte count > 200/mm3. This disorder is a host immune response, sometimes associated with the presence of some HLA antigens: HLA-DR5 or HLA A1 B8 DR3. Whether this immune response is specific or not, whether outcome of HIV infection depends on hyper CD8 lymphocytosis remains to be proved.

[Doppler velocimetry in the umbilical, middle cerebral and aortic arteries, before and after cordocentesis]. / Vélocimétries Doppler des artères ombilicales, cérébrales moyennes et aortiques, avant et après cordocentèse.

OBJECTIVE: Prospectively evaluate the effect of cordocentesis on the umbilical, fetal cerebral and aortic circulation. METHOD: Fetal blood was sampled for diagnostic purposes in 21 pregnant women at 21 to 38 weeks gestation. Ten patients undergoing amniocentesis served as controls. The resistance index (RI) in the umbilical and middle cerebral arteries and the mean blood velocity (Vm) in the descending aorta were measured with pulsed Doppler before and after blood sampling. Variations in umbilical and cerebral RI and in aortic Vm were recorded. RESULTS: There was a significant drop in both umbilical RI (mean +/- SD = -0.049 +/- 0.078; p = 0.009) and middle cerebral RI (-0.077 +/- 0.058; p < 0.0001) after cordocentesis. The drop in umbilical RI was greater when the second Doppler measurement was made early, when the blood was sampled transplacentally and in early gestational age. Reduction in fetal cerebral artery RI was also greater for transplacental puncture. The fetal descending aorta Vm did not change significantly after blood sampling. There were no variations in Doppler index before and after amniocentesis. CONCLUSIONS: Changes in blood flow velocity waveforms as measured by pulsed Doppler in the umbilical and fetal cerebral arteries can be induced by fetal blood sampling. Decreased resistance in the placenta and fetal circulation would imply release of nitric oxide.

[Interepidemic surveillance of a cutaneous leishmaniasis focus in Senegal]. / Surveillance interépidémique d'un foyer de leishmaniose cutanée au Sénégal.

The cutaneous leishmaniasis is rampant in an endemo -epidemic way in the region of Thiès, Senegal. At the occasion of an epidemic observed between 1975 and 1978, the ecological study of the focus of Keur Moussa , led by Dedet and al., permitted to discover, for the first time in West Africa, the structure of a cutaneous leishmaniasis focus. The most important part of the present laboratory work consists in the observation of that wild anthropozoonosis due to Leishmania tropica major, having as vector Phlebotomus duboscqi and the rodents Mastomys erythroleucus , Tatera gambiana and Arvicanthis niloticus as reservoir. The close study of the reservoir populations and of the vectors should enable us to avoid a new epidemic outburst.

Schistocytes in disseminated intravascular coagulation.

INTRODUCTION: The presence of schistocytes on the peripheral blood film during disseminated intravascular coagulation (DIC) remains controversial. METHODS: We examined schistocytes count on blood films from 35 DIC patients and checked morphological anomalies of all RBCs. RESULTS: Thirty of 35 patients presented with schistocytes and 22 with acanthocytes, which was the commonest shape anomaly. Mean percentage ± standard deviation was 0.33 ± 0.38%, median value was 0.1%, and range was 0-1.4%. The patients with schistocytes ≥ 1% had circumstances frequently associated with increased schistocytes count (promyelocytic leukaemia, pregnancy, severe infection). DISCUSSION: Schistocytes were thus frequently observed in DIC patients, usually with low percentage, within or close to the reference range (<0.5%). Schistocytes measurement is not a clue test for the initial diagnosis of DIC, but might be of clinical value to suggest an associated or underlying thrombotic microangiopathy if ≥ 1%.

[Epidemiology of aminoglycoside resistance in Streptococcus except in group D Streptococcus and Enterococcus]. / Epidémiologie de la résistance aux aminosides de Streptococcus à l'exception des streptocoques du groupe D et des entérocoques.

During a ten month period (march-december 1989), all streptococcal strains isolated from clinical specimens sent to our laboratory were routinely tested for high-level resistance to aminoglycosides. High-level resistance was detected in 16 out of 475 streptococci: streptomycin (two strains), kanamycin (four strains), streptomycin and kanamycin (ten strains).

Plasma cell leukaemia mimicking acute monocytic leukaemia in the course of multiple myeloma.

We report a case of acute leukaemia occurring early in the course of IgA multiple myeloma. Ultrastructural studies, immunophenotyping and karyotyping were required to identify the origin and clonality of the leukaemic cells. Although ultrastructural examination of the blast cells revealed both monocytoid and plasma cell features, all cells expressed the CD 38 antigen and intracytoplasmic kappa light chains, while karyotyping revealed a clone with numerous abnormalities, leading to the diagnosis of clonal plasma cell disease. The occurrence of leukaemia in multiple myeloma is discussed.

Changes in umbilical artery, middle cerebral artery, and aorta blood flow Doppler waveform pulsatility indices after funisocentesis.

This study evaluates the effect of funisocentesis on umbilical artery, fetal cerebral artery, and aortic circulation. The pulsatility index in the umbilical artery, fetal middle cerebral artery, and descending aorta was measured by pulsed Doppler ultrasonography before and after 41 diagnostic funisocenteses. Percutaneous umbilical artery blood sampling was associated with a significant decrease in umbilical artery pulsatility index (mean -0.132, standard deviation 0.259, P = 0.002) and in middle cerebral artery pulsatility index (mean -0.143, standard deviation 0.260, P = 0.001). The decline in resistance to flow of the umbilical artery (r = 0.340, P = 0.029) and middle cerebral artery (r = 0.457, P = 0.002) was correlated with gestational age at sampling. These findings suggest that alterations in the waveforms from both the umbilical and the fetal cerebral circulations can be induced by fetal blood sampling.