患儿男,年龄10个月。因腹部包块行剖腹探查,肿块位于网膜囊内,占据大半个腹腔,包膜完整,表面凹凸不平,囊实混杂,与周围组织轻度粘连,有一短蒂与贲门胃小弯侧相连,长约1 cm,基底3×1 cm,其内有滋养血管通过,瘤体包膜在此与胃壁相延续,瘤体重量1,170克,长、宽、厚分 Male child, age 10 months. The abdominal mass was examined by laparotomy. The mass was located in the omental sac and occupied most of the abdominal cavity. The capsule was intact, the surface was uneven, and the capsules were mixed. They had mild adhesion to the surrounding tissue and a short pedicle was connected to the small curve side of the gastric cardia. About 1 cm long, the base 3 × 1 cm, which has nourishing blood vessels through, the tumor capsule and the stomach wall in this continuation, tumor weight 1,170 grams, length, width, thickness points