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儿童皮肤肥大细胞增生症1例报告

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摘要 患者,女,5岁,因“全身皮肤褐色斑点、丘疹伴瘙痒1月”于2015年8月9日在我院皮肤科就诊。查体:全身皮肤浅褐色斑点、丘疹,直径0.2~1.0 cm,部分斑点融合成斑块,以躯干皮肤为重(图1),累及颜面及四肢皮肤,伴有瘙痒。既往1年前因“右卵巢”恶性混合性生殖细胞肿瘤,即无性细胞瘤合并不成熟畸胎瘤( WHO,II级)在外院行肿瘤切除术后,化疗三次(末次化疗时间为2015年1月)。复查腹部彩超未见异常;外周血检查未发现异常细胞。临床诊断:①急性痘疮样苔藓样糠疹;②副银屑病;③扁平苔藓;④色素性荨麻疹。病理检查:取背部皮肤组织一块送活检,大小约0.8 cm ×0.6 cm ×0.5 cm,皮肤表面呈浅褐色改变,未见新生物,切面灰白、实性,皮下脂肪极少。镜下观察:表皮棘层肥厚,基底细胞增生活跃伴色素沉着;真皮乳头及真皮浅层可见中等大小单核细胞呈带状浸润(图2a),细胞形态较一致,细胞核圆形或卵圆形,部分可见细小核仁,细胞浆较丰富,高倍镜下可见嗜酸性或双嗜性的细小、模糊颗粒(图2b);真皮中下部及皮下脂肪形态未见特殊。 Giemsa染色:真皮浅层呈带状浸润的单核细胞胞浆内可见多个紫红色颗粒(图2c)。免疫组织化学染色:该类细胞表达CD117(图2d)、CD68和白细胞共同抗原(CD45)(图2e),不表达CD3、CD20、髓过氧化物酶( MPO)、S-100蛋白、广谱型细胞角蛋白( PCK)和CD34,Ki-67阳性指数约3~5%。病理诊断:(背部)皮肤肥大细胞增生症。
出处 《实用医院临床杂志》 2016年第6期174-175,共2页 Practical Journal of Clinical Medicine
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