Razi Journal of Medical Sciences

 Isolated torsion of fallopian tube is an unusual event during pregnancy. Predisposing factors for torsion are hydrosalpinx, prior tubal operation, ovarian and paraovarian masses, although there maybe no obvious cause. Patient present with lower quadrant pain and diagnosis is usually made during operation for acute abdomen and salpingectomy is almost always necessary. In this report, a 24-week pregnant woman, with chief complaint of lower abdominal and right flank pain is presented, who had been treated with impresion of pyelonephritis and ureteral stone. Finally, due to lack of improvement, an explorating laparatomy was done with daignosis of acute abdomen and isolated torsion of right fallopian tube with no predisposing factor was found.

  This rare case is presented to emphasize its importance in differential diagnosis of acute abdomen during pregnancy.