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The submicroscopic structure of a chondroblastic osteogenic sarcoma

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Summary

Two patients are reported with a chondroid form of osteosarcoma, whose structure was also analyzed submicroscopically. The clinical and radiologic picture and the rapid lethal progress of the disease indicated an osteosarcoma, while both histologic and electron-microscopic investigation suggested the prevalence of malignant chondroid. Progress in the treatment of osteosarcoma makes it essential for diagnostic, therapeutic and prognostic reasons to reintroduce subclassification of these tumors in an attempt to correlate their morphological picture with their biologic properties. According to our experience to date, it seems that the cartilaginous component in no way ameliorates the rapid malignant penetration of the osteosarcoma. It is essential to distinguish these tumors from the usually much less malignant chondrosarcomas and to place the chondroblastic osteogenic sarcoma among in spite of the clear predominance of the malignant chondroid, and thus also introduce highly radical and combined therapy.

Zusammenfassung

Es wurden zwei Fälle vom typischen chondroiden Osteosarkom, deren Struktur auch submikroskopisch analysiert wurde, beschrieben. Das klinische und radiologische Bild, sowie der schnelle letale Verlauf der Erkrankung unterstützten die Diagnose eines Osteosarkoms. Dagegen zeigten die histologische und elektronenmikroskopische Untersuchung einen überwiegenden Anteil vom malignen Chondroid. Der Fortschritt in den Behandlungsmethoden des Osteosarkoms zeigt aus diagnostischen, therapeutischen und prognostischen Gründen die Wiedereinführung der Subklassifikation der Osteosarkome, sowie die Korrelation ihres morphologischen Bildes mit ihren biologischen Eigenschaften, als unentbehrlich. Nach den derzeitigen Erfahrungen vermindert die chondroblastische Komponente in keinem Fall die schnelle maligne Penetranz eines Osteosarkoms. Es ist grundsätzlich wichtig, diese Tumoren von den meist weniger malignen Chondrosarkomen zu unterscheiden, auch wenn das maligne Chondroid in diesen Osteosarkomen überwiegt. Danach muß auch die Therapie entsprechend radikal und kombiniert durchgeführt werden.

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Horn, V., Spohrová, D., Bozděch, Z. et al. The submicroscopic structure of a chondroblastic osteogenic sarcoma. Arch. Orth. Traum. Surg. 103, 100–106 (1984). https://doi.org/10.1007/BF00389580

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