例 1 .患者 2 2岁 ,未婚。住院号 2 72 2 5 8。于 1年前无意中发现阴道口脱出一肿块。肿块约小指头大小 ,质地软 ,无不适。近 1年来 ,该肿块逐渐增大至鸡蛋大小 ,发病以来无不适 ,无尿频、尿急及排尿困难。于 1 998年 8月 1 8日收住我院。查体 :全身皮下无结节 ,阴道前壁近处女 Example 1. Patient 2 2 years old, unmarried. Hospital number 2 72 2 5 8. A year ago, inadvertently found vaginal prolapse of a lump. About the size of a small finger mass, soft texture, no discomfort. Over the past year, the mass gradually increased to the size of eggs, no discomfort since onset, no frequent urination, urgency and dysuria. In August 18, 1998 admitted to our hospital. Physical examination: systemic subcutaneous nodules, vaginal anterior wall near the virgin