101
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Khalyavina A, Häußler L, Lederer A. Effect of the degree of branching on the glass transition temperature of polyesters. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.01.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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102
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Morell M, Foix D, Lederer A, Ramis X, Voit B, Serra À. Synthesis of a new multiarm star polymer based on hyperbranched poly(styrene) core and poly(ε-caprolactone) arms and its use as reactive modifier of epoxy thermosets. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24908] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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103
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Morell M, Voit B, Ramis X, Serra À, Lederer A. Synthesis, characterization, and rheological properties of multiarm stars with poly(glycidol) core and poly(methyl methacrylate) arms by AGET ATRP. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24751] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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104
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Morell M, Lederer A, Ramis X, Voit B, Serra A. Multiarm star poly(glycidol)-block
-poly(ε-caprolactone) of different arm lengths and their use as modifiers of diglycidylether of bisphenol a thermosets. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24670] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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105
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Boye S, Scharfenberg L, Lederer A. Separation of linear and star-shaped polystyrenes by phase distribution chromatography. J Sep Sci 2010; 33:3584-94. [DOI: 10.1002/jssc.201000499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 08/31/2010] [Accepted: 09/01/2010] [Indexed: 11/09/2022]
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106
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Boye S, Komber H, Friedel P, Lederer A. Solution properties of selectively modified hyperbranched polyesters. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.06.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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107
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Boye S, Polikarpov N, Appelhans D, Lederer A. An alternative route to dye–polymer complexation study using asymmetrical flow field-flow fractionation. J Chromatogr A 2010; 1217:4841-9. [DOI: 10.1016/j.chroma.2010.05.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 05/18/2010] [Accepted: 05/19/2010] [Indexed: 02/06/2023]
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108
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Senkovskyy V, Beryozkina T, Bocharova V, Tkachov R, Komber H, Lederer A, Stamm M, Severin N, Rabe JP, Kiriy A. A Core-First Preparation of Poly(3-alkylthiophene) Stars. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201050503] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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109
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Lederer A, Schimpl G, Schweintzger G, Jaeger T, Steiner H. A case of intrauterine right paraduodenal hernia into the fossa of Waldeyer with neonatal death. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2010; 31:302-303. [PMID: 20091467 DOI: 10.1055/s-0028-1109840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
MESH Headings
- Abdominal Wall/abnormalities
- Abdominal Wall/diagnostic imaging
- Abdominal Wall/pathology
- Duodenum/abnormalities
- Duodenum/diagnostic imaging
- Duodenum/pathology
- Female
- Fetal Diseases/diagnostic imaging
- Hernia, Abdominal/congenital
- Hernia, Abdominal/diagnostic imaging
- Hernia, Abdominal/pathology
- Humans
- Infant, Newborn
- Interdisciplinary Communication
- Intestine, Small/abnormalities
- Intestine, Small/diagnostic imaging
- Intestine, Small/pathology
- Meconium
- Obstetric Labor, Premature/diagnostic imaging
- Obstetric Labor, Premature/pathology
- Patient Care Team
- Peritonitis/diagnostic imaging
- Peritonitis/pathology
- Pregnancy
- Stillbirth
- Ultrasonography, Doppler
- Ultrasonography, Prenatal
- Young Adult
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110
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Georgi U, Erber M, Stadermann J, Abulikemu M, Komber H, Lederer A, Voit B. New approaches to hyperbranched poly(4-chloromethylstyrene) and introduction of various functional end groups by polymer-analogous reactions. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23995] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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111
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Lederer A, Schimpl G, Weisser C, Jäger T, Steiner H. Intrauterine Paraduodenalhernie und andere gastrointestinale Pathologien als peripartaler Notfall. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0030-1254935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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112
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Scholz M, Lederer A, Jäger T, Steiner H, Schimpl G. Gastroschisis: Ein perinatologischer Notfall? Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0030-1254950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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113
