回転有棘針による穿刺細胞診法

抄録

Recently, the fine needle aspiration biopsy (ordinary method) has been generally used for the cytologic diagnosis of tumors in various organs. However, the amount of specimens taken by the fine needle aspiration biopsy is occasionally not big enough for the cytologically correct diagnosis. For the improvement of this problem, the puncture cytology of an electrically rotative thorn needle (the new method) was devised and applied to various tumors. The results of cytodiagnosis using the new method were evaluated and discussed as follows. Instruments for the new method consist of a disposable rotative thorn needle (0.64mm in diameter) with its guide needle (1.0mm in outer diameter) and a handy motor.
Following cell collection with the thorn needle, aspiration using the guide needle was done and the combined results of these two procedures were taken as the results of the new method. The results by the new method were compared with those by the ordinary one concerning the cytologic findings and the number of collected cells.
During the period from 1977 to 1979, 30 mice with implanted tumor and 52 operatively removed tumors and 36 biopsied tumors in dlinical patients were studied. The new method resulted in finer cytologic findings and a larger number of collected cells than did the ordinary method. Especially for solid tumors with hard consistency and of a fibrotic nature, the new method was significantly superior to the ordinary one in the number of collected cells.
No complications were experienced in application of the new method to clinical patients. It can be concluded that this new method has good indication for the cytologic diagnosis of the solid tumor with hard consistency and of a fibrotic nature, which is impossible to diagnose correctly by the ordinary fine needle aspiration biopsy because of the small amount of specimens it gives.