病历摘要患儿男，１１岁，因间断左胸疼痛５个月入院。５个月前患儿出现无诱因胸痛，每５～６天发作１次，每次持续５～６分钟。无发热及心慌气短。４个月前于当地医院治疗１０天，用药不详，效果欠佳。入院前３天突然高热３９℃，随后出现咳嗽，拍Ｘ线胸片后于１９９７年５月? Summary of medical records Children male, 11 years old, left chest pain due to intermittent 5-month admission. 5 months ago, there was no incentive chest pain in children, every 5 to 6 days attack 1, each lasting 5 to 6 minutes. No fever and palpitation shortness of breath. 4 months ago in the local hospital for 10 days, medication is unknown, the effect is not good. 3 days before admission suddenly high fever 39 ℃, followed by cough, after taking X-ray chest in May 1997?