共查询到20条相似文献,搜索用时 46 毫秒
1.
《中国皮肤性病学杂志》2017,(11)
血管周上皮样细胞肿瘤(perivascular epithelioid cell tumors,PEComa)是一类在组织学、免疫表型及超微结构中均呈现平滑肌细胞及黑色素细胞分化的间叶性肿瘤。然而PEComa的细胞来源仍然不明,皮肤外PEComa和皮肤PEComa的具体联系也尚不明确。本文回顾了近年来国内外文献,从临床表现、组织病理学特征、染色体异常、鉴别诊断及治疗等方面着重对原发皮肤PEComa进行描述。 相似文献
2.
《中国皮肤性病学杂志》2019,(10)
患者男,64岁,头枕部肿物5年余,增大3个月入院。镜下见真皮内片状异型上皮样细胞,肿瘤细胞异型性明显,胞浆丰富,核仁明显,核分裂象易见,可见不规则裂隙样结构形成,并见片状出血。免疫组织化学染色:CD31(+)、 ERG(+)、FIi-1(+)、INI-1(+)、Ki67阳性细胞数大于50%。本病病理及免疫组织化学有其独特的特征,早期行病理检查有助于诊断及鉴别诊断。 相似文献
3.
4.
5.
6.
7.
8.
《中国皮肤性病学杂志》2015,(6)
患者男,40岁。双耳廓皮疹3个月。查体:双耳廓、外耳道口可见质地欠均的浸润性肤色结节、斑块,表面光滑无鳞屑,质韧,无压痛,无糜烂、渗出及溃疡。皮损组织病理示:表皮角化过度,真皮浅层淋巴管扩张,浅中层血管增生、可见血管内皮细胞肿胀、突向管腔,血管、淋巴管及附属器周围见淋巴细胞、组织细胞及稀疏的嗜酸性粒细胞浸润。诊断:上皮样血管瘤。 相似文献
9.
10.
11.
12.
13.
14.
15.
Primary cutaneous perivascular epithelioid cell tumor (PEComa): Five new cases and review of the literature 下载免费PDF全文
Lauren N. Stuart Russell G. Tipton Michael R. DeWall Douglas C. Parker Christina D. Stelton Annie O. Morrison Landon W. Coleman Scott W. Fosko Claudia I. Vidal Maria Yadira Hurley Amy H. Deeken Jerad M. Gardner 《Journal of cutaneous pathology》2017,44(8):713-721
PEComas represent a family of uncommon mesenchymal tumors composed of “perivascular epithelioid cells” with a distinct immunophenotype that typically shows both myogenic and melanocytic differentiation. The PEComa family includes angiomyolipoma (AML), clear cell “sugar” tumor of the lung and extra pulmonary sites, lymphangioleiomyomatosis and clear cell myomelanocytic tumor of the falciform ligament/ligamentum teres. Very rarely, PEComas may arise in the skin. Primary cutaneous PEComas typically display a dermal proliferation of epithelioid cells with pale, clear, or granular pink cytoplasm arranged in nests and trabecula with an intervening arborizing network of delicate capillaries. Primary cutaneous PEComas have a lower frequency of myogenic marker expression than their deep soft tissue and visceral counterparts. They also often express strong diffuse CD10, leading to potential confusion with metastatic renal cell carcinoma. Most cases behave indolently. We report 5 additional cases of this rare entity. All showed classic histologic features and expression of either HMB‐45 and/or Melan‐A/MART‐1. Four cases were tested for myogenic markers (2 were positive & 2 were negative). Three cases were tested for CD10 (all 3 were positive). All of our cases with clinical follow‐up behaved indolently. Table 1 provides a summary of findings for all 5 cases in our series. 相似文献
16.
17.
报告1例皮肤上皮样血管瘤性结节。患者女,23岁。因左眼角起结节6月余来我科就诊。组织病理检查示表皮萎缩变薄,两端皮角下延,呈抱球状包围肿瘤结节,该结节由大量上皮样内皮细胞组成。免疫组化染色显示CD34阳性,LCA阴性,CK5/6阴性,Ki-67阳性。诊断:皮肤上皮样血管瘤样结节。组织病理上该病需与上皮样血管瘤鉴别。 相似文献
18.
19.
患者男,31岁。因左上臂多发性暗红色丘疹、结节1年于2012年5月来我科就诊。患者1年前无明显诱因发现左上臂内侧出现数个米粒大小暗红色丘疹、结节,无明显自觉症状,皮损逐渐增多并蔓延至左上臂伸侧,无破溃及出血。数月后部分皮损色泽变为暗褐色,未经系统和外用药物治疗。临床初步考虑Kaposi肉瘤、血管角皮瘤待排。发病以来,无畏寒、发热及近期体重减轻,否认病前皮损及周围皮肤有外伤、感染和其他皮肤病史。无类似疾病家族史。患者以往体健,否认有慢性感染性疾病如肝炎、结核;无自身免疫系统疾病及其他系统疾病史…… 相似文献