报告经手术证实的12例室间隔膜部瘤,其中10例合并室间隔缺损,1例合并房间隔缺损和肺动脉瓣狭窄,1例单独存在。就发病机理、症状体征、诊断和处理进行讨论,认为凡膜周部室间隔缺损手术时,必须检查膜部间隔是否膨出及是否存在薄弱处,以防漏诊室间隔膜部瘤,并提出切开瘤囊双重加固缝合或补片修补加瘤囊缝合的处理方法较为安全可靠。 Report of 12 cases of surgically confirmed septal meningioma, including 10 cases with ventricular septal defect, 1 case with atrial septal defect and pulmonary valve stenosis, 1 case alone. On the pathogenesis, symptoms and signs, diagnosis and treatment were discussed, that perimembranous ventricular septal defect surgery, you must check the diaphragm interval is bulging and whether there is weakness, to prevent missed diagnosis of septal meningioma, and proposed cut Oncoma double reinforcement suture or patch repair and tumor suture treatment is more safe and reliable.