患儿男性,43/12岁。1个月前出现发热,体温最高达39.3℃,伴有盗汗。曾在外院行MRI示腹膜后及腹腔淋巴结肿大,肝内多发异常信号。曾诊断:①肠系膜淋巴结炎;②淋巴瘤待除外。查体:体温36.2℃,右中腹见一长约3cm手术瘢痕。右睾丸缺如。B超示腹腔及腹膜后淋巴结肿大。实验室检查:WBC 10.8×109/L,L 3.6×109/L,N 0.56×109/L;谷丙转氨酶48 U/L,血清碱性磷酸酶211 U/L。患儿幼时曾行“肠套叠”和“右隐睾固定”两次手术。临床 Children with children, 43/12 years old. 1 month ago fever, body temperature up to 39.3 ℃, accompanied by night sweats. In the outer hospital MRI showed retroperitoneal and abdominal lymph nodes, intrahepatic multiple abnormal signals. Had diagnosed: mesenteric lymphadenitis; lymphomas to be excluded. Physical examination: body temperature 36.2 ℃, see a right caesarean section about 3cm surgical scar. Right testicular absent. B ultrasound showed abdominal and retroperitoneal lymph nodes. Laboratory tests: WBC 10.8 × 109 / L, L 3.6 × 109 / L, N 0.56 × 109 / L; alanine aminotransferase 48 U / L, serum alkaline phosphatase 211 U / L. Childhood had “intussusception” and “right cryptorchidism fixed” two surgeries. clinical