Recurrent Ganglion Cyst In Peroneus Longus

Area of Science:

• Orthopedic Surgery
• Musculoskeletal Imaging
• Histopathology

Background:

• Ganglion cysts are common benign cystic lesions, typically found in the hand and wrist.
• Intramuscular ganglion cysts are rare, and those arising from the peroneus longus muscle are exceptionally uncommon.

Observation:

• A 45-year-old male presented with a two-year history of a recurrent intramuscular ganglion cyst within the peroneus longus muscle.
• Previous drainage surgery one year prior resulted in recurrence within one month.
• Magnetic resonance imaging confirmed a well-defined, lobulated fluid collection consistent with a ganglion cyst in the proximal peroneus longus.

Findings:

• Surgical exploration identified an encapsulated mass within the peroneus longus muscle belly.
• Complete excision of the ganglion cyst was performed and confirmed by histology.
• Postoperative follow-up at two and six months showed no recurrence and normal neurological function.

Implications:

• Ganglion cysts originating from the peroneus longus can cause leg swelling due to common peroneal nerve compression.
• Complete surgical excision, with meticulous nerve preservation, offers excellent outcomes for these rare intramuscular cysts.