Salpingitis isthmica nodosa in female infertility and ectopic tubal pregnancy.

Salpingitis isthmica nodosa has been studied in relation to female infertility and tubal ectopic pregnancy. The incidence of this lesion in a control Caucasian population was 0.6%, as compared with incidences of 2.86% in an ectopic group and 50% in a small infertility group undergoing tuboplasty. It is suggested that salpingitis isthmica nodosa should be considered as an etiologic factor in these reproductive disorders. Chronic tubal spasm is suggested as the underlying process.