Maffucci Syndrome. An Interesting Case and a Review of the Literature.

Maffucci syndrome, a rare sporadic form of enchondromatosis, is characterized by hemangiomas and multiple enchondromas, benign cartilaginous tumors that arise near growth plates. Previous studies demonstrate that individuals diagnosed with Maffucci syndrome have approximately 100% lifetime risk of malignant transformation. Identification of Maffucci syndrome by surgical excision and pathological diagnosis can be life-saving due to its high malignant potential relative to other subtypes of enchondromatosis such as Ollier's disease. We report a case of a 58-year-old man with enchondromatosis who experienced malignant transformation of the enchondroma in his distal femur into a chondrosarcoma. He underwent a right distal femoral replacement without complications. Two years later, new masses were identified in his left hand and excised following progressive growth, pain, and functional limitation. Pathology confirmed these to be hemangiomas, and he was diagnosed with Maffucci syndrome. At last follow-up, patient reported additional nodular tumor growths occurring unilaterally on the left side. For patients with Maffucci syndrome, continual follow-up and careful surveillance of these masses is crucial as these lesions can cause fractures, deformities, pain, and undergo malignant transformation. Our report reviews the literature and outlines the treatment and management plans for patients with this rare and potentially dangerous disorder.