bone benign neoplasm chondroblastoma https://www.malacards.org/card/chondroblastoma GARD:0006047 ICDO:9230/0 chondroblastoma (disease) MEDGEN:40270 NANDO:2200051 DOID:2649 EFO:0000331 NCIT:C2945 MONDO:0004997 MESH:D002804 CHBL chondroblastoma ONCOTREE:CHBL chondroblastoma (disease) HP:0030432 UMLS:C0008441 A benign, chondroid-producing, well-circumscribed, lytic neoplasm usually arising from the epiphysis of long bones. It is characterized by the presence of chondroblasts, osteoclast-like giant cells, chondroid formation, calcification, and mitotic activity. In aggressive cases, there is rearrangement of the 8q21 chromosome band. It occurs most frequently in children and young adults and rarely metastasizes. benign chondrogenic neoplasm