患儿:男,4天。因出生后发现剑突部生长联体胎儿双下肢伴脐部包块入院。体检:剑突部连接一畸形短小双下肢及会阴,会阴中央有似“阴囊”及“阴茎头”样物。脐部隆起5 . 5 cm X 4 . 5 cm X 4 . 0 cm大小囊性包块,其表面有透明膜覆盖,膜下可见腹内肠管,囊顶上有脐带残株附着伴脓苔。B超提示腹腔内无异常。X线片可见心肺显影正常,与剑突相连的畸 Children: male, 4 days. Due to the discovery of the growth of the xiphoid after birth associated fetal double lower limb with umbilical mass admission. Physical examination: the xiphoid connected to a short deformity of the lower extremities and the perineum, the central perineal like “scrotum ” and “penis head ” sample. Umbilical uplift 5. 5 cm X 4. 5 cm X 4. 0 cm size cystic mass, the surface covered with a transparent film, the abdominal can be seen under the bowel, umbilical cord stump attached to the top with pus coating. B-prompt no abnormal intra-abdominal. X-ray shows normal cardiopulmonary imaging, and Xiphoid connected abnormal