Loss of pulp sensitivity and pain as the first symptoms of a Ewing's sarcoma in the right maxillary sinus and alveolar process: report of a case

This case report describes the diagnosis and treatment of a Ewing's sarcoma in the right maxillary sinus and alveolar bone of a 19-year-old female patient. The first clinical symptoms were a loss of sensitivity of the premolars and first molar in the right maxilla and acute pain located in the area of these teeth. Initially, the referring dentist had treated these findings as an acute apical periodontitis with root canal medication. Because swellings on the palatal and buccal aspects of the teeth occurred and could not be treated with incision and drainage, the dentist referred the patient. Cone-beam computed tomography revealed a proliferation of soft tissue in the right maxillary sinus, with a radiopaque material at the tip of the mesiobuccal root of the first molar and resorptive signs of the mesiobuccal and distobuccal roots of the first molar. The palatal cortical bone of the right alveolar process seemed to be intact. After explorative surgery with biopsies from the buccal, palatal, and sinus proliferation areas, the pathologist diagnosed the lesion as a Ewing's sarcoma. Treatment of the patient consisted of initial chemotherapy, hemimaxillectomy, and postsurgical chemoradiotherapy.

High expression of neuropeptide Y1 receptors in ewing sarcoma tumors

PURPOSE: Peptide receptors are frequently overexpressed in human tumors, allowing receptor-targeted scintigraphic imaging and therapy with radiolabeled peptide analogues. Neuropeptide Y (NPY) receptors are new candidates for these applications, based on their high expression in specific cancers. Because NPY receptors are expressed in selected sarcoma cell lines and because novel treatment options are needed for sarcomas, this study assessed the NPY receptor in primary human sarcomas. EXPERIMENTAL DESIGN: Tumor tissues of 88 cases, including Ewing sarcoma family of tumors (ESFT), synovial sarcomas, osteosarcomas, chondrosarcomas, liposarcomas, angiosarcomas, rhabdomyosarcomas, leiomyosarcomas, and desmoid tumors, were investigated for NPY receptor protein with in vitro receptor autoradiography using (125)I-labeled NPY receptor ligands and for NPY receptor mRNA expression with in situ hybridization. RESULTS: ESFT expressed the NPY receptor subtype Y1 on tumor cells in remarkably high incidence (84%) and density (mean, 5,314 dpm/mg tissue). Likewise, synovial sarcomas expressed Y1 on tumor cells in high density (mean, 7,497 dpm/mg; incidence, 40%). The remaining tumors expressed NPY receptor subtypes Y1 or Y2 at lower levels. Moreover, many of the sarcomas showed Y1 expression on intratumoral blood vessels. In situ hybridization for Y1 mRNA confirmed the autoradiography results. CONCLUSIONS: NPY receptors are novel molecular markers for human sarcomas. Y1 may inhibit growth of specific sarcomas, as previously shown in an in vivo mouse model of human ESFT. The high Y1 expression on tumor cells of ESFT and synovial sarcomas and on blood vessels in many other sarcomas represents an attractive basis for an in vivo tumor targeting.

Das Schulhaus als geheimer Miterzieher. Normative Debatten in der Schweiz von 1830 bis 1930

Der Schulhausbau ist im 19. Jahrhundert einem starken Wandel unterworfen. In diesem Buch wird erstmals der Frage nachgegangen, wie und weshalb Normen für den Schulhausbau in der Schweiz von 1830 bis 1930 generiert und in formale Regelungen umgesetzt werden. Die Annahme, Erneuerungen im Schulhausbau betreffend Hygiene, Ergonomie, Ästhetik und Pädagogik hätten erst seit der Wende zum 20. Jahrhundert, insbesondere unter dem Einfluss der Reformpädagogik, stattgefunden, lässt das 19. Jahrhundert in Sachen Schulhausbau als rückständig erscheinen. Dabei wird vergessen, dass in dieser Zeit, gerade was die Zahl der gebauten Schulhäuser und die Entwicklung von Normen betrifft, eine intensive Arbeit geleistet wurde, die unter den historischen Umständen innovativ war. Die Organisation des Unterrichts, Licht und Luft im Schulzimmer und die Gesundheit der Schulkinder haben bereits das frühe 19. Jahrhundert normativ, praktisch und technisch beschäftigt. Gegen Ende des 19. Jahrhunderts findet eine über institutionelle und kantonale Grenzen hinausgehende öffentliche Diskussion statt, die breit rezipiert und professionalisiert wird. Verschiedene professionelle Akteure knüpfen an vorangegangene normative Debatten, staatliche Regulative, bestehende Traditionen und historische Kontexte an, um unterschiedlich motivierte, von Professionalisierungsprozessen beeinflusste Ansprüche an den Schulhausbau zu legitimieren, bis das Schulhaus zum „geheimen Miterzieher“ stilisiert wird.

Minority Rights and Humanitarianism: The international campaign for the Ukrainians in Poland, 1930-31

In October 1930, violent action of the Polish security forces against the Ukrainian population in Eastern Galicia resulted in an international campaign for the Ukrainians in Poland. Its central claim was the condemnation of these incidents as a violation of the Minorities Treaty of the League of Nations. The article focuses on the involved British extra-parliamentary groups and their international federations as well as leftist intellectuals, socialist parties and the Labour and Socialist International. In most cases, the commitment of the activists was motivated by the desire to expose a humanitarian scandal while the implementation of minority rights played a minor role. When it turned out that the first reports had presented an exaggerated version of the events, they shifted their focus to the Polish opposition whose persecution started in November 1930.