间叶瘤尽管临床上易误诊，但并不少见，而引起躯体畸形的巨大间叶瘤实属罕见。我院于1986、1993年收治两例巨大间叶瘤患者，兹报告如下。例1，女，20岁。出生后发现左下肢较右下肢增粗，随年龄增长增粗迅速。入院时体检：体格发育正常，左下肢自髓关节至足趾末端呈弥漫性肿胀， Although the clinically misdiagnosed mesothelioma is not uncommon, it is not uncommon to see a large mesenchymal tumor that causes somatic deformity. Two patients with giant mesothelioma admitted to our hospital in 1986 and 1993 are reported below. Example 1, female, 20 years old. After birth, it was found that the left lower extremity was thicker than the right lower extremity and thickened rapidly with age. Physical examination on admission: normal physical development, diffuse swelling of the left lower limb from the marrow to the toes.