Retroperitoneal Malignant Peripheral Nerve Sheath Tumor Associated with Scoliosis in Neurofibromatosis

Neurofibromatosis 1 is an autosomal dominant disorder characterized by distinctive clinical problems including scoliosis and malignant peripheral nerve sheath tumors. We present two cases of retroperitoneal malignant peripheral nerve sheath tumor associated with scoliosis in neurofibromatosis. Presence of spinal deformity resulted in delay of the diagnosis of the sarcoma.