患者男，25岁。以“左手中指掌面肿胀波及掌上部1年”为主诉入院。专科检查左手中指节达掌横纹处肿胀，皮肤静脉曲张，质实无波动感，皮温正常，无压痛。超声检查左手中指至单横纹之间指深浅屈肌腱周围见低回声实质性肿块包统，上下径8cm，最大前后径2cm，肿块表面不平整，内部 Male patient, 25 years old. “Left middle finger palm swelling affected the palm of the hand for 1 year” as the main complaint. Specialist check the middle finger section of the left palm at the sweat stripes, skin varicose veins, no real fluctuations in the sense of normal skin temperature, no tenderness. Ultrasonography between the left middle finger to a single striae refers to the shallow flexor tendon around the hypoechoic tumor mass, upper and lower diameter 8cm, maximum diameter before and after 2cm, the mass surface is not flat, the internal