The patient proceeded to an endoscopic ultrasound-guided biopsy of the lesion.

Histopathology demonstrated a spindle cell tumor admixed with ganglion cells giving a diagnosis of ganglioneuroma, with no evidence of malignancy.

The radiological appearances in this case are somewhat non-specific and the differential would include other neuromal tumors e.g. schwannoma.

The patient is awaiting discussion at the local sarcoma multidisciplinary team meeting to decide on further management.