报告1例巨大副脾的诊断和治疗经过，提示临床警惕巨大副脾的存在，减少误诊误治。注意副脾的血供多样性，减少术中出血。

回顾总结1例左上腹占位的患者资料，结合术前影像学检查、腹腔镜手术中探查所见，以及病理结果，完整记录诊治经过。

完成腹腔镜手术操作，术中妥善结扎巨大副脾的血管，没有出现其他副损伤；术后病理证实左上腹占位是副脾合并出血梗死。患者术后3 d治愈出院。

本例巨大副脾罕见，术前存在症状和体征，手术指征明确，微创治疗手段安全有效，效果满意。

To introduced the diagnosis and treatment of an oversized accessory spleen case. It suggested that clinician should be alert to the existence of giant accessory spleen, and reduced misdiagnosis and mistreatment. During operation, must keep in mind to the diversity of blood supply of accessory spleen and less bleeding.

In this retrospective study, a patient suffering a left upper abdominal mass was performed by laparoscopic surgery, and the diagnosis and treatment were recorded with preoperative imaging data and pathological results after operation.

Laparoscopic splenectomy was performed.The supplied vessels of the oversized accessory spleen were ligated properly and prevented other adverse effects. Postoperative pathology confirmed accessory spleen combined with hemorrhage and infarction.Patient discharged uneventfully 3 days later.

This oversized accessory spleen case was rare. And the patient had the indication of splenectomy. The treatment by minimally invasive approach was feasible and safe.