Chronic ectopic pregnancy is an uncommon form of tubal pregnancy manif
ested as a pelvic mass with minimal symptoms and a low or absent titer
of human chorionic gonadotropin. For this reason, most of the reporte
d cases have been diagnosed only after explorative laparotomy. The val
ue of Doppler ultrasonography for preoperative diagnosis of this entit
y has not yet been established. We report on a 36-year-old patient who
was admitted for intermittent right lower quadrant abdominal pain of
3 months' duration, and a right adnexal mass found on pelvic examinati
on. On Doppler ultrasonography, a right complex adnexal mass was demon
strated, characterized by extensive external vascularization, aberrant
vessels and arteriovenous shunting, but with no internal blood flow.
Explorative laparotomy revealed a right tubal mass adherent to the ome
ntum, and covered by numerous enlarged and tortuous blood vessels orig
inating in the omentum. Pathological examination of the mass revealed
a chronic ectopic pregnancy. The possible contribution of Doppler-spec
ific characteristics for the diagnosis of chronic ectopic pregnancy is
described and discussed.