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Multiple myeloma of IgG kappa type was diagnosed in a 42-year-old man with bone pains, dyspnoea on exertion and increasing drowsiness. Six chemotherapy cycles extending over 14 weeks and consisting of 15 mg/m2 melphalan intravenously on day 1 and 60 mg/m2 prednisolone orally on days 1-4 produced a partial remission. As the HLA-identical sister of the patient was willing to donate bone marrow, an allogeneic marrow transplantation was planned. After 7 days' conditioning treatment (hyperfractionated whole-body irradiation with 12 Gy, chemotherapy with 70 mg/m2 melphalan and 60 mg/kg cyclophosphamide), 4.2 x 10(8) nucleated cells of donor marrow were infused per kg recipient body-weight through a central venous catheter. Despite prophylaxis with short-course methotrexate and cyclosporin, an acute graft-versus-host reaction of grade II-III occurred on day 26, though it settled almost completely after treatment with daily 2 mg/kg prednisone and monoclonal interleukin-2 receptor antibodies (B-B10, daily 10 mg). On day 100 after the marrow transplantation, marrow puncture showed the picture of complete remission with normal regeneration of haemopoietic cells. Allogeneic marrow transplantation may therefore be considered as a new and promising mode of treatment for younger patients with multiple myelomas.

A 48-year-old woman required mechanical ventilation after aortic valve replacement for decompensated aortic valve stenosis when bleeding complications developed and rethoracotomy had to be performed. Acute renal failure necessitated haemodialysis. Septic fever of unknown aetiology failed to respond to oxacillin, cefotaxim and tobramycin. The endotracheal cannula and central venous catheter were changed on the 24th postoperative day and the antibiotic treatment altered to 250 mg imipenem and 125 mg vancomycin three times daily intravenously. The fever soon subsided, but recurred on the 32nd postoperative day, accompanied by increasing leucocytosis. The patient was obstipated but had no intraabdominal signs. Four days later ultrasonography demonstrated thickening of the intestinal wall and coloscopy showed typical pseudomembranous colitis. Intestinal contents were positive for Clostridium difficile toxin. Despite immediate rectal and intragastric administration of 250 mg vancomycin four times daily the patient died of pseudomembranous colitis, confirmed at autopsy. The case demonstrates that vancomycin cannot always prevent the development of pseudomembranous colitis.

An 82-year-old woman developed acute neuropsychiatric signs (confusion, disorders of speech and vision) together with ataxic gait and left hemiparesis mainly affecting the lower limb. For 10 years she had been known to have chronic lymphatic leukaemia (CLL) which had not hitherto needed treatment. The patient had an exceptionally high leucocyte count (1,300,000/microliters), most of the cells being morphologically atypical lymphocytes. The computed tomogram of the skull showed a marginal zone infarct with a hypodense focus in the area of the right middle and posterior cerebral arteries, extending from the cortical to subcortical zones almost as far as the posterior horn. This was interpreted as a leukostasis syndrome with cerebral infarction due to rapid progression of the CLL. Significant reduction of leucocyte count with considerable improvement in clinical signs was achieved after three doses of vincristine and prednisone together with one cycle of COP (cyclophosphamide, vincristine, prednisone) therapy. Although the leucocyte count is not an important criterion in planning the therapy of CLL, in the event of rapidly increasing leucocytosis it is important to begin cytoreductive treatment in good time so as to avert the leukostasis syndrome.

A 25-year-old man, known to have chronic myeloid leukaemia for four years, acutely developed a fever of 39.5 degrees and severe pain in the shoulder and hip joints. There was no evidence of joint disease. Treatment with indomethacin briefly improved the symptoms, but within 72 hours the patient developed a fulminant illness with high fever and clinical as well as biochemical signs of a severe consumption coagulopathy. Herpetiform efflorescences appeared over the head and trunk shortly before death. At autopsy there was histological and immunohistochemical evidence of a varicella infection with hepatitis, oesophageal involvement and severe internal organ bleedings. In immune-compromised patients with atypical prodromal symptoms a varicella infection must be considered so that causal treatment with acyclovir and hyperimmune-globulin can be begun in time.