2讨论
原发于椎管硬膜外的NHL组织细胞型国内罕见。该例NHL首发于胸椎管硬膜外,病后8个月内未发现全身淋巴造血系统恶性淋巴瘤及其它部位恶性肿瘤存在,骨髓像结果为反应性增生,Ph染色体阴性,故可排除各型白血病及转移瘤而诊断为原发性胸椎管硬膜外恶性淋巴瘤。该例临床特点为:①血沉显著增快;②外周血及骨髓早期受侵[1]:早期出现外周血白细胞总数增高,淋巴细胞持续增高。提示首发于椎管内硬膜外占位性病变,无全身淋巴造血系统症状体征,出现上述特点时要考虑原发性恶性淋巴瘤,并注意与淋巴细胞白血病鉴别。
Fig.1 The photomicrograph shows the tumor cells are round and oval,their cytoplasm are aboundant and eosinophilic.The nuclei with a clera-cut nucleoli are round or oval or kidney-shaped. The membrane of mnucleus is thin and distinct.The chromoplasm is fine and well-distributed.The neoplastic cells which hare aboundnt microvessels and rare fibrous tissue in the stroma are arranged dispersedly.The tumor cells infiltrate dura mater(×200).
1 肿瘤的组织病理显示肿瘤细胞呈圆形、类圆形,细胞质丰富,嗜酸性,胞核呈圆形、类圆形或肾形,核膜薄而清楚,染色质细而均匀,核仁清楚,肿瘤细胞呈弥温性排列,间质血管丰富。纤维组织少,瘤组织浸润硬脊膜(HE×200)
Fig.2 Immunohistochemistry shows some brown-stained granule in cytoplasm of parts of tumor cells which indicate the positive lysozyme staining(×400)
2 免疫组化染色:部分肿瘤细胞胞质内见棕黄色颗粒,提示溶菌酶阳性(×400)
Fig.3 Immunohistochemistry of L26 in negative(×400)
3 免疫组化染色:L26阴性(×400)
Fig.4 Immunohistochemistry of UCHL is negative (×400)
4 免疫组织染色:UCHL阴性(×400)
参考文献
1,宋少章.恶性淋巴瘤与白血病.见:王奇璐主编.恶性淋巴瘤的诊断与治疗.北京:北京医科大学中国协和医科大学联合出版社,1997.190~195
(1999-08-31收稿)
