Preoperative axillary lymph node staging by ultrasound-guided cytology using a four-level sonographic score

BMC Medical Imaging

Table 3 Statistical peformance

	Sensibility (%)	Specificity (%)	PPV (%)	NPV (%)
Echography*	68.4	94.1	86.7	84
Cytoblock	58.8	100	100	82.1
Echography* + Cytoblock	75.0	94.1	88.2	86.5

^* Echography N and + considered as non suspicious; echography ++ and +++ considered as suspicious

ISSN: 1471-2342