Acquired torticollis, seen in older children and adolescents, is often secondary to trauma, infection, or tumors. Imaging should be used as a general screening tool only after a complete medical history and clinical findings have been obtained. In newborns or infants with congenital torticollis, ultrasonography (US) is the modality of choice. Adult spinal epidermoid cyst (SEC) is a rare tumor. Lumbar laminectomy and tumor removal was a routine surgical procedure for adult spinal epidermoid cyst according to the literature, but postoperativ A Case of Adult Mature Teratoma Located in Retroperitoneum. Congenital muscular torticollis is frequently associated with the development of a mass in the sternocleidomastoid muscle which resembles a malignant tumor. The mass is not a tumor in the specific sense of a true neoplasm but rather a localized swelling, the result of a reparative process.