A 25-year-old patient presents with multiple hard swellings on their hands and feet, which radiographs confirm as multiple enchondromas. Upon physical examination, several blue, compressible subcutaneous nodules are noted on the extremities. This clinical picture defines which of the following syndromes?

Explanation:
Maffucci syndrome is a rare, nonhereditary disorder characterized by the presence of multiple enchondromas combined with multiple soft-tissue hemangiomas (the blue, compressible nodules). It carries a very high risk (up to 100% over a lifetime) of malignant transformation, usually to chondrosarcoma. Ollier disease is multiple enchondromatosis without the hemangiomas. Reference: Tachdjian's Pediatric Orthopaedics, 6th Edition.