Abstract：
A 25-year-old man presented with gradually increasing swelling of 15 years\' duration on the left side of his neck. There had been occasional foul-smelling discharge from the swelling. Local examination revealed an 8 cm × 5 cm oblong-shaped, yellowish to skin-colored, soft, -cerebriform swelling. There were multiple open comedones (Figure 1a). The surrounding skin had small and soft skin-colored papules. On palpation, there was no ulceration, tenderness, induration, or bag of worms. A scar from the past surgery was visible. Systemic examina- tion was unremarkable. The differential diagnosis demonstrated plexiform neurofibroma and nevus lipomatosus cutaneous superficialis (NLCS; Figure 2).
摘要：
一名25岁的男子在他的颈部左侧出现了15年的逐渐增加的肿胀。肿胀偶尔会有恶臭的分泌物。局部检查发现8厘米×5厘米的长方形，黄色至肤色，软,-大脑样肿胀.有多个开放的粉刺（图1a）。周围皮肤有小而柔软的皮肤颜色丘疹。在触诊时，没有溃疡,压痛,硬结,或者成袋的虫子.可见过去手术的疤痕。系统性检查并不显著。鉴别诊断显示丛状神经纤维瘤和皮肤浅表脂瘤痣（NLCS；图2）。