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Foix D, Erber M, Voit B, Lederer A, Ramis X, Mantecón A, Serra A. New hyperbranched polyester modified DGEBA thermosets with improved chemical reworkability. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.01.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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114
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Khalyavina A, Schallausky F, Komber H, Al Samman M, Radke W, Lederer A. Aromatic−Aliphatic Polyesters with Tailored Degree of Branching Based on AB/AB2 and ABB*/AB2 Monomers. Macromolecules 2010. [DOI: 10.1021/ma100037n] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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115
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Al Samman M, Radke W, Khalyavina A, Lederer A. Retention Behavior of Linear, Branched, and Hyperbranched Polyesters in Interaction Liquid Chromatography. Macromolecules 2010. [DOI: 10.1021/ma902537e] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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116
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Schulze U, Johannsen M, Haschick R, Komber H, Lederer A, Voit B. Synthesis of poly(10-undecene-1-ol) by metallocene-catalyzed polymerization. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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117
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Ghosh A, Banerjee S, Komber H, Lederer A, Häussler L, Voit B. Extremely High Molar Mass Hyperbranched Poly(arylene ether)s from a New Semifluorinated AB2 Monomer by an Unusual AB2 + A2 Polymerization Approach. Macromolecules 2010. [DOI: 10.1021/ma9028322] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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118
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Voit BI, Lederer A. Hyperbranched and Highly Branched Polymer Architectures—Synthetic Strategies and Major Characterization Aspects. Chem Rev 2009; 109:5924-73. [DOI: 10.1021/cr900068q] [Citation(s) in RCA: 942] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Lederer A, Speil-Ostheim A, Schwamberger A, Batka M. Total laparoskopische Hysterektomie mittels Hohl-Adapter®: Ergebnisse von 217 Fällen. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1186011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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120
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Erber M, Boye S, Hartmann T, Voit BI, Lederer A. A convenient room temperature polycondensation toward hyperbranched AB2
-type all-aromatic polyesters with phenol terminal groups. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23567] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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121
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Schallausky F, Erber M, Komber H, Lederer A. An Easy Strategy for the Synthesis of Well-Defined Aliphatic-Aromatic Hyperbranched Polyesters. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800346] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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122
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Denchev Z, Tomanova M, Lederer A. On the anionic homo‐ and copolymerization of ethyl‐ and butyl‐2‐cyanoacrylates. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22842] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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123
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Lederer A. SOME OBSERVATIONS ON THE FORMATION OF HYDROGEN SULPHIDE IN SEWAGE. Am J Public Health (N Y) 2008; 3:552-61. [PMID: 18008860 DOI: 10.2105/ajph.3.6.552] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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124
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Steiner H, Boemers T, Forstner R, Ofner S, Lederer A, Ruecker J. Ex-Utero Intrapartum Treatment (EXIT) in a giant case of Congenital Cystic Adenomatoid Malformation (CCAM) of the lung. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2007; 28:626-8. [PMID: 17806010 DOI: 10.1055/s-2007-963347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Congenital Cystic Adenomatoid Malformations (CCAM) of the lung are a relatively rare anomaly. The majority of cases do not require any antenatal or perinatal interventions. However, selected cases need special and intensified management. This article discusses a case of a CCAM of the left pulmonary lobe covering 2/3 to 3/4 of the thoracic volume, causing mediastinal shift and hydrops. The enormous size required the planning of an EXIT (Ex Utero-Intrapartum Treatment) procedure, which was performed when the trial of intraoperative ventilation of the lungs was unsuccessful. A thoracotomy and resection of the left upper lobe were performed with the fetus on feto-placental circulation. After resection and closure of the thoracotomy, improvement of lung ventilation allowed the delivery of the child. The child and mother were discharged in a healthy condition. We conclude that the EXIT procedure is a feasible and potentially life-saving method for select cases of prenatally detected CCAM.
