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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 45 (1994), S. 222-224 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter: Argonlasertherapie – Chondrodermatitis helicis – Schmerzfreiheit ; Key words: Argon laser therapy – Chondrodermatitis helicis – Painless healing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract. In 5 years 9 patients with a total of 16 painful ear nodules (chondrodermatitis helicis) have been treated as follows. A small excision is carried out with local anaesthesia for histological examination. The rest of the nodule or any other nodules are carbonized by means of the argon laser, also with local anaesthesia, including the surface of the cartilage under the nodules. There have been no cases of postoperative inflammation or infection. New nodules occurring several months after treatment have been successfully treated in the same way. There have been no real recurrences. The cosmetic result is very good in all cases. The patients are free of pain immediately after the laser therapy. Laser therapy for painful nodules of the ear has good and lasting results, with a lower rate of recurrences than any other form of treatment.
    Notes: Zusammenfassung. In 5 Jahren wurden 8 Patienten mit insgesamt 16 schmerzhaften Ohrknötchen wie folgt behandelt: Die klinische Diagnose wurde in Lokalanästhesie gesichert. Der restliche Herd wurde mit dem Argonlaser (in Lokalanästhesie) karbonisiert, einschließlich der Knorpeloberfläche an der Knotenbasis. Es kam in keinem Fall zu postoperativen Entzündungen oder Infektionen. In 3 Fällen traten nach Monaten anders lokalisierte neue kleine Knoten auf, die sich nach der gleichen Behandlung vollständig und dauerhaft zurückbildeten. Das kosmetische Ergebnis war in allen Fällen sehr gut. Direkt nach dem Eingriff war der Patient dauerhaft schmerzfrei. Die Ergebnisse zeigen, daß diese Therapie zu guten und dauerhaften Behandlungserfolgen mit geringster Rezidivrate führt.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 45 (1994), S. 532-535 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter: Mikrofilmdokumentation – Nävuszellnävi – Verlaufskontrolle ; Key words: Microfilm photography – Naevi – Follow-up
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract. Microfilm photography allows documentation of naevi in a map-like fashion. The localization of multiple naevi is no longer a problem, as one can scan the film. Comparison of the magnified film with the patient can be done in day-light. Magnification up to 48 times is possible. Detection of early changes of the naevi, during the horizontal growth phase, should increase the 5-year survival rate.
    Notes: Zusammenfassung. Die Mikrofilmdokumentation ermöglicht eine kartenähnliche Dokumentation von melanozytären Hautveränderungen. Das Problem der Lokalisation entfällt, da das Bild abgefahren werden kann, die Übersichtsaufnahmen können 24- bis 48fach vergrößert werden. Der Vergleich des vergrößerten Dias und des Patienten ist bei Tageslicht möglich. Die Erfassung von Veränderungen in der horizontalen Wachstumsphase sollte die Fünfjahresüberlebensrate verbessern.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 21 (1994), S. 0 
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The histogenesis of cutaneous local mucinosis (CFM) is controversial. Eleven cases of CFM (5F, 6M; mean age 51 years) from our routine files between 1986 and the present time have, therefore, been examined histopathologically and immunohistochemically. Histology revealed an increased number of fibroblast-like cells in early lesions, whereas they were diminished or predominantly at the margin in advanced ones. The myxomatous areas showed slight to absent reticulum formation. Similarly, elastic fibers were almost absent, and collagen fibers were fragmented and replaced by variable amounts of mucin. One specimen revealed an epithelial component within the lesion reminiscent of a poorly induced trichofolliculoma. Immunohistochemically, vimentin was consistently present and correlated with the number of fibroblast-like cells. A few (〈5%) CD34+ dermal dendritic cells (DDs) were locally seen within CFM. In contrast, FXIIIa+ DDs accounted for up to 30%. Fibroblasl-like cells were negative for S-100 protein, Leu7, desmin and α-SMA. The epithelial component within one of our specimens seems to have been induced by CFM and is a feature also seen in (angio)-myxomas. CFM appears to be a mesenchymally derived lesion composed predominantly of fibroblasts. DDs do not form the major cell component but rather seem passively incorporated.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 19 (1992), S. 0 
