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Ewing(1921)首先报告此种肉瘤60%以上发生于四肢长骨,发生于下颌骨者罕见。本病好发于儿童、少年,95%发生在5.5～25岁。病例:患者张×,男,10岁,病案号37896。因左下颌角膨隆,发现1周后于1983年5月23日入院。检查:全身查体无特殊。左下颌角骨质膨隆,约4×4cm,质硬,皮肤色泽正常,无压痛。X 线摄片:左下颌角见均质的圆形阴影,密度增高,边界清楚,骨皮质界限不清,无骨膜反应。实验室检查无异常。于1983年5月27日行肿块切除术。术中见左下颌角骨
Ewing (1921) first reported that more than 60% of the sarcomas occur in the long bones of the extremities and are rare in the mandible. The disease occurs in children, adolescents, 95% occurred in 5.5 to 25 years of age. Case: Patient ×, male, 10 years old, case number 37896. Due to left mandibular bulge, found after 1 week in May 23, 1983 admission. Check: No special body examination. Left mandibular angle bone bullae, about 4 × 4cm, hard, normal skin color, no tenderness. X-ray: the left mandibular angle see a homogeneous round shadow, increased density, clear boundaries, cortical boundaries, no periosteal reaction. No abnormal laboratory tests. May 27, 1983 line of tumor resection. See surgery left mandibular angle bone