[Blue rubber-bleb nevus syndrome and therapeutic double balloon enteroscopy]. / Blue-Rubber-bleb-Naevus-Syndrom und therapeutische Doppel-Ballon-Enteroskopie.

This is the first report about the endoscopic removal of hemangiomas in the gastrointestinal tract using the double-balloon enteroscopic technique. We report on a 16-year-old female patient with a 10-year history of chronic anemia due to recurrent gastrointestinal bleeding. Besides permanent iron substitution, up to 3 blood transfusions per week are necessary. At birth a blue rubber-bleb nevus syndrome was diagnosed, with blue angiomatous lesions preferring her skin and digestive tract. In the 8 years before admittance numerous conventional endoscopic procedures and one intraoperative endoscopy with laser coagulation of many cavernous hemangiomas were performed. In our department the successful treatment of 150 hemangiomas with argon plasma coagulation or polypectomy in combination with double-balloon enteroscopy and conventional endoscopy was achieved without complications.

[Percutaneous carotid angioplasty with stent implantation and protection device against embolism--a prospective study of 100 consecutive cases]. / Perkutane Karotisangioplastiemit Stentimplantation und Embolieprotektion--Eine prospektive Studie bei 100 konsekutiven Behandlungen.

BACKGROUND AND OBJECTIVE: Percutaneous transluminal angioplasty and stenting of internal carotid artery stenosis has been increasingly practiced as an alternative to carotid embolectomy, particularly since the development of cerebral protection devices. 100 consecutive elective percutaneous carotid stenting procedures were carried out in our centre. We here present the clinical outcome and follow-up of these patients. PATIENTS AND METHODS: 69 men and 22 women, average age 69 +/- 10 years with symptomatic (41 %) or asymptomatic and progressive (59 %) > 80 % stenosis of the internal carotid artery were treated. There was a high rate of co-morbidity and a high vascular risk. 64 % would have been excluded from the NASCET trial because of one, 31 % because of two or more contraindications. In 84 % of the patients symptomatic coronary artery disease was present, in 13 % a significantly reduced left ventricular function (LVEF < 40 %).Pre- and post-procedure all patients were given aspirin and clopidogrel and examined by an independent neurologist. 99 stents were placed with the use of an embolic protection device (28 times with distal balloon occlusion, 72 times with a filter device).The follow-up period averaged 10.4 +/- 8.2.(1 - 29 months). RESULTS: The angiographic success rate was 99 %. During the procedure transient neurological symptoms were experienced by 4 % of patients (2x TIA,2x PRIND) and a minor stroke resulted in two. In 90 % of the interventions debris was collected from the embolic protection device. The maximum diameter of particles was 311+/-431 (30 - 1850) micro m. There was some correlation between patients' symptoms prior to stent implantation and maximum particle size (p < 0,04),but none with any other angiographic or clinical parameters. The combined endpoint (death and any stroke) after 30 days occurred 5 times (5 %). A subacute stent thrombosis occurred once, restenosis in two patients. CONCLUSION: Carotid artery stenting with use of a distal embolic protection device is a feasible new alternative to carotid endarterectomy. Our results indicate high success rate and low complication rates, even in patients with severe co-morbidity. The results compare well with surgical figures. Our favourable results are supported by data emerging from current randomized multicenter trials and a large therapy registry. However, long-term follow-up will still be required.

Preclinical activity of 17 beta-[N-[N'-(2-chloroethyl)-N'-nitrosocarbamoyl]-L-alanyl]-5 alpha-dihydrotestosterone (E91) against tumour colony forming units and haematopoietic progenitor cells.

