内窥镜取活检组织块多而体积小,由于包埋定向问题和切面关系,在切片中可能看不到癌肿。癌肿细胞的聚合力差,有一些癌肿细胞会脱落在固定液中。如切片中未发现癌肿,将固定液作离心沉淀后涂片检查,有时在固定液沉淀中发现有明确的癌细胞,从而明确了诊断。我科自1979～1986年做了220例检查,现小结如下。 Endoscopic biopsy to take more tissue and small size, due to the orientation of the embedding and faceted section, the slice may not see the cancer. Poorly aggregated cancer cells, some cancerous cells will fall off in the fixative. If no cancer was found in the section, the fixed solution was centrifuged and smear examination was carried out. In some cases, definite cancer cells were found in the sedimentation of the fixative solution, thereby confirming the diagnosis. My department from 1979 to 1986 made 220 checks, are summarized as follows.