Summary
In this case of an extraskeletal osteosarcoma initially there were typical difficulties in diagnosing a) a malignant mesenchymal tumor and b) a bone-producing tumor. Only focally the text-booking findings of an osteosarcoma were present. The differential diagnosis concerned mainly pseudosarcomatous lesions with bone formations, which histologically may appear suspicious, however, follow a benign course clinically.
Zusammenfassung
Im vorliegenden Falle eines extraskeletalen Osteosarkoms traten Schwierigkeiten auf bei der Diagnosestellung a) eines malignen mesenchymalen Tumors und b) eines knochenbildenden Tumors. Nur fokal waren die lehrbuchmäßigen Kriterien eines Osteosarkoms nachweisbar. Differentialdiagnostisch sind vor allem pseudosarkomatöse knochenbildende Tumoren abzugrenzen, die histologisch malignitätsverdächtig erscheinen können, jedoch einen gutartigen klinischen Verlauf aufweisen.
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Meister, P., Konrad, E.A. & Stolz, S. Extraskeletal osteosarcoma. Arch. Orth. Traum. Surg. 98, 311–314 (1981). https://doi.org/10.1007/BF00378888
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DOI: https://doi.org/10.1007/BF00378888