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263. Adjuvante portale Chemotherapie bei colorectalen Carcinomen, eine multizenterstudie der schweizerischen arbeitsgemeinschaft für klinische krebsforschung (SAKK) (1987)

Laffer, U. ; Metzger, U. ; Aeberhard, P. ; [et al.]

Springer

Langenbeck's archives of surgery 372 (1987), S. 889-889

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ISSN: 1435-2451

Keywords: Adenocarcinoma of the colon and rectum ; Adjuvant perioperative liver infusion ; Liver metastases ; Colorectales Carcinom ; Adjuvante, perioperative Chemotherapie ; Lebermetastasen

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Description / Table of Contents: Zusammenfassung Untersucht wird beim colorectalen Carcinom die Wirkung einer perioperativen portalen Leberperfusion mit 5-Fluorouracil und Mitomycin C. Zur Zeit sind 409 Patienten auswertbar, 202 im Kontroll- und 207 im Behandlungsarm. Die bisherigen Resultate (März 87), bei einer Beobachtungszeit von 35 Monaten, zeigen im Behandlungsarm eine deutlich geringere Tendenz für Lebermetastasen (10,4% vs 6,3%), besonders auch in den Untergruppen (Colon 11,5% vs 6,8% und Dukes' C: 22,2% vs 6,9%). Entsprechend ist auch der Carcinom-Tod seltener (14,4% vs 12,1%; 15,8% vs 8,5% und 25,4% vs 15,5%). Die Beobachtungszeit ist für eine statistische Analyse noch zu kurz.

Notes: Summary The efficacy of adjuvant, perioperative portal liver infusion with 5-fluorouracil and mitomycin C was investigated (409 patients, 202 control subjects, 207 treated). Liver metastases were detected in 10.4% of the untreated vs 6.3% of the treated patients. The median follow-up was 35 months. For the colon subgroups (excluding the rectum) and Dukes' C tumors alone, the corresponding results were as follows: 11.5% vs 6.8% and 22.2% vs 6.9%, respectively. Death from progressive cancer disease occurred in 14.4% vs 12.1% of all patients: 15.8% vs 8.5% (colon) and 25.4% vs 15.5% (Dukes' C), respectively. The follow-up time is too short for statistical analysis, however.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01298047

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New high temperature stable positive photoresists based on hydroxy polyimides and polyamides containing the hexafluoroisopropylidene (6-f) linking group (1989)

Khanna, D. N. ; Mueller, W. H.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 29 (1989), S. 954-959

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ISSN: 0032-3888

Keywords: Chemistry ; Chemical Engineering

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: In this paper we describe the synthesis, characterization, and lithographic evaluations of novel positive photoresists based on hydroxy polyimides and polyamides containing 6-F linking groups. The polymers were synthesized using solution condensation techniques and characterized using solution viscosity, GPC, FTIR, NMR, UV, TGA, and DSC. Tg's of these polymers range from 250 to 300°C. Both polyimides and polyamides are soluble in a variety of solvents commonly utilized for photoresist applications. When formulated with diazonaphthoquinone sensitizers, these polymers provide an improved high-temperature resistant, aqueous base developable positive photoresist system with good photospeed, contrast, and resolution characteristics. High resolution relief images were obtained which are comparable to 1300 Series AZ type photoresists. No thermal deformation, loss in resolution or defects were noticed when relief patterns were annealed to 250°C. Additionally, the hydroxy polyamide based resists, when thermally annealed to 300°C, provide a photoresist system with even higher thermal stability (400 to 450°C) and excellent resistance to solvents. Also, the photoresist formulations have excellent storage stability at room temperature and can be processed like conventional positive photoresists using broad band UV radiation sources.

Additional Material: 7 Ill.