E91 (17 beta-[N-[N'-(2-chloroethyl)-N'-nitrosocarbamoyl]-L-alanyl]-5 alpha-dihydrotestosterone) (CNC-ala-DHT) is a newly synthesised alkylating compound consisting of N-[N'-(2-chloroethyl)-N'-nitrosocarbamoyl]-L-alanine (CNC-ala) as the alkylating moiety and of 5 alpha-dihydrotestosterone (DHT) as a steroid carrier molecule. We studied the antitumour activity of E91 (final concentrations: 0.1, 1, 10 and 30 mumol/l) against freshly explanted human tumours, using an in vitro soft agar cloning system. A total of 54 tumour samples was evaluated using 1 h-exposure and 51 tumour specimens were studied using a continuous exposure for 21-28 days. In addition, the compound's activity was compared with other clinically used anticancer agents. After short-term exposure, 49 of 53 evaluable specimens (92%) had adequate colony formation, as compared with 49 of 50 (98%) after long-term exposure. After short-term exposure, E91 exhibited only marginal antitumour activity. However, in long-term exposure experiments, E91 had marked and concentration-dependent antitumour activity (P < 0.001). At concentrations of > 10 mumol/l, E91 was as active as the other clinically used antineoplastic agents and at 30 mumol/l, E91 was significantly more active than 5-fluorouracil (P = 0.041). E91 showed activity against a wide spectrum of tumour types. The highest activity was observed against colorectal carcinomas (3/4 tumour specimens inhibited at 30 mumol/l). Sensitivity was also high remarkable in breast cancer specimens with 3/6 specimens inhibited at 30 mumol/l. In vitro myelotoxicity was less than that of doxorubicin. At 30 mumol/l, E91 induced a reduction of colony forming units-granulocyte macrophage (CFU-GM) to only 53% of control and of CFU-GEMM to 20% of control. We conclude that because of broad activity and reduced myelotoxicity further clinical development of E91 appears warranted.

[Fibroepithelial polyp of the kidney pelvis]. / Fibroepithelialer Polyp des Nierenbeckens.

Benign fibroepithelial polyps of the renal pelvis are rare. Because of suspected malignancy in imaging procedures an ureteronephrectomy was carried out in the reported case. Histology, however, yielded no evidence of malignancy. The diagnosis of benign fibroepithelial polyp was entertained. It remains an open question whether the pathologic changes represent a hamartoma or a reactive postinflammatory process, revealing primitive myxoid stroma within the polypous portion and increasing fibrosis with diffuse submucosal involvement of the ureteral basis.

[Fatal course of juvenile chronic arthritis]. / Fataler Verlauf einer juvenilen chronischen Arthritis.

Case report of a young man suffering from seropositive juvenile arthritis who succumbed to the consequences of cerebral vasculitis. Postmortem generalised arteritis was found affecting mainly brain and kidneys. There were no laboratory signs of an inflammatory process during the months before his death nor hypergammaglobinaemia or decrease of complement. The generalised arteritis manifested itself solely as mononeuritis multiplex with eosinophilia. Thus even with discrete signs such as these severe vasculitis ought to be considered for appropriate treatment to be instituted.

Is motilin a cerebellar peptide in the rat? A radioimmunological, chromatographic and immunohistochemical study.

Motilin was demonstrated by the immunoperoxidase technique in endocrine cells of the gastrointestinal tract using several specific antisera. Motilin-like immunoreactivity could only be demonstrated with one of these antisera and was observed in Purkinje cells and dendrites of the cerebellum, in pyramidal cells and dendrites of the cerebral cortex and in dendrites of the CA 3 field of the hippocampus of the rat. Very low motilin-like immunoreactivity was found in cerebellum as well as in cerebral cortex using radioimmunoassay. However, using reverse phase liquid chromatography combined with UV-detection and radioimmunoassay, no peak of a peptide corresponding to synthetic motilin was detectable in rat cerebellar extracts, in contrast to findings in rat duodenum. The results do not suggest that motilin is an intrinsic neuroactive substance of the cerebellum.

[Papillary fibroelastoma of the aortic valve. Sudden death caused by an uncommon tumor of the heart]. / Papilläres Fibroelastom der Aortenklappe. Plötzlicher Tod bei seltenem Tumor des Herzens.

We describe a very rare tumor of the heart with a pendulous papillary fibroelastoma of the aortic valve, obstructing the ostium of the LCA - resulting in the sudden death of a healthy 40-year-old man. Acute severe ischemia was registered in the ECG a few minutes before death - corresponding especially to the myocardial regions perfused by the LCA. There is no doubt from the post mortem findings that the sudden death of this patient was caused by occlusion of the left coronary ostium by the pendulous papillary fibroelastoma.