Table 2. Sensitivity and specificity for metastatic lymph node detection in a published ultrasound study.

Study	Year	No. of patients	Transducer type, frequency (MHZ)	Criteria for positive LN	Interpreter(s)	Reference standard	LN number	SN (%)	SP (%)
Saphn et al. (16)	2001	60	Convex probe, 3.5	–	One urologist	HP report	–	100	–

LN, lymph node; SN, sensitivity; SP, specificity; HP, histopathology.