[Is the carbohydrate antigen Ca 19.9 useful in the diagnosis of pancreatic carcinoma?].
OBJECTIVE
To determine the sensitivity and specificity of the tumor marker Ca 19.9 in subjects with suspected pancreatic cancer.


METHODS
Levels of Ca 19.9 antigen were measured by enzymeimmunoassay during a 3 year period to 72 patients investigated for suspected pancreatic cancer.


RESULTS
A threshold of 100 U/ml resulted in sensitivity of 94.7%, specificity of 39.6%, positive predictive value of 36% and negative predictive value of 95.4%.


CONCLUSIONS
Levels of Ca 19.9 antigen > 100 U/ml are suggestive of malignancy in patients investigated for suspected pancreatic cancer.
Servicio de Medicina Digestiva, Hospital La Princesa, Universidad Autónoma de Madrid.
C
C
Santander
I
I
Jiménez
E
E
Martín
A
A
Melón
J M
JM
Pajares
D018395:CA-19-9 Antigen / Q000097:blood*; D006801:Humans; D010190:Pancreatic Neoplasms / Q000097:blood / Q000175:diagnosis*; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D012680:Sensitivity and Specificity
D018395:CA-19-9 Antigen
Es útil el antígeno carbohidratado Ca 19.9 en el diagnóstico de carcinoma pancreático?