A case of duodenal adenocarcinoma treated with primary chemoradiation.

Duodenal adenocarcinoma represents <1% of total gastrointestinal malignancies. Given the rarity of the disease, a definitive treatment guideline is lacking. Surgery plays a major role and radiotherapy was not included in the treatment due to the presence of many critical structures near the vicinity of the duodenum such as the liver, kidneys, and bowel. However, with the advent of newer techniques, adjuvant chemoradiation has shown a promising result with improvement in locoregional control by 20%. We are herewith presenting the details of the radiation planning of a patient treated with chemoradiation who had good long-term outcome.