A rare case of an intraneural ganglion cyst of the median nerve.

Aim of the study: Intraneural ganglion cysts are a relatively uncommon type of ganglion cyst that can affect peripheral nerves. They are particularly rare in the upper limb, and even more so in the median nerve, with the vast majority of them occurring in the peroneal nerves. This paper aims to make the reader aware of this relatively uncommon condition.

Case description: We report a case of a 41-year-old male who presented with a gradually progressing mass on the volar aspect of the wrist extending to the index finger. The nonspecific presentation as well as the rarity of the condition may make diagnosis challenging. The patient was referred for surgical management under a specialist peripheral nerve hand surgeon.

Conclusions: Ultrasound and magnetic resonance imaging as well as awareness of the typical imaging features of this entity are crucial in making the correct diagnosis as well as excluding other potential considerations such as neoplasm.