Enchondroma (A-D) and Chondrosarcoma (E-H) tumour characteristics are displayed. A radiographic image (A) of a typical enchondroma located in the proximal phalangx and its’ histological image with toluidine blue stain (B). Part C shows the distribution of enchondromas in the hand. A slightly higher prevalence emerges for the fourth decade. Microscopically (D), the tumour consists of lobulated hyaline cartilage proliferation without cellular atypia. Chondrosarcomas were only found in the phalanges or metacarpals (G). Radiographic (E) and histological images (hematoxylin and eosin stain [HE]) (F) demonstrated a typical cartilage tissue not respecting the structural boundaries. A higher incidence rate was found from the sixth decade onwards. Chondrosarcoma was microscopically characterised by slight cellular atypia and invasive growth (H).