单选题原发性免疫缺陷病的最典型特征是（ ）。A易发生恶性肿瘤B营养发育差C反复感染D免疫球蛋白低E淋巴组织发育不良
单选题
原发性免疫缺陷病的最典型特征是（ ）。
A
易发生恶性肿瘤
B
营养发育差
C
反复感染
D
免疫球蛋白低
E
淋巴组织发育不良
参考解析
解析：
原发性免疫缺陷病由于免疫功能缺陷不同，临床表现差异很大。其临床的共同特点是：①对感染的易感性明显增加，反复感染是此病的最大特点。②容易发生恶性肿瘤，某些免疫缺陷病易合并自身免疫性疾病。③临床表现及病理损害多种多样。不同成分的免疫系统缺陷可引起不同疾病；同一种免疫缺陷疾病的患者也可有不同表现。
原发性免疫缺陷病由于免疫功能缺陷不同，临床表现差异很大。其临床的共同特点是：①对感染的易感性明显增加，反复感染是此病的最大特点。②容易发生恶性肿瘤，某些免疫缺陷病易合并自身免疫性疾病。③临床表现及病理损害多种多样。不同成分的免疫系统缺陷可引起不同疾病；同一种免疫缺陷疾病的患者也可有不同表现。
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