S. Kivity et al., DIAGNOSTIC-VALUE OF LATE CUTANEOUS RESPONSE TO CASONI TEST IN PATIENTS OPERATED FOR ECHINOCOCCUS CYST, Annals of allergy, 71(3), 1993, pp. 247-250
Thirty-eight patients with confirmed Echinococcus cysts were evaluated
postoperatively. RAST as well as early and late skin responses to Ech
inococcus antigen were assessed. Early skin responses were positive in
most of the patients even 10 years or more postoperation. Late skin r
esponses were positive in 42% of the patients, and the younger the pat
ient, the greater the likelihood of occurrence. In patients who had la
te skin responses, the reactions were similar at 4 to 8 and 24 hours f
ollowing the antigen. These results suggest that late skin responses s
een at 24 hours are part of the immediate hypersensitivity reaction to
the antigen.