Zusammenfassung
Weichteilschwellungen sind das Symptom einer Vielzahl neoplastischer und nichtneoplastischer Veränderungen. Sarkome gehören zu den selteneren Ursachen. Die Feinnadelpunktion (FNP) hat sich in der Abgrenzung zu entzündlichen Prozessen sowie in der Abklärung von Tumorrezidiven und Karzinommetastasen als minimal-invasive, kostengünstige und zuverlässige Methode bewährt. Auch in der Abklärung von Weichteiltumoren kann sie zu einer präzisen Diagnose führen. Voraussetzung ist eine enge multidisziplinäre Zusammenarbeit unter Einbeziehung klinischer, radiologischer und morphologischer Befunde. Für die zytologische Befundung sind Alter und Geschlecht sowie Topographie, Größe und Wachstumsgeschwindigkeit des Tumors wichtige Parameter. Reifungsgrad und Form der Zellen sowie Vorhandensein und Ausdifferenzierung der bindegewebigen Matrix bieten erste differenzialdiagnostische Hinweise und sind der Ausgangspunkt für immunzytochemische und molekularbiologische (FISH, RT-PCR) Zusatzuntersuchungen. Diese Untersuchungen werden an Direktausstrichen, an mittels Zellblockmethode eingebettetem und an tiefgefrorenem Punktionsmaterial ausgeführt.
Abstract
Soft tissue swelling represents a common clinical sign of a variety of neoplastic and non-neoplastic lesions. Sarcoma is rarely a cause. Fine needle biopsy as a minimally invasive, economic and accurate method is well suited for the diagnosis of inflammatory/infectious processes as well as of recurrent and metastatic disease. Cytologic diagnosis of primary soft tissue tumors is also feasible. It requires close collaboration with other medical disciplines and incorporation of clinical, radiological and morphologic findings. Clinical data such as age, gender, size and topography are important parameters. The differentiation of cells and properties of the extracellular matrix supplies clues for the differential diagnosis and forms the starting point for immunohistochemical or molecular analysis (FISH, RT-PCR). This analysis may be performed on cytological smears, paraffin embedded material of the cell blocks or on frozen material.
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Danksagung
Die molekulargenetischen Analysen werden dankenswerterweise im Labor von Prof. D. Zimmerman, Institut für Pathologie, Universitätsspital Zürich durchgeführt.
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Bode-Lesniewska, B. Zytologische Sarkomdiagnostik. Pathologe 32, 14–23 (2011). https://doi.org/10.1007/s00292-010-1396-9
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DOI: https://doi.org/10.1007/s00292-010-1396-9