表皮囊肿合并脂溢性角化

2019-11-05 马仁燕 骆丹 许阳 临床皮肤科杂志

主诉:颈胸部结节 3 个月。 现病史:患者自诉 3 个月前颈胸部无明显诱因出现一黑色结节,同时其侧缘出现一褐色斑块,逐渐增大,伴 轻度瘙痒,于 2015 年 12 月 14 日至南京医科大学第一附属医院皮肤科门诊就诊。

患者女,57 岁。 

主诉:颈胸部结节 3 个月。 现病史:患者自诉 3 个月前颈胸部无明显诱因出现一黑色结节,同时其侧缘出现一褐色斑块,逐渐增大,伴 轻度瘙痒,于 2015 年 12 月 14 日至南京医科大学第一附属医院皮肤科门诊就诊。 

既往史及家族史:既往体健,家族成员中无类似疾病患者。 

体格检查:各系统检查均未见明显异常。 

皮肤科检查:颈胸部一约 0.5 cm×0.5 cm 黑色皮下结节,中间可见一开口,可以移动,质地硬,有轻压痛;其外 侧一约 0.5 cm×0.5 cm 褐色斑块,境界清楚(图 1A),质地硬,无明显压痛。 

皮肤镜及皮损组织病理检查:皮肤镜检查可见一黑色皮下结节,中央孔可见黑色角栓;其左下方一边界清楚的 褐色斑块,角化过度,可见脑回状结构及粟丘疹样囊肿(图 1B)。 皮损组织病理检查示表皮棘层肥厚,可见角囊肿,基 底位于同一水平面上,两端与正常表皮相连;真皮浅层单发囊肿结构,囊壁由上皮细胞构成,囊内见角质物(图 2)。 

诊断:表皮囊肿合并脂溢性角化。 

治疗:手术切除,随访 2 年无复发。



A:颈胸部黑色皮下结节,中间可见一开口,其外侧见一褐色斑块,境界清楚; B:皮肤镜下见一黑色结 节,结节中央孔可见角栓;其左下方一边界清楚的褐色斑块,可见脑回状结构及粟粒样囊肿 图 1 表皮囊肿合并脂溢性角化患者颈胸部皮损及皮损皮肤镜观察



表皮棘层肥厚,可见角囊肿,基底位于同一水平面上,两端与正常表皮相连;真皮浅层 单发囊肿结构,囊壁由上皮细胞构成,囊内见角质物(HE 染色 ×25) 图 2 表皮囊肿合并脂溢性角化患者皮损组织病理像

简介:表皮囊肿(epidermal cyst)是最常见的皮肤囊肿,可发生于身体任何部位,面部、躯干上部多见,呈圆 形、隆起性结节,可有中央孔,提示囊肿起源于毛囊,是表皮囊肿的特征性表现[1]。 本例患者皮损皮肤镜下可见清 晰的中央孔及其中角栓,有助于临床诊断。 表皮囊肿可起源于破坏的毛囊结构或外伤性植入性上皮,据文献报 道,表皮囊肿可合并其他皮肤肿瘤包括鳞状细胞癌[2]、基底细胞癌、佩吉特病、鲍恩病、蕈样肉芽肿、梅克尔细胞癌 [3]等,相关机制可能与慢性炎症、免疫抑制、光化性损伤和人乳头瘤病毒(HPV)感染有关。 脂溢性角化(seborrheic keratosis, SK)是临床常见的表皮良性增生,临床表现为淡褐色、综色或黑色斑疹或 扁平丘疹,表面光滑或略呈乳头瘤状。 皮肤镜下的表现主要包括边界清楚、网格模式、胖手指结构、脑回样结构、 粉刺状开口、粟粒样囊肿、发夹样血管等[4]。 本例患者皮肤镜下可见典型的脑回状结构与粟粒样囊肿,结合临床和 皮肤镜下表现可明确诊断。 SK 可有 3 种类型的细胞组成,包括基底样角质形成细胞、棘细胞和黑素细胞,文献报 道合并的皮肤肿瘤包括基底细胞瘤、鲍恩病、鳞状细胞癌以及黑素瘤等,可能与起源于这3 种不同的细胞类型有 关。 本例患者同时存在可从角质形成细胞来源的两种向表皮内外不同方向生长的良性增生性皮损,既往文献尚 未有类似报道,确为同源亦或偶然并发,值得进一步研究。

参考文献略。

原始出处:

马仁燕, 骆 丹, 许 阳等,表皮囊肿合并脂溢性角化[J],临床皮肤科杂志,2019,48(9):527-529.

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