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jingli5282 离线
病史:女,36岁,主因咯血2天入院
2天前无明显诱因突然咳嗽伴咯血,呈间断性,咯血6次,约50ml.无咳痰。
胸片:左侧心缘后可见一类圆形高密度影,边界欠清
CT:左肺下叶见一类圆形高密度影,大小3.93x3.89xx3.00cm,密度较均匀,边缘光整,临近支气管血管束见受压改变。
大体:切除的肺叶,大小9.5x7.5x4cm,距残端3cm处可见一灰白色结节,大小3x2x1.2cm,质软。
本例图片采用麦克奥迪MoticBA410显微镜+MoticPro285A摄像头采集制作。
点评专家:徐浩东老师(美国)
专家介绍:http://teach.ipathology.cn/article/2424.html
点评专家:徐浩东(53楼 链接:>>点击查看<< )
获奖名单:mmmjjj222(11楼 链接:>>点击查看<< )
n03553522119 离线
以下为徐浩东老师的点评:
Sections of the relatively circumscribed 3.0 cm tumor show solid, sclerosing and angiomatoid histologic patterns of growth. Foci of foamy macrophages are present. Surface tumor cells are cuboidal and resemble reactive type II pneumocytes. Round cells are small with oval nuclei, disperse chromatin, inconspicuous nucleoli and rare mitotic figures. The differential diagnosis includes sclerosing hemangioma (pneumocytoma), papillary adenoma,clear cell tumorand carcinoid tumor. IHC staining results: surface tumor cells, EMA+, TTF-1+, CK+, S-100- and HMB45 -; round cells, EMA+, TTF-1+, CK-, S-100- and HMB45 -. The light microscopic morphology and IHC staining pattern support the diagnosis of sclerosing hemangioma (pneumocytoma).
The sclerosing hemangioma reflects 2 common histologic features of these lesions, sclerosis and ecstatic vascular spaces.Based on the available information, it is clear that the term sclerosing hemangioma is a misnomer. This tumor is considered an epithelial neoplasm. Sclerosing hemangioma of the lung is generally considered benign lesions, and surgical excision is curative without the need for additional treatment. Rare lesions demonstrate regional lymph node metastasis.
肿瘤切片上境界尚清,直径3cm,呈实性、硬化性、血管瘤样组织学形态。局灶可见泡沫状巨噬细胞。上皮样细胞似立方状,有点像II型肺泡上皮。小圆形细胞具有卵圆形的核,染色质弥散,核仁不明显,核分裂罕见。鉴别诊断应考虑到硬化性血管瘤(美国临床上有人建议称为pneumocytoma)、乳头状腺瘤、透明细胞肿瘤及类癌。免疫组化结果:上皮样肿瘤细胞EMA+, TTF-1+, CK+, S-100-, HMB45 -;圆形细胞EMA+, TTF-1+, CK-, S-100- , HMB45 -。光镜形态及免疫组化均支持硬化性血管瘤的诊断。
硬化性血管瘤具有两个组织学特征:硬化性及迷路样的脉管腔隙。根据现有知识,很明显,硬化性血管瘤的命名是错误的。该肿瘤被认为是上皮性肿瘤。肺的硬化性血管瘤一般认为是良性的,手术切除即可治愈而不需其他治疗。罕见的情况下具有局部淋巴结的转移。
以下为徐浩东老师的点评:
Sections of the relatively circumscribed 3.0 cm tumor show solid, sclerosing and angiomatoid histologic patterns of growth. Foci of foamy macrophages are present. Surface tumor cells are cuboidal and resemble reactive type II pneumocytes. Round cells are small with oval nuclei, disperse chromatin, inconspicuous nucleoli and rare mitotic figures. The differential diagnosis includes sclerosing hemangioma (pneumocytoma), papillary adenoma,clear cell tumorand carcinoid tumor. IHC staining results: surface tumor cells, EMA+, TTF-1+, CK+, S-100- and HMB45 -; round cells, EMA+, TTF-1+, CK-, S-100- and HMB45 -. The light microscopic morphology and IHC staining pattern support the diagnosis of sclerosing hemangioma (pneumocytoma).
The sclerosing hemangioma reflects 2 common histologic features of these lesions, sclerosis and ecstatic vascular spaces.Based on the available information, it is clear that the term sclerosing hemangioma is a misnomer. This tumor is considered an epithelial neoplasm. Sclerosing hemangioma of the lung is generally considered benign lesions, and surgical excision is curative without the need for additional treatment. Rare lesions demonstrate regional lymph node metastasis.
诊断:黏液表皮样癌。
1/可见中间细胞,表皮样细胞,偶见腔内含有黏液样分泌物及嗜酸性分泌物,巨噬细胞。
2、部分细胞为透明细胞,细胞大小一致透明或呈颗粒状,部分嗜酸性,核分裂不容易查见。
鉴别诊断:
1:肺透明细胞癌,2:肺腺泡细胞癌,PAS染色有助于诊断。3:肺透明细胞糖瘤:一般没有腺样腔隙形成。4:肺上皮-肌上皮癌:见上皮、肌上皮两种成分。5、排除转移。6、腺鳞状细胞癌透明变性。
免疫组化及特染:CK5/6,ck8,18;P63,TTF1,HMB45,S-100,PAS。