A 62-year-old male with ganglion cyst around the hallux. On axial view magnetic resonance imaging, ganglion cysts around the hallux had communicating stalks with the interphalangeal joint, and there was a large fluid accumulation within the synovial sheath of the flexor hallucis longus. This patient also had a joint effusion in both the metatarsophalangeal and interphalangeal joints.