What type of tumors are most commonly associated with Ollier's disease or Maffucci's syndrome?

• A. Osteomas
• B. Enchondromas
• C. Chondrosarcomas
• D. Fibromas

Answer: (B)

Ollier's disease and Maffucci's syndrome are both conditions characterized by the development of multiple enchondromas, which are benign cartilaginous tumors that primarily affect the bones. These conditions display a genetic predisposition towards the formation of these tumors, often appearing in a pattern that suggests a non-malignant growth.

In Ollier's disease, patients develop multiple enchondromas localized to the bones, whereas Maffucci’s syndrome includes additional features, such as the presence of soft tissue hemangiomas alongside the enchondromas. The enchondromas can vary in size and distribution but are predominantly found in the long bones and can lead to bone deformities and complications.

Due to their benign nature, enchondromas are considered the hallmark tumors of both Ollier’s disease and Maffucci’s syndrome, distinguishing them from other types of tumors such as osteomas, chondrosarcomas, or fibromas, which do not share the same direct association with these syndromes. While chondrosarcomas can arise from enchondromas, this occurs less frequently and does not define the syndromes themselves, which center around the presence of the enchondroma.