恶性淋巴瘤（ＭＬ）是一组原发于淋巴结或结外组织的恶性肿瘤，病变部位广泛，临床表现复杂多变，且缺乏特异性，故极易误诊。我们收集我院自１９８５年１月－１９９９年５月收治的ＭＬ１１０例，其中９０例在院内外各科首诊时被误诊为３０余种疾病，误诊率达８１．８％。... Malignant lymphoma (ML) is a group of malignant tumors that originate in lymph nodes or extranodal tissues. It has a wide range of lesions, complicated clinical manifestations, and lack of specificity. Therefore, it is easily misdiagnosed. We collected ML110 cases from January 1985 to May 1999 in our hospital. Among them, 90 cases were misdiagnosed as more than 30 diseases at the first visit to the various departments within and outside the hospital. The misdiagnosis rate was 81.8%. ...