Duodenal duplication
cysts are benign rare congenital anomalies reported mainly in the pediatric population, but seldom in adults. Symptoms depend on the type and location and can present as
abdominal pain, distension,
dysphagia or
dyspepsia. They have been reported to be responsible for
duodenal obstruction,
pancreatitis and, in rare cases, gastrointestinal
bleeding. We present a case of a duodenal duplication
cyst in a 43-year-old man presenting as
melena. Initial gastroduodenoscopy and colonoscopy did not reveal any
bleeding focus. However, the patient began passing
melena after 3 d, with an acute decrease in
hemoglobin levels. Subsequent studies revealed a duplication
cyst in the second portion of the duodenum which was surgically resected. Histology revealed a duodenal duplication
cyst consisting of intestinal mucosa. There was no further
bleeding and the patient recovered completely. In rare cases, duodenal duplication
cysts might cause gastrointestinal
bleeding and should be included in the differential diagnosis.