Zusammenfassung
Wir berichten über den Fall eines 84-jährigen Patienten mit einer schmerzlosen, über
zehn Jahre langsam wachsenden Raumforderung in der ersten Interdigitalfalte. In der
Magnetresonanztomografie zeigte sich eine glatt begrenzte Raumforderung des Daumenballens
mit einem zentralen solideren Anteil. Dieser speicherte vermehrt Kontrastmittel. Die
lokale Exstirpation zeigte histologisch ein Lipom mit zentral gelegenem Liposarkom.
Wir diskutieren den seltenen Fall der malignen Entartung eines Lipoms. Es ergibt sich
bei größeren, über viele Jahre bestehenden Lipomen die Konsequenz kernspintomografischer
Kontrollen.
Summary
We report the case of an 84-year-old patient presenting with a painless tumor between
the thumb and the index finger. MRI showed a clearly defined tumor of the thenar eminence
with a centrally localized more solid structure. There was a signal enhancement after
intravenous administration of contrast medium. We performed a local resection of the
tumor. Histologically, we found a lipoma with a centrally localized liposarcoma. We
discuss the rare case of malignant transformation of a lipoma. In long-standing large
lipomas we suggest regular controls by MR imaging.
Schlüsselwörter
Tumoren: Liposarkom - Lipom - MRT
Key words
Tumors: liposarcoma - lipoma - MRI
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Dr. med. Wolfgang Baer
Klinik für Handchirurgie und Plastische Chirurgie
Kliniken Dr. Erler
Kontumazgarten 4 - 18
90429 Nürnberg
Email: baer.wolfgang@t-online.de
