Figure 1 Conventional endoscopic view of the prepyloric region of the stomach, showing a well-circumscribed
area of reddened mucosa which was interpreted as “antral gastritis”.
Figure 2 The same region visualised using a high-resolution zoom endoscope (Olympus GIF-Q240Z;
Olympus Optical Co. Ltd., Tokyo, Japan) with distal cap attachment and the Lucera
system video endoscopy processor (Olympus CV-260). This equipment provides the advanced
features of adaptive index of haemoglobin (IHb) colour and structural enhancement,
which emphasises subtle chromatic alterations in the mucous membrane. We visualised
coil-like capillary loops of normal antral mucosa (white arrows, upper left), a clear
demarcation line between cancerous and noncancerous mucosa (black arrows), and a leash
of irregular vessels suggestive of neovascularisation and angiogenesis secondary to
dysplasia (grey arrows). Targeted biopsies were obtained and histological examination
revealed high-grade dysplasia.
Competing interests: Not declared
