In a few cases there exists an abnormal anastomosis between the external iliac and the obturator vessels
called the corona mortis4,10,14.
Retro-pubic vascular anomalies: A study of abnormal obturator vessels
The distal extent of the lymph node packet is divided, retracted cranially, and bluntly separated from the obturator vessels
It is nicknamed "little old lady's hernia" as it affects this group due to atrophy and loss of preperitoneal fat around obturator vessels
in obturator canal predisposing to obturator hernia.
Branches of the obturator vessels
and of the deep femoral artery of thigh were dissected out.
On the other hand, major bleeding from the iliac or obturator vessels
requires immediate resuscitation and open intervention intraoperatively, with immediate postoperative arterial embolization under radiographic control.
Lau & Lee justify the presence of the AOA, stating that the occlusion of the obturator artery secondary to any cause, such as atherosclerosis or deep vein thrombosis, can lead to the development of collateral circulation and the subsequent formation of aberrant obturator vessels
. However, as stated by Darmanis et al., last theory seems to ignore the probably obvious finding that the occluded vessels and their branches would still be present, although as fibrous bands, which are not evident in this case.