Table 2.

Table 2 shows the non-contrast CT findings stratified by result. It is important to note that many patients had pleural effusions and pulmonary nodules. Of the 90 total patients, 30 had pleural effusions and 50 had pulmonary nodules. A large percentage of patient’s with these findings were read correctly as a negative CT without evidence of recurrence (22 pleural effusions and 37 pulmonary nodules). Additionally, few extrathoracic masses were identified. No extrathoracic masses were identified in the false negative CT reads (missed recurrences).

	Adenopathy	Pleural Effusion	Pleural Mass	Pulmonary Nodule	Extrathoracic Mass
True positive CT	5	4	3	7	2
False negative CT	0	3	0	3	0
False positive CT	2	1	0	3	0
True negative CT	2	22	3	37	2
Total CT	9	30	6	50	4