| Number of cases# | Reason of using additional needles |
---|---|---|
PC20 | 5 (4.5%; 5/111) | The needle got distorted and the stylet could not be inserted: 2 cases Insufficient specimens: 3 cases |
PC22 | 7 (10.3%; 7/68) | Insufficient specimens: 7 cases |
AC22 | 2 (16.7%; 2/12) | Insufficient specimens: 2 cases |