To study the imaging findings of chronic salpingitis, improve the diagnostic ability of hysterosalpingography (HSG) for tubal infertility, and provide guidance for patients with tubal pregnancy to prepare for pregnancy again.

The data of 58 patients with previous tubal pregnancy in our hospital from January 2018 to August 2019 were retrospectively analyzed, including 115 fallopian tubes, of which 64 were tubal pregnancy. HSG was performed within 3-7 days after menstruation to observe the tubal patency, morphological changes and whether there was contrast agent retention in the fallopian tube during the extended period, and the effect of the duration of the disease on the positive detection rate was compared.

In terms of tubal patency, there were 7 fallopian tubes with hydrosalpinx, 57 tubes remained unobstructed; there were 21 tubes with retrograde peristalsis dysfunctions; the morphological abnormalities of fallopian tubes included ampulla tortuosity, lumen dilatation or stenosis, deformation or diverticulum formation, 26 fallopian tubeshad no morphological abnormalities. There was no significant difference in the positive detection rate between the two groups in the course of disease less than 12 months and more than 12 months (χ² = 0.123, P > 0.500).

Chronic salpingitis is the main cause of tubal pregnancy and tubal infertility. HSG should focus on tubal patency, tubal morphology and peristaltic function. After tubal pