From the case:
Chondrosarcoma - grade I (gross pathology)
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Cut surface of the humerus demonstrates multi-lobulated endomedullary lesions, bluish-white, homogenous and glistening in appearance consistent with hyaline cartilage. There is no extension through cortex.
Case Discussion
Distinguishing a low grade chondrosarcoma (as in this case) from and enchondroma is generally not possible macroscopically and relies on histological features.
Case reproduced with permission, courtesy of Dr. Katharina Glatz, Basel, Switzerland, Pathorama.ch. All rights reserved; please see original case for copyright information.