PO Box 4173
Hamilton East
Hamilton 3247
A tiny camera attached to a long tube is inserted into your mouth and passed down through your pharynx into your oesophagus. This allows the surgeon to make a diagnosis either by seeing directly what is causing the problem or by taking a small tissue sample (biopsy).
https://www.healthpoint.co.nz/private/ent-head-neck-surgery/southern-cross-hamilton-hospital-otolaryngology/