rings and arcs calcification

Typische

ring- und bogenförmige Verkalkungen im proximalen Schaft eine 83-jährigen sehr gut passend zu einem Enchondrom. Es fand sich ein ähnlicher Befund im proximalen Humerus.

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Typisches

Enchondrom im proximalen Humerus als Zufallsbefund im Thoraxröntgenbild (Ausschnitt).

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Rings and

arcs calcification • Chondrosarcoma - sacrum - Ganzer Fall bei Radiopaedia

Gaillard, F. Chondrosarcoma - sacrum. Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-6173 • CC by-nc-sa 3.0 (modified)

Rings and

arcs calcification • Secondary chondrosarcoma - Ganzer Fall bei Radiopaedia

Gaillard, F. Secondary chondrosarcoma. Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-6175 • CC by-nc-sa 3.0 (modified)

Rings and

arcs calcification • Enchondroma - Ganzer Fall bei Radiopaedia

Niknejad, M. Enchondroma. Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-61318 • CC by-nc-sa 3.0 (modified)

Rings and

arcs calcification • Rings and arcs calcification - chondrosarcoma - Ganzer Fall bei Radiopaedia

Niknejad, M. Rings and arcs calcification - chondrosarcoma. Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-21782 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

Rings and arcs calcification is characteristic of chondroid lesions, such as enchondromas and chondrosarcomas. It is due to endochondral mineralization of multiple hyaline cartilage nodules and is similar to popcorn calcification, which has rings and arcs on the background of more amorphous calcification.

In general well-formed rings and arcs are seen in lower grade tumors (see chondrosarcoma grading).

Although considered so by some, the appearance is not pathognomonic for chondral calcification. Rarely, rings and arcs calcification have also been seen with osteoblastomas, as well as CPPD. Nevertheless, the presence of rings, arcs and/or popcorn calcification is highly specific for a chondroid lesion.