肾上腺原始神经外胚层肿瘤临床及病理分析

目的 分析肾上腺原始神经外胚层肿瘤(PNET)的临床及病理特点. 方法肾上腺PNET患者4例.男2例,女2例.平均年龄24(21、22、24、30)岁.常规实验室及内分泌检查无阳性发现.B超、CT检查示肾上腺区边界欠清的巨大囊实性软组织肿块,直径平均12(8～17)cm. 结果 1例穿刺活检确诊后拒绝治疗,6个月后死亡;1例手术探查后行减瘤术,术后8个月死亡;行肿瘤根治性切除治疗2例,术后1个月出现远处转移1例,肿瘤局部复发1例,4例病理学检查光镜下可见典型的Homer-Wright菊形团,免疫组织化学染色CD99阳性.病理诊断均为PNET. 结论 肾上腺PNET是一种罕见的原始神经外胚叶来源肿瘤,好发于青年,临床及影像学无特殊表现,确诊依据病理学检查.肿瘤恶性度高,进展迅速,预后极差.

Clinical and pathological analysis of primitive neuroectodermal tumor of adrenal

Objective To analyze the clinical and pathological features of the adrenal primitive neuroectodermal tumors(PNET). Methods Four cases of PNET were analyzed.Of them,2 were males and 2 females,aged from 21 to 30 years old with a mean age of 24.No significant abnormal data was found in routine laboratory and endocrine examinations.The CT scan showed a soft tissue mass with unclear boundary and cystic changes in adrenal area.The tumor diameter was 8-17 cm. Results One patient refused treatment alter diagnosed by biopsy and died 6 months later.Another one received palliative operationand died after 8 months.The third patient was found distant metastasis 1 month after operation and had radiotherapy and chemotherapy.The fourth patient was found local tumor recurrence 1 month after operation,and started chemotherapy.All patients were diagnosed by pathology.At HE staining,tumor was consisted of even,uniform small round cells;the cells distributed diffusively or formed lobulated structures (Homer-Wright rosette).Immunohistochemical staining showed CD99 positive in all 4 patients. Canclusion The adrenal PNET is a rare disease originated from primitive neuroectodermal,mostly occurs between 20 and 30 years old,and has non-specific clinical and imaging findings.Histopathologieal examination is the key point for diagnosis.Rapid progression,highly malignant,poor prognosis are the characteristics of this disease.