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: One hundred and two cases of benign sweat gland tumors of the skin were studied for the presence of myoepithelial cells specifically identified by a monoclonal antibody to alpha-smooth muscle actin on paraffin-embedded tissues. The monoclonal antibody gave a positive result in 12 of 12 cases of cylindroma, 14 of 16 cases of spiradenoma, 2 of 2 cases of apocrine tubular adenoma (papillary eccrine adenoma), 5 of 5 cases of apocrine hidrocystoma, 5 of 5 cases of hidradenoma papilliferurm, and in 10 of 10 cases of syringocystadenoma papilliferum. Rare myoepithelial cells were detected in only 1 of 10 cases of mixed tumor, apocrine type. There was no immunoreactivity for alpha-smooth muscle actin in eccrine hidrocystoma (2 cases), mixed tumor of eccrine type (2 cases), syringoma (7 cases), hidroacanthoma simplex (1 case), eccrine poroma (14 cases), clear cell hidradenoma (15 cases), and in 1 case of eccrine syringofibroadenoma. Our data support the concept that myoepithelial cells are seen in most sweat gland tumors considered to differentiate toward the secretory coil of the normal sweat gland. In contrast, myoepithelial cells are absent in tumors showing differentiation toward the excretory (ductal) component of the gland.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 369 (1976), S. 215-227 
    ISSN: 1432-2307
    Keywords: Kaposi's sarcoma ; Endothelial cells ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 1. Das wesentliche histologische Substrat des M.K. ist charakterisiert durch eine Proliferation von Zügen spindelförmiger Zellen, durch zellig begrenzte Gefäßspalten und durch eine geringfügige zellulär-entzündliche Begleitreaktion. 2. Die Zellen, welche die Gefäßspalten begrenzen, vehalten sich wie Capillarendothelzellen. Sie zeigen eine starke alkalische Phosphatase-Reaktivität und eine deutliche Leucinaminopeptidase-Aktivität; sie enthalten typische Weibel-Palade Granula. 3. Die ultrastrukturelle Analyse der Tumorzellen läßt ferner gefäßsprossenartige Formationen mit und ohne Lumen erkennen, an deren Ausbildung in der Hauptsache wenig ausdifferenzierte Endothelzellen beteiligt sind. Daneben erscheinen fibroblastoide Tumorzellen die sich möglicherweise von den Perithelzellen herleiten lassen. 4. Typisch für M.K. sind Extravasation und Phagocytose von Erythrocyten mit intracytoplasmatischem Abbau und Einlagerung myelinartiger, an Schwannzellen erinnernde Figuren. 5. Folgerung: Der M.K. ist gekennzeichnet durch eine multifokale Neubildung kapillarartiger Strukturen mit einer progressiven sarkomatösen Entwicklung.
    Notes: Summary 1. Histologically, Morbus Kaposi is primarily characterized by a proliferation of streams composed of spindle-shaped cells, by vascular slits lined by cells, and by a minor cellular inflammatory reaction. 2. The cells lining the vascular slits resemble endothelial cells and exhibit strong alkaline phosphatase activity and a clear leucinaminopeptidase activity. They contain Weibel-Palade bodies. 3. The ultrastructural analysis of the tumor cells shows a proliferative formation resembling capillary sprouts with and without lumina. The lumina are composed primarily of poorly differentiated endothelial cells. A second typical cellular component are fibroblast-like tumor cells possibly derived from perithelial cells. 4. Indicative of M.K. are also extravasation and phagocytosis of erythrocytes with intracytoplasmic decomposition, and storage of myelinlike structures somewhat resembling Schwannian-cells. 5. Conclusion: M.K. is characterized by a multifocal neoplasia of capillary like structures and by a progressive sarcomatous development.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Epitheloidzelliges Histiozytom ; Immunhistologie ; Key words Epithelioid cell histiocytoma ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary We report on seven examples of this rare, only recently described benign tumor, which presented clinically as solitary elevated nodules on the lower (n=5) and upper (n=2) extremity, measuring between 0.6 and 1.1 cm in diameter. Histologically, all tumors were well-defined with a characteristic epidermal collarette. There were abundant (60–80%) epithelioid cells with prominent cytoplasm, a vesicular nucleus and inconspicuous nucleolus, as well as a number of dilated blood vessels. Immunohistologically, tumor cells did not react with monocyte/macrophage antibodies (KP1, MAC387). In addition, there was no evidence of myofibroblastic differentiation (alpha-smooth muscle actin and desmin negative). Thus, while immunohistological markers are helpful to exclude the diagnosis of other tumors, they do not shed light on the differentiation of epithelioid cell histiocytomas. The present cases are identical to those described originally. Recently similar lesions have been described in deeper parts of the corium as well as more cellular forms. Epithelioid cell histiocytoma represents a characteristic, poorly known variant within the spectrum of benign fibrous histiocytomas; it needs to be distinguished clinically and histopathologically especially from Spitz nevus.
