一位30岁HIV阳性同性恋男性患者左耳廓、耳后肿胀2周，曾思红细胞增多症及细菌性肺炎，无机会感染史。耳廓受过轻伤，门诊给予耳部滴药，口服抗生素治疗，无改善。入院后检查发现左耳廓及耳后浸润改变。其表面皮肤充血、水肿，外耳道几乎完全堵塞，未触及色块，其余的体格检查 A 30-year-old HIV-positive homosexual male patient with a left auricle, swelling in the ear for 2 weeks, evergreen polycythemia, and bacterial pneumonia with no history of opportunistic infections. Auricle suffered minor injuries, ear drops to the clinic, oral antibiotics, no improvement. After admission examination found that the left auricle and ear infiltration change. The surface of the skin congestion, edema, external auditory meatus is almost completely blocked, did not touch the color, the rest of the physical examination