儿童外耳、中耳及乳突新生物极罕见,Hyams(1976)报道25000例儿童肿瘤中,仅100例为耳及颞骨原发性肿瘤。根据肿瘤与瘤样病变的组织起源可归纳为1.软组织病变:①结节性筋膜炎,如良性纤维增殖,起源于骨膜或邻近筋膜。有时生长快而误认为恶性;②纤维瘤病,介于修复与肿瘤之间,分局限型及弥漫型。后者于4～6个月时可自行消退。婴儿患者大多死于内脏受累;③横纹肌肉瘤,最常 Children’s outer ear, middle ear and mastoid new organisms are extremely rare. Hyams (1976) reported that out of 25000 cases of childhood tumors, only 100 cases were primary tumors of the ear and tibia. According to the tissue origin of tumor and tumor-like lesions can be summarized as 1. Soft tissue lesions: 1 nodular fasciitis, such as benign fibrosis, originated in the periosteum or adjacent fascia. Sometimes rapid growth is mistaken for malignant; 2 fibromatosis, between the repair and the tumor, localized and diffuse type. The latter can resolve spontaneously within 4 to 6 months. Most of the infant patients died of visceral involvement; 3 Rhabdomyosarcoma, the most common