恶性组织细胞病 (简称恶组 )亦称组织细胞性髓性网状细胞增生症 ,是一种单核 -巨噬细胞系统的恶性疾病 ,典型的临床表现是发热、衰竭、肝、脾、淋巴结肿大 ,而浆膜腔积液者属少见 ,易误诊。我们遇到 2例 ,均误诊为浆膜腔结核 ,分析报道如下。例 1,女 ,18岁。因发热 4月 ,右胸腔 Malignant histiocytosis (abbreviated as the evil group) is also known as histiocytic myeloid reticulocyte disorder. It is a malignant disease of monocyte-macrophage system. The typical clinical manifestations are fever, failure, liver, spleen and lymph nodes. Swollen, and serous effusion is rare, often misdiagnosed. We encountered 2 cases and all were misdiagnosed as serous cavity tuberculosis. The analysis was reported as follows. Example 1, female, 18 years old. Due to fever April, right chest cavity