患者男,57岁,汉族,羊场牧工。因外耳郭内上方发现肿物4个月,进行性增大3个月,于1993年11月7日来我院就诊。患者在4个月前左耳被蚊子叮咬后瘙痒搔抓,发现左耳郭内上方有一包块,如黄豆大小,不红,不痛,不热,未予理会;1个月后包块进行性增大,并有痒、麻、胀感。既往无外伤史,有牛、羊、犬接触史。检查:左耳郭内上方有一肿物,如蚕豆 Male patient, 57 years old, Han nationality, sheep farm animal husbandry. Due to the outer ear Guo found mass 4 months, progressive increase 3 months, in November 7, 1993 to our hospital. Patients 4 months ago left ear was mosquito bites pruritus scratching and found that there is a pack above the left ear Guo Guo, such as soybean size, not red, no pain, not hot, did not care; 1 month after the mass Sex increases, and itchy, hemp, bulging feeling. No previous history of trauma, cattle, sheep, dogs contact history. Check: There is a tumor above the left ear Guo, such as fava beans