title: "Aggressive" chondroblastoma. Light and ultramicroscopic findings after en bloc resection.
abstract: A chondroblastoma of the proximal humerus in a 15-year-old boy was removed en bloc due to its very large size and locally destructive, aggressive character. This case is reported because of the rarity of chondroblastomas excised en bloc; specimens were examined in detail by correlated roentgenographic, gross inspection, histologic and electron-microscopic methods.
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D002804:Chondroblastoma / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D006801:Humans; D006811:Humerus; D008297:Male; D009361:Neoplasm Invasiveness