    Notes: Zusammenfassung Wir berichten über sieben Beobachtungen dieses seltenen, erst kürzlich beschriebenen, gutartigen Tumors, der klinisch in allen Fällen als solitärer leicht erhabener Knoten von 0,6 bis 1,1 cm Durchmesser an der unteren (n=5) und oberen (n=2) Extremität imponierte. Histologisch zeigte sich in allen Fällen eine gut umschriebene Läsion mit charakteristischer epidermaler Manschette. Überwiegend (60–80%) epitheloide Zellen mit reichlich Zytoplasma, vesikulärem Kern und kleinem Nukleolus sowie zahlreiche erweiterte Blutgefäße kamen zur Darstellung. Diese Zellen reagierten nicht mit Monozyten/Makrophagen Antikörpern (KP1, MAC387). Auch fanden sich keine Hinweise für eine myofibroblastische Differenzierung (Alpha-smooth muscle actin und Desmin negativ). Mit Hilfe immunhistologischer Marker können daher andere Tumoren differentialdiagnostisch abgegrenzt werden, jedoch geben sie keine Information über die Differenzierung epitheloidzelliger Histiozytome. – Unsere hier präsentierten Fälle entsprechen der primär beschriebenen Variante. Kürzlich wurde auch über ähnliche Läsionen im tieferen Korium sowie zellreichere Formen berichtet. So stellt das epitheloidzellige Histiozytom eine charakteristische, bisher wenig bekannte Variante im Spektrum gutartiger fibröser Histiozytome dar, die klinisch und histopathologisch insbesondere vom Nävus Spitz abzugrenzen ist.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 274 (1982), S. 141-154 
    ISSN: 1432-069X
    Keywords: Immunoblastic lymphoma ; T-cell lymphoma ; Mycosis fungoides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The case of a 69-year-old male patient with an unusual type of malignant lymphoma is presented. Clinically, it was at first characterized by follicular papules and erythematous patches, later, by the development of cutaneous tumors and enlarged lymph nodes, and by a severe, finally excruciating pruritus. Treatment with PUVA (psoralen-ultraviolet-A) combined with 40–80 mg prednisolone and then with chemotherapy [COPP regimen (cyclophosphamide, vincristine, procarbacine, prednisone), high-dosage methotrexate followed by citrovorum factor rescue] was not successful. The patient died of pneumonia 2.5 years after the onset of the first clinical symptoms. An immunoblastic infiltrate was observed histologically and electromicroscopically in the initial lesions of the skin. Therefore, the diagnosis of a cutaneous immunoblastic T-cell lymphoma was tentatively made at the beginning, which was later confirmed in numerous biopsies and laboratory investigations. Immunocytologically and enzymecytochemically, the infiltrating cells were shown to be immature T cells; in the lymph nodes, numerous immunoblasts and large Sézary cells were noted beginning in the paracortical areas and leading to the destruction of the normal lymph node structure. A maximum of 18% Sézary cells was observed in the peripheral blood, though there were no very large Sézary cells or blast cells. In the autopsy, a systemic involvement with an atypical lymphoid infiltration was found in numerous internal organs. The special nature of this case justifies its classification as high-grade malignant lymphoma and its differentiation from normal cases of mycosis fungoides. In contrast, mycosis fungoides generally fulfils criteria typical of low-grade malignant lymphomas.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-069X
    Keywords: Immunoelectronmicroscopy ; Psoriasis vulgaris ; Complement C3 ; Peroxidase ; Antiperoxidase multistep technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 4 Patienten mit Psoriasis vulgaris wurde in vivo gebundenes Komplement (C3) innerhalb des Str. corneum von Psoriasisherden durch Anwendung der Peroxidase—Antiperoxidase Mehrstufentechnik geortet. Reaktionsprodukte fanden sich sowohl intercellulär als auch den Zellmembranen der parakeratotischen Zellen der Hornschicht angelagert. Diese Befunde werden hinsichtlich ihrer pathogenetischen Bedeutung diskutiert.
