We discuss the elementary physics of the final state Coulomb interactions in Hanbury-Brown Twiss interferometry, showing — with explicit comparison to E877 data for
π
+
π
− and
π
±
p — that the ...Coulomb corrections in the pair correlation function can be well understood in terms of simple classical physics. We connect the classical picture with descriptions in terms of Coulomb wave functions, and investigate the influence of the “central” Coulomb potential on the pair correlation function.
Ewing tumor patients' outcome is 50% to 60% with current treatment strategies. Questions concerning toxicity and secondary malignancies are of increasing importance.
631 patients were registered with ...the German EICESS study center of the European Intergroup Cooperative Ewing's Sarcoma Study, 369 patients were randomized. Treatment apart from local therapy consisted of 14 courses of Vincristine, Actinomycin D, Cyclophosphamide or Ifosfamide, Adriamycin (Doxorubicin), with or without Etoposide. First results concerning event-free survival (EFS), toxicity, and the rate of secondary malignancies three years after diagnosis are presented.
Three year EFS was 0.66 for patients with localized tumors, 0.43 for patients with primary pulmonary/pleural metastases, and 0.29 for patients with other metastases, respectively. Large tumor volume or pelvic site, especially if inoperable, were adverse prognostic factors. Both histological and MRT-defined response were positively correlated to outcome. Up to 67% of patients experienced WHO grade IV toxicity, mostly related to bone marrow depression. The treatment related mortality was 1% (6/631). Until 15.02.1999, six of 687 patients have suffered secondary malignancies, two of six after (additional) myeloablative therapy.
EICESS 92 treatment is toxic, but manageable and compares favorably to international results. New strategies must be sought for certain risk groups of patients.
Precise measurement of the parasite load in helminthic infections makes it possible to correlate morbidity, the individual response to treatment, and the best control methods. A membrane filtration ...technique was recently developed for quantifying Wuchereria bancrofti microfilaraemia. The present paper describes its application to onchocerciasis in a study on 107 patients in northern Togo. The technique is cheap and simple to apply under field conditions, and is extremely efficient at recovering microfilariae from skin snips.
A new membrane filter concentration technique for the detection and quantification of Onchocerca volvulus microfilariae in skin snips was compared for sensitivity and efficiency with a widely used ..."standard" technique. A field study was carried out in five villages in an onchocerciasis focus north-east of the town of Sokodé, Mô river valley, Togo. Use of the new technique resulted in a substantial rise in the observed prevalence and density of microfilariae.
41 patients presenting with primary metastatic Ewing's sarcoma or malignant peripheral neuroectodermal tumor (PNET) with initial metastases restricted to the lungs and/or pleural space were analysed ...with respect to clinical manifestation and treatment results retrospectively. All patients were treated according to the protocols CESS 81 and CESS 86 of the German Society of Pediatric Oncology and Hematology (GPOH). The time since diagnosis ranges from 19 to 137 months, with a median of 72 months. Median relapse-free survival time was 21.8 months. 18 patients were female, 23 were male. The majority of primary tumors exceeded 100 ml of volume. Preferred sites were the pelvis with 16 cases, the limbs with 14 cases and the chest wall with 6 cases. The histological specification of the tumor was Ewing's sarcoma in 22 and PNET in 11 patients, in 8 cases no specific distinction was given. As to local therapy of the primary tumor, 12 patients underwent radiotherapy, 11 surgery, and 18 a combination of both. Patients were allocated to one of these three options on an individual basis. Cytostatic drug treatment was given according to the GPOH-CESS 81 and CESS 86 protocols. As calculated by means of the Kaplan-Meier analysis, relapse-free survival was 30% ten years after diagnosis. Surgery or pulmonary irradiation of 12-20 Gy was applied to lung metastases. 12 of 27 patients are in continuous complete remission following this therapeutic approach.
In two years 359 patients with breast cancer were evaluated in a cooperative follow-up programme in which the organisation and documentation were done in hospital, the medical care and investigations ...by the family doctor. 72% of 316 evaluable patients remained in regular control. 63% chose the family doctor for follow-up while the others preferred hospital. In the first year 71-80% attended their appointments, in the second year 60-74%. Statistically significant parameters for detection of metastases were the following: general condition, local signs, palpable lymph nodes, markedly increased ESR, alkaline phosphatase, chest radiograph, and bone scan. Cumulative freedom from recurrence in the whole group diminished from 1.0 to 0.631 in 25 months, cumulative survival from 1.0 to 0.876 in 20 months. In both groups there were significant differences between stages I, II and III. Forty patients (16%) out of 250 developed a recurrence within 2.25 years, in five (2%) a second carcinoma developed. There was a high proportion of local recurrences (20 out of 40) and these often led to generalised disease (11 out of 20).
The membrane concentration filtration technique which has proved very successful in use in areas of subperiodic filariasis in the Pacific, has been used to study an area of nocturnally periodic in ...Togo. The results obtained were similar to those from areas of low endemicity in the Pacific. The method was easy to apply under field conditions in Africa and the taking of venous blood samples proved competely acceptable to a rural population in south-eastern Togo.
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