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125
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Netopilík M, Kratochvíl P, Schallausky F, Reichelt S, Lederer A. Hydrodynamic Parameters of Linear Aromatic Polyester of 3-Phenylglutaric Acid and Bisphenol A. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2007. [DOI: 10.1080/10236660701385912] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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126
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Lederer A, Hasenöhrl G, Gruber R, Steiner H. [Feasibility of fetal echocardiography at 11-14 weeks scan]. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2006; 27:563-7. [PMID: 17160762 DOI: 10.1055/s-2006-927028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
PURPOSE Sonographic diagnostics are increasingly brought forward into the first trimenon. Lately, more and more expert studies have been published on echocardiography in the context of the Nuchal Translucency (NT) screening (gestational age 11-14 weeks). The aim of this study has been to evaluate the feasibility of early echocardiography on the occasion of first trimenon screening in the context of routine operation. MATERIALS AND METHODS From February 2003 to March 2004, an echocardiography was prospectively sought in 130 assigned, unselected pregnant women during the first trimenon screening. Three doctors with different OGUM/DEGUM (Austrian and German societies for ultrasound in medicine) qualifications at our ward tried to represent the four-chamber view (4CV) and the outflow tracts (OFT), each via B-mode and color Doppler. The study conditions were "routine", in particular they were temporally limited. In case no sufficient visual representation was achievable with the transabdominal examination, transvaginal sonography was also used. RESULTS Via B-mode, 4CV was indicated as successful in 86/130, and OFTs in 37/130. Via color Doppler, on the other hand, it was possible to sufficiently represent 4CV in 75/130 and OFTs in 87/130. CONCLUSION In routine screening, early heart examination is a big challenge and in many cases even with good equipment no complete diagnostic echocardiography can be achieved. The utilisation of the color Doppler is helpful particularly for the representation of the outflow tracts.
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127
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Lederer A, Elrehim MA, Schallausky F, Voigt D, Voit B. Molecular weight and contraction factors of hyperbranched poly(urea-urethane)s. E-POLYMERS 2006; 6. [DOI: 10.1515/epoly.2006.6.1.510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
AbstractElution fractionations of broadly molar mass-distributed, hyperbranched poly(urea-urethane)s with OH- and Ph- end groups were carried out to obtain a number of macromolecular samples possessing different molar masses at the same chemical structure. The characterization of the polymers was performed by SEC, MALLS, 1H-NMR, MALDI-TOF-MS and viscosity measurements. Modifications of the OH-end groups of the polymers were carried out. We observed a strong influence of the end groups on the solution behaviour of the hyperbranched samples. The molecular shape of the hyperbranched polymers in solution was compared to their linear analogue using the Kuhn-Mark-Houwink- Sakurada relationship. The calculated contraction factors between 0,15 and 0,7 depending on the molar masses correspond to a very compact structure of the modified branched polymers at high molar masses.
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128
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Krause B, Voigt D, Lederer A, Auhl D, Münstedt H. Determination of low amounts of long-chain branches in polypropylene using a combination of chromatographic and rheological methods. J Chromatogr A 2004; 1056:217-22. [PMID: 15595553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The focus of our investigations lies on the detection of low amounts of long-chain branching (LCB) in isotactic polypropylene (iPP) created by electron beam irradiation. The modified samples were investigated by rheological experiments in shear and elongational flow and by size-exclusion chromatography. The comparison of the results demonstrates the efficiency and the detection limits of these methods, particularly at very low degrees of long-chain branching. The combination of chromatographic and rheological methods enables a sensitive and comprehensive way for the characterisation of the long-chain branching phenomena.