    Notes: Summary The presence of in vivo bound complement (C3) within the stratum corneum of 4 psoriatic cases is demonstrated ultrastructurally by the use of the peroxidase—antiperoxidase multistep technique. The positive reaction product was located in the intercellular space and on the surface of the parakeratotic cells within the horny layer. The membranes of the horny cells were not altered and peroxidase granules could also not be detected within their cytoplasm. The explanation of this finding as well as its pathogenetic significance is discussed.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 266 (1979), S. 239-251 
    ISSN: 1432-069X
    Keywords: Cutaneous malignant B-cell lymphoma ; Ultrastructure ; Semithin sections ; Cutane maligne B-Zell Lymphome ; Ultrastruktur ; Semidünnschnitte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Achtzehn Fälle von cutanen B-Zell Lymphomen von niedrigem Malignitätsgrad (gesichert durch Enzymcytochemie und Immuncytologie) wurden morphologisch mittels Semidünn- und Dünnschnitten unter-sucht. Vier Typen mit einem charakteristischen Muster von verschiedenen lymphoiden Zellen wurden gefunden: (1) Der lymphocytische Typ, überwiegend aus kleinen Lymphocyten bestehend; (2) der lymphocytoide (zentrocytische oder prolymphocytische) Typ, bei dem neben kleinen auch mittelgroße Lymphocyten (mit und ohne geknitterten Zellkernen) erscheinen; (3) der lymphoplasmacytoide Typ, bei dem neben kleinen und mittelgroßen Lymphocyten lymphoide Zellen mit unterschiedlich ausgeprägten Differenzierungsmerkmalen von Plasmazellen zu finden sind; sowie (4) der zentroblastische-zentrocytische Typ. Hier sind neben kleinen und mittelgroßen Lymphocyten auch Zentroblasten zu beobachten. Insgesamt stimmen die hier erhobenen morphologischen Befunde gut mit entsprechenden nodalen malignen Lymphomen überein. Die Anwendung moderner Klassifikationen von non-Hodgkin Lymphomen, insbesondere die »Kiel-Klassifikation«, erscheint daher auch für die Hautlymphome gerechtfertigt. Dünn- und Semidünnschnitte eignen sich bei der Routinediagnostik von derartigen Krankheitsfällen, vor allem dann, wenn mit Paraffinschnitten keine klare diagnostische Einordnung erfolgen konnte.
    Notes: Summary Eighteen cases of low grade malignant B-cell lymphomas (confirmed through enzyme cytochemistry and immunocytology) were investigated morphologically using thin and semithin sections. Four types with a characteristic pattern of different lymphoid cells were found: (1) the lymphocytic type, predominantly consisting of small lymphocytes; (2) the lymphocytoid (centrocytic or prolymphocytic) type, in which in addition to small lymphocytes medium-sized lymphocytes (with or without cleaved nuclei) are found; (3) the lymphoplasmacytoid type, where lymphoid cells with different degrees of similarity to plasma cells are seen as well as small and medium-sized lymphocytes; and (4) the centroblastic-centrocytic type, in which centroblasts are present next to small and medium-sized lymphocytes. These findings correlate well with the morphological observations in low-grade malignant B-cell lymphomas of the lymph nodes. Therefore, the application of modern classifications of non-Hodgkin lymphomas, such as the “Kiel Classification”, to cutaneous lymphomas appears justified. Thin and semithin sections are particularly useful in suspected cases of cutaneous malignant lymphoma, in which paraffin sections did not allow the diagnosis to be established.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 258 (1977), S. 9-16 
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das celluläre Infiltrat in der Dermis von Läsionen mit initialer Psoriasis wurde qualitativ cytochemisch zur Differenzierung der Entzündungszellen untersucht. Die größte Dichte des dermalen Infiltrates fand sich immer im Zentrum von frühen Läsionen. Es wurde nachgewiesen, daß die meisten Entzündungszellen innerhalb der perivasculären Räume im oberen Corium Makrophagen, Monocyten und Lymphocyten darstellen. Die Zahl der Mastzellen war nicht erhöht, eosinophile Granulocyten und Plasmazellen konnten nicht nachgewiesen werden. Nur selten fanden sich vereinzelte polymorphkernige Leukocyten in fortgeschrittenem Stadium. Diese Befunde werden von funktionellen und immunologischen Gesichtspunkten diskutiert.
    Notes: Summary The cellular infiltrate in the dermis of incipient psoriatic lesions was qualitatively and quantitatively evaluated using cytochemical methods for the differentiation of inflammatory cells. The greatest intensity of the dermal infiltrate was always in the center of early lesions. It was shown that most of the inflammatory cells within the perivascular areas of the upper dermis were macrophages, monocytes and lymphocytes. The number of mast cells was not increased; eosinophils and plasma cells could not be detected. Only seldom could a single or a few polymorphonuclear leucocytes be seen in lesions at a more advanced stage. These findings are discussed in the light of known immunological and functional mechanisms.
    Type of Medium: Electronic Resource
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