1. The pituitary infundibulum is either absent or truncated.

2. Postovulatory, reaction units increase in ampulla and infundibulum compared with the proliferative phase.

3. The Ampulla connects with the infundibulum, which rests above the ovaries, and ends at the distal tubal opening (or abdominal ostium) into the abdominal cavity where, in ovulation, the oocyte enters the Fallopian tube

4. In the 2nd half of the cycle, during pregnancy, during antiovulatory treatment and in postmenopausal period, the endosalpingeal epithelium of pars of uterina, isthmus, ampulla and infundibulum is characterized by proliferative quiescence (i.e. lack of mitoses, a small quantity of nuclei, a simple epithelium).

5. Results: The cystic duct stump was the most common site of leakage (n=8), 1 patient revealed a leakage from the gallbladder remnant after incomplete excision of the gallbladder infundibulum, 2 leaks originated from an aberrant bile duct, 1 from the liver bed and in 1 patient a common bile duct injury was found, whereas the etiology of the leak remained unknown in 1 patient.