66-year-old male with a 4 cm firm nodule distal to the medial malleolus. Differentiate between a ganglion cyst versus epidermoid cyst. TENDONS: The flexor and extensor tendons appear intact. The peroneal tendons appear intact. The Achilles tendon is normal in appearance.LIGAMENTS: The lateral collateral ligament complex appears intact. The distal tibiofibular syndesmotic complex appears intact. The deltoid ligament appears intact.ARTICULAR SURFACES AND BONE: No bone marrow signal abnormalities identified. ADDITIONAL
Nonspecific 3.4 cm heterogeneous mass with thick nodular and septal enhancement as described above, which does not have the appearance of a simple cyst or ganglion, as clinically questioned. Neoplasm cannot be excluded by this examination.