临床检验基础-脱落细胞学检查

临床检验基础脱落细胞学检查上海第二医科大学附属瑞金医院袁 勤痰液脱落细胞学检查 肺脱落细胞学检查是早期诊断肺癌的重要手段之一。肺癌的早期诊断可根据临床症状、 X线检查、痰液涂片检查和纤维支气管等多方面配合进行。 痰液标本采集： 痰液必须新鲜； 痰液必须是肺部咳出。痰液脱落细胞学检查正常的痰涂片中可见来自口腔的鳞状上皮细胞、纤毛柱状上皮细胞和肺泡吞噬细胞（后两者为确定痰液来自肺及支气管深部的标志）以及中性白细胞、淋巴细胞、浆细胞、嗜酸性白细胞等。痰液纤毛柱状上皮细胞Ciliated columnar cells纤毛柱状上皮细胞Ciliated columnar cells Note the moderately coarse and hyperchromatic chromatin Also note the little tails where the cells were attached to the basement membrane and, of course, the presence of terminal bars and cilia (Oil) Goblet cells Goblet cell hyperplasia Normally, the ciliated cells far outnumber the secretory cells (by at least 5 to 1). However, in asthma, for example, the goblet cells may actually outnumber the ciliated cells. 痰液肺泡吞噬细胞Alveolar macrophages in sputum Alveolar macrophages are key cells to look for in a sputum specimen. The presence of alveolar macrophages indicates that the “deep lung“ has been sampled. “dust cells“痰液肺泡吞噬细胞Alveolar macrophages in sputumGiant Cell Histiocytes Giant cell histiocytes can be seen in a wide variety of pulmonary disorders, They can also be seen in apparently healthy people, and therefore do not necessarily indicate the presence of disease. 痰液良性病变脱落细胞 炎症病变脱落细胞：支气管炎、肺炎和肺结核等急、慢性呼吸道炎症引起上皮细胞发生细胞核轻度固缩退变或细胞轻度肿大。 巴氏细胞（ Papaniculaou cell): 因炎症刺激造成，细胞体积较小，圆形或卵圆形，胞质深红色，核小而圆形，致密深染，有轻度核异形 ,可能是鳞状化生细胞。痰液良性病变脱落细胞巴氏细胞 Squamous metaplasia can be seen in sputm smear, ie, rounded cells with dense, cyanophilic cytoplasm. 肺癌脱落细胞 痰液涂片检查主要用于检查癌细胞，肺癌患者痰内癌细胞检出率可达 90%。根据细胞学形态，肺癌主要分为鳞癌，腺癌，未分化癌，混合型癌及类型未明癌。痰液脱落细胞学检查肺鳞状细胞癌： 最常见，男性远多于女性，主要发生于大支气管，多数为中央型。 细胞形态和大小异常：癌细胞单个散在，多形性明显，可以呈圆形、蝌蚪形、梭形及不规则形； 核的异型：癌细胞大而畸形，核染色质丰富深染，成团块状或墨水滴样。核仁常不明显； 胞质的异常：癌细胞胞浆丰富红染，有角化倾向； 癌细胞吞噬现象痰液鳞状细胞癌Keratinizing squamous cell carcinoma (tissue) Note the presence of squamous eddies, or pearls, which are pathognomonic of keratinization. 痰液鳞状细胞癌Keratinizing squamous cell carcinoma Pearls are characteristic of keratinizing lesions. 角化鳞状细胞癌Keratinizing squamous cell carcinoma Bizarre keratinizing cells, often single, are a characteristic feature. Such cells are particularly associated with sputum specimens 痰液鳞状细胞癌痰液鳞状细胞癌非角化鳞状细胞癌Non-keratinizing squamous cell carcinoma The groups of malignant cells tend to be more cohesive and the cells more uniform Pearls, extensive keratinization, and bizarre-shaped cells are not present. 痰液脱落细胞学检查肺腺癌： 常发生于小支气管，以周围型肺癌多见，易发生血道转移和侵犯胸膜引起的癌性胸水。 分化好的腺癌以成群脱落为主，细胞群大，且细胞相互重叠呈立体结构，单个癌细胞一般为圆形或卵圆形，胞质常有许多小空泡，偶见较大空泡。核圆形或卵圆形，核膜染色质呈颗粒状，有明显的核仁。肺腺癌 Adenocarcinoma Adenocarcinoma Three-dimensional cell balls or papillary clusters of malignant cells are characteristic architectural features of adenocarcinoma. 肺腺癌 Adenocarcinoma Microacinar or rosette-like structures indicate glandular differentiation. Microacinar complexes are a cytologic equivalent of the “gland-in-gland“ histologic growth pattern of adenocarcinoma. 肺腺癌 Adenocarcinoma肺腺癌 Adenocarcinoma Note that intracytoplasmic secretory vacuole containing mucin (arrow). 痰液脱落细胞学检查未分化小细胞癌： 恶性度较高，多为中央型，较早发生转移。 癌细胞单个或成团脱落， 胞体小，比淋巴细胞稍大，常为不规则的圆形或卵圆形，胞浆少，呈裸核样；细胞核相互挤压呈镶嵌状结构。 未分化小细胞癌 Small cell carcinoma Small cell carcinoma (brushing specimen) The tumor cells have very little cytoplasm, relatively fine but very hyperchromatic chromatin, and inconspicuous nucleoli Note the similarity of bronchial cell nuclear chromatin to that of the tumor cells. 未分化小细胞癌Small cell carcinoma Small cell carcinoma (brushing specimen) The cells obtained by direct brushing appear “fresher.“ well-preserved material未分化小细胞癌Small cell carcinoma浆膜腔积液脱落细胞学检查 浆膜腔，又称体腔，包括胸膜腔、腹膜腔和心包膜腔。在正常生理情况下，体腔脏层和壁层间有少量液体