A mass in the left hypochondrium was incidentally detected in 8-year-old man, during a routine abdominal ultrasound examiation for prostate assessment. Patient had a history of Billroth II esection in 1975 for peptic ulcer disease. An abdominal computed tomographic scan (Fig. 1) showed a 3 cm × 11 cm × 10 cm cystic neoplasm with intraluminal vegetaions (arrow) and calcifications (head arrow), just posteriorly to the astric stump. The patient underwent surgery, the mass was excised and the nfiltration from other organs was excluded. At pathological examination (Fig. 2), the specimen was a capulated cystic mass containing corpuscular intraluminal fluid; ragments of a surgical sponge (arrow) were pulled out.