1病历摘要男,74岁。近几月来无明显诱因发现左小腿近端内侧包块形成,包块生长迅速,故来就诊。查体:肝脾未触及,心肺听诊未见异常。于患者左小腿上端内侧皮肤下可触及一大小约7cm×4 cm大小硬块,边界尚清晰,无红肿,无搔痒,无疼痛,无压痛及反跳痛,左小腿活动轻度受限。临床诊断为 1 medical record male, 74 years old. In recent months there is no obvious incentive to find the formation of the proximal medial mass of the left calf, mass rapid growth, it came to the clinic. Physical examination: liver and spleen not touched, no abnormal heart and lung auscultation. In the patient’s left lower extremity under the skin can reach a size of about 7cm × 4cm size lumps, the border is clear, no swelling, no itching, no pain, no tenderness and rebound tenderness, mild left leg restriction was limited. Clinical diagnosis is