Fibrocartilagenous dysplasia: A rare variant of fibrous dysplasia

Fibrous dysplasia (FD) is a benign disorder affecting one or more bones seen in all age groups and shows no geographical, racial and sex predilection. Fibrocartilaginous dysplasia (FCD) is a type of fibrous dysplasia where there is extensive cartilaginous differentiation. Our patient was a young girl with a 2 year history of pain in the right forearm and hip. Imaging studies showed multiple lucent lesions in the femur, humerus and radius. Microscopic examination of the curetted fragments from the lesion showed predominant cartilaginous components with focal fibro-osseous areas and areas of enchondral ossification. We present this case due to its rarity and the importance of distinguishing FCD from other benign and malignant cartilaginous tumors as it mimics these in clinical and histological features.