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Bilateral sleeve lobectomy for metachronous multiple primary lung cancer (1986)

Watanabe, Yoh ; Kobayashi, Hiroaki ; Murakami, Shinya ; [et al.]

Springer

Surgery today 16 (1986), S. 56-61

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ISSN: 1436-2813

Keywords: lung cancer ; sleeve lobectomy ; metachronous multiple cancer ; high frequency ventilation ; immunochemotherapy

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract In a patient with metachronous multiple primary lung cancer, bilateral lobectomy was performed, using bronchoplastic procedures. This case may be one of very few such cases reported in the literature. A 56-year-old man with squamous cell carcinoma was surgically treated for lung cancer. At the first operation, right upper lobectomy with wedge resection of the right main bronchus was performed, as the tumor occupied the orifice of the right main bronchus. Six months later, re-operation for stricture at the anastomotic line was done because of granulation. By means of sleeve resection of the strictured right main bronchus, the airway was reconstructed. The patient remained well for five years, then a similar cancer at the orifice of the left lower lobe and bulging into the left main bronchus became evident. Left lower sleeve lobectomy was done for the second primary cancer. The postoperative course was uneventful and he is well with no signs of recurrence 6 years and 10 months after the first operation and 19 months after the second sleeve lobectomy

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02471071

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Formation of an amorphous powder during the polymerization of ethylene in a radio-frequency discharge (1973)

Kobayashi, Hiroaki ; Bell, Alexis T. ; Shen, Mitchel

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 17 (1973), S. 885-892

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ISSN: 0021-8995

Keywords: Chemistry ; Polymer and Materials Science

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: An investigation has been carried out to determine the influence of operating conditions on the character of the final product resulting from the polymerization of ethylene in a radio-frequency discharge. It has been found that low pressures and high ratios of discharge power to gas flow rate lead to the deposition of a powder as well as a film. From visual observations of powder deposition, it has been possible to divide the plane formed by the axis of pressure and flow rate into a region in which powder is deposited together with a film and a region in which only a film is deposited. Numerous physical measurements have been carried out in order to characterize the powder. From these measurements, it has been concluded that the powder is a relatively dense, amorphous, and highly crosslinked polymer composed of short-chain segments containing no more than two adjacent methylene groups. Many forms of unsaturation have been observed which, together with the high crosslink density, explain the measured hydrogen-to-carbon ratio of 2.7 to 2. Evidence of oxidation has been observed through the appearance of hydroxyl and carbonyl bands in the infrared spectrum of the polymer. A mechanism for the formation of the powder has been proposed which suggests that the polymerization of the powder takes place totally in the gas phase.

Additional Material: 4 Ill.