伤寒症骨髓象中出现吞噬型网状细胞(即伤寒细胞)及网状细胞增生。其在网状细胞增生症的分类中则属于反应性网状细胞增生症。这种肠伤寒症的骨髓象特征显然由于感染所致。1962年9月,我们曾遇一例发热、脾肝肿大,伴贫血的患者,当时疑诊为“白血病”;经骨髓检查,网状细胞增生显著(图1),呈现活跃的吞噬血细胞现象,并发现少量异形网状细胞,因而又疑为“恶性网状细胞病”。但伤寒血清凝集试验为阳性 In the typhoid bone marrow, phagocytic reticular cells (typhoid cells) and reticulocyte hyperplasia appear. It belongs to reticulocytic hyperplasia in the classification of reticulocytosis. Myeloid features of this typhoid fever are apparently caused by the infection. In 1962 September, we had a case of fever, spleen enlargement, anemia patients were suspected to be “leukemia”; by bone marrow examination, reticulocyte hyperplasia (Figure 1), showing the phenomenon of active phagocytosis, And found a small amount of abnormal reticulocytes, and therefore suspected “malignant reticulosis.” But typhoid serum agglutination test is positive