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129
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Auhl D, Stange J, Münstedt H, Krause B, Voigt D, Lederer A, Lappan U, Lunkwitz K. Long-Chain Branched Polypropylenes by Electron Beam Irradiation and Their Rheological Properties. Macromolecules 2004. [DOI: 10.1021/ma030579w] [Citation(s) in RCA: 272] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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130
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Lechleitner P, Riedl B, Raneburger W, Gamper G, Theurl A, Lederer A. Chest sonography in the diagnosis of pulmonary embolism: a comparison with MRI angiography and ventilation perfusion scintigraphy. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2002; 23:373-378. [PMID: 12514752 DOI: 10.1055/s-2002-36173] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
AIM To compare the diagnostic performance of chest sonography, MRI angiography and ventilation/perfusion intigraphy in pulmonary embolism (PE). METHOD In a prospective clinical study, 55 patients (41 women, 14 men, age 23 - 91 years) with clinical signs of PE were investigated within 48 hours of the onset of symptoms. The final diagnosis was made by MRI angiography (reference method). RESULTS PE was diagnosed in a total of 36 patients. Chest sonography revealed rounded or wedge-shaped hypoechoic lesions in 30 patients. On ventilation/perfusion (V/P) scintigraphy, 41 patients had positive V/P scans, but only 23 were of high probability. Chest ultrasound had a positive predictive value of 97 % to diagnose PE. The sensitivity, specificity, the negative predictive value and accuracy were 81 %, 84 %, 84 % and 82 %, respectively. As 18 patients had inconclusive scans, the diagnostic performance of ventilation/perfusion scintigraphy was poor. The positive predictive value, sensitivity and specificity were 58 %, 42 % and 91 %, respectively. Patients in whom PE was excluded mainly suffered from congestive heart failure, bronchopulmonary infections or pulmonary hypertension. CONCLUSION A negative sonographic study cannot rule out PE with certainty. However, a chest sonography is of acceptable diagnostic value in patients with suspected PE and may be used as an adjunct or guide to more established methods.
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131
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Lederer A, Voigt D, Clausnitzer C, Voit B. Structure characterization of hyperbranched poly(ether amide)s. I. Preparative fractionation. J Chromatogr A 2002; 976:171-9. [PMID: 12462608 DOI: 10.1016/s0021-9673(02)00937-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The focus of our investigation lies on the separation of typically broadly distributed hyperbranched poly(ether amide)s into narrow fractions of various molar masses. Their exact molar mass found via size-exclusion chromatography (SEC) with light uttering detection allows us to use these fractions for sample specific calibration in the SEC investigation of other hyperbranched samples. The analysis of the degree of branching, molar mass and viscosity behavior of the fractions gives a first indication about their molecular shape and the contribution of that shape to the overall viscosity. We determined the Mark-Houwink exponent for a hyperbranched sample using a number of narrow fractions which showed that an increase of molar mass leads to an increased molecular density.
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132
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Abstract
The work reported here experimentally investigates a striking generalization about vocabulary acquisition: Noun learning is superior to verb learning in the earliest moments of child language development. The dominant explanation of this phenomenon in the literature invokes differing conceptual requirements for items in these lexical categories: Verbs are cognitively more complex than nouns and so their acquisition must await certain mental developments in the infant. In the present work, we investigate an alternative hypothesis; namely, that it is the information requirements of verb learning, not the conceptual requirements, that crucially determine the acquisition order. Efficient verb learning requires access to structural features of the exposure language and thus cannot take place until a scaffolding of noun knowledge enables the acquisition of clause-level syntax. More generally, we experimentally investigate the hypothesis that vocabulary acquisition takes place via an incremental constraint-satisfaction procedure that bootstraps itself into successively more sophisticated linguistic representations which, in turn, enable new kinds of vocabulary learning. If the experimental subjects were young children, it would be difficult to distinguish between this information-centered hypothesis and the conceptual change hypothesis. Therefore the experimental "learners" are adults. The items to be "acquired" in the experiments were the 24 most frequent nouns and 24 most frequent verbs from a sample of maternal speech to 18-24-month-old infants. The various experiments ask about the kinds of information that will support identification of these words as they occur in mother-to-child discourse. Both the proportion correctly identified and the type of word that is identifiable changes significantly as a function of information type. We discuss these results as consistent with the incremental construction of a highly lexicalized grammar by cognitively and pragmatically sophisticated human infants, but inconsistent with a procedure in which lexical acquisition is independent of and antecedent to syntax acquisition.
