[Preoperative localized diagnosis of insulinoma by aterial stimulating and venous sampling methods].
OBJECTIVE
To establish a method for bocative diagnoses of insulinoma,


METHODS
Five patients with insulinoma were given locative diagnoses by using ASVS methods which mean injecting calcium stimulatant into pancreatic supplying arteries and then taking blood specimens from henatic vein to gauge the insulin levels. Six samples, each 2 ml, were taken before and 30, 60, 90, 120, 180 seconds after the injection.


RESULTS
If the peak of blood-insulin level was twice or higher than the basic level, the tumor was located in the domain. These results were confirmed operatively in all the five cases.


CONCLUSIONS
ASVS is an accurate technique to localize insulinoma.
Zhao
P
P
Peking Union Medical Colledge Hospital, Beijing.
Jin
Z
Z
Hu
M
M
D000328:Adult; D001158:Arteries; D002118:Calcium / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007269:Injections, Intra-Arterial; D007328:Insulin / Q000097:blood*; D007340:Insulinoma / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000098:blood supply; D010190:Pancreatic Neoplasms / Q000175:diagnosis*
D007328:Insulin; D002118:Calcium