Research Article

Pleural Fluid Mesothelin as an Adjunct to the Diagnosis of Pleural Malignant Mesothelioma

Table 1

Final diagnosis, patient characteristics, and mesothelin results.

Final diagnosisFemale,
(%)
Age,
mean (range)
Mesothelin1,2
nM
Mesothelin positive3
(%)

MM18326 (14%)71 (45–97)28 ± 4.3122 (67%)
Non-MM malignancy all436226 (52%)70 (24–97)4.7 ± 3.9***50 (11%)
 Lung cancer18278 (43%)72 (36–97)5.2 ± 3.626 (14%)
 Breast cancer6261 (98%)66 (37–96)4.1 ± 3.33 (5%)
 Ovarian cancer1111 (100%)64 (42–77)19 ± 5.15 (45%)
 Pancreatic cancer102 (20%)68 (56–77)6.3 ± 8.43 (30%)
 Other malignancies17174 (44%)68 (24–94)3.9 ± 413 (8%)
Nonmalignant all712260 (37%)69 (18–99)3.2 ± 3***3 (0.4%)
 Transudate14158 (41%)74 (34–99)3.4 ± 2.70 (0%)
 Exudate12944 (34%)67 (19–94)3.4 ± 3.52 (2%)
 Infection16558 (35%)65 (29–96)2.3 ± 3.81 (0.6%)
 Benign—not specified277106 (38%)70 (18–96)3.5 ± 3.10 (0%)

expontiated mean of log transformed data plus/minus standard error of log transformed data * 100, in the most recent sample received per patient.
2significant difference between indicated cohorts and the mesothelioma cohort as a whole () as determined by Student’s -test (***is ).
3Number of individuals in whom soluble mesothelin was >20 nM in the most recent sample received per patient.