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133
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Lederer A. Information systems. Buying, investing right. MODERN HEALTHCARE 1997; 27:130, 132. [PMID: 10164586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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134
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Lederer A. Take it on the CHIN. INFOCARE : INFORMATION STRATEGIES FOR HEALTHCARE NETWORKS 1996:66. [PMID: 10162582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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135
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Lederer A. Climbing out of the basement: IT (information technology) organizational requirements. INFOCARE : INFORMATION STRATEGIES FOR HEALTHCARE NETWORKS 1995:48. [PMID: 10142489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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136
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Lederer A. Anticipating & supporting the evolution of an IDS. INFOCARE : INFORMATION STRATEGIES FOR HEALTHCARE NETWORKS 1994:48. [PMID: 10140751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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137
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Hauser H, Beham A, Uranüs S, Frühwirth H, Lederer A, Klimpfinger M. Malignant fibrous histiocytoma of the mesentery--a rare cause of abdominal pain. Case report with a review of literature. ZEITSCHRIFT FUR GASTROENTEROLOGIE 1993; 31:735-8. [PMID: 8310727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Malignant fibrous histiocytoma (MFH) is a tumor most frequently occurring in lower and upper extremities and in retroperitoneum. This paper presents the extremely rare case of a 55-year-old male patient with a MFH of storiform pleomorphic subtype originating from the mesentery. Sonography, computed tomography as well as endoscopy and ERCP did not reveal the diagnosis. Finally the tumor was diagnosed by laparoscopy with biopsy and histological examination. Two months after diagnosis of the tumor the patient died of bronchopneumony and heart failure contracted during a generalisation of MFH.
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138
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Wildling R, Schnedl WJ, Reisinger EC, Schreiber F, Lipp RW, Lederer A, Krejs GJ. Agenesis of the dorsal pancreas in a woman with diabetes mellitus and in both of her sons. Gastroenterology 1993; 104:1182-6. [PMID: 8462806 DOI: 10.1016/0016-5085(93)90290-s] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Complete agenesis of the dorsal pancreas has rarely been described. Complete agenesis of the dorsal pancreas in a female who developed insulin-dependent diabetes mellitus at the age of 39 years is reported. The diagnosis of agenesis of the dorsal pancreas was suspected by abdominal ultrasound and confirmed by abdominal computed tomography (CT), magnetic resonance imaging, and endoscopic retrograde pancreatography. Her exocrine pancreatic function was essentially normal. Both of the patient's sons also had agenesis of the body and tail of the pancreas verified by abdominal CT but had no evidence of diabetes mellitus. This familial occurrence of agenesis of the dorsal pancreas suggests that hereditary mechanisms may play a role in the pathogenesis of this anomaly.
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139
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Flueckiger F, Lammer J, Klein GE, Hausegger K, Lederer A, Szolar D, Tamussino K. Malignant ureteral obstruction: preliminary results of treatment with metallic self-expandable stents. Radiology 1993; 186:169-73. [PMID: 8416559 DOI: 10.1148/radiology.186.1.8416559] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Self-expandable metal stents 7 mm in diameter were percutaneously implanted into 13 ureters in 10 patients with malignant ureteral obstruction not amenable to double-J stent placement. In nine ureters, one stent was placed, and in four ureters, two overlapping stents were placed. Primary reconstitution of ureteral patency was achieved in all ureters. After 1-2 weeks, four ureters showed a urothelial reaction encroaching on the lumen of the ureter, and a double-J stent was placed coaxially. One ureter was occluded by urothelial hyperplasia 4 weeks after stent placement, and a double-J stent was therefore placed. One ureter was occluded 8 months after stent placement by distal tumor overgrowth. The other ureters showed no signs of obstruction during a follow-up of 3-14 (average, 5.8) months. Peristalsis was preserved at both ends of the stent in all ureters. The use of this stent alone or in combination with a double-J stent alleviated upper urinary tract obstruction and avoided external drainage in all patients.
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140
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Lederer A, Kullnig P, Pongratz M. [Extrinsic allergic alveolitis in CT and HR-CT]. ROFO-FORTSCHR RONTG 1992; 157:257-61. [PMID: 1391821 DOI: 10.1055/s-2008-1033009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The CT changes on conventional and high-resolution CT in 14 patients with exogenous allergic alveolitis (EAA) were analysed retrospectively. There were 8 patients with clinically subacute disease, 5 patients in a chronic stage and 1 patient with acute EAA. The appearances and their distribution were examined. Seven of the 8 patients in the subacute stage showed a ground glass pattern and multiple nodules of less than 2 mm. All patients in the chronic stage showed a combination of fine infiltrates, small nodules and irregular linear densities; distortion of the pulmonary pattern was present in 3 cases. The patient with acute EAA showed diffuse dense areas of consolidation in both lungs as well as multiple nodules and a ground glass pattern. The CT appearances of EAA correspond with the basic micropathology and, within the clinical context, permit diagnostic classification.
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141
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Lederer A, Kullnig P, Pongratz M. [Pulmonary alveolar proteinosis in CT and HR-CT]. ROFO-FORTSCHR RONTG 1992; 156:98-9. [PMID: 1733483 DOI: 10.1055/s-2008-1032844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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142
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Lederer A. Modification suggested for nursing intervention. Oncol Nurs Forum 1991; 18:659. [PMID: 2067957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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143
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Lederer A, Flückiger F, Wildling R, Fruhwirth J. [A solitary metastasis in the trapezium bone]. Radiologe 1990; 30:79-80. [PMID: 2320730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Carpal bone is an uncommon location for metastases, and diagnostic problems can occur when a solitary metastasis mimics acute arthritis or osteomyelitis clinically as well as radiologically.
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144
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Lederer A. Confusion: recognition and remedy. Notes on a nursing home. Geriatr Nurs 1983; 4:224-7. [PMID: 6553005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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145
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Lederer A. URGENT NEED FOR THE STANDARDIZATION OF LABORATORY WORK. Am J Public Health (N Y) 1920; 10:876-9. [PMID: 18010395 DOI: 10.2105/ajph.10.11.876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
As a practical man familiar with the technique of the laboratory this author urges the need of establishing standards in laboratory practice. "This task will have to be faced in the near future," he writes, "And I believe that the A. P. H. A. is the proper organization to assume this important duty."
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146
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Lederer A. NOTES ON THE PRACTICAL APPLICATION OF THE "SALTPETER METHOD" FOR DETERMINING THE STRENGTH OF SEWAGES. Am J Public Health (N Y) 1915; 5:354-61. [PMID: 18009223 DOI: 10.2105/ajph.5.4.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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147
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Lederer A. A New Method for Determining the Relative Stability of a Sewage, Effluent, or Polluted River Water. J Infect Dis 1914. [DOI: 10.1093/infdis/14.3.482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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148
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Lederer A. The Relation of the Nitrates to the Putrescibility of Sewages. J Infect Dis 1913. [DOI: 10.1093/infdis/13.2.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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149
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Lederer A. Laboratory Section: THE INFLUENCE OF STORAGE AND VARIOUS PRESERVATIVES UPON THE DISSOLVED OXYGEN IN WATERS. J Am Public Health Assoc 1911; 1:740-6. [PMID: 19599668 DOI: 10.2105/ajph.1.10.740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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150
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Lederer A, Hommon HB. Laboratory Section: THE PRESERVATION OF SEWAGE BY THE AID OF CHLOROFORM AND COLD STORAGE. J Am Public Health Assoc 1911; 1:267-72. [PMID: 19599593 DOI: 10.2105/ajph.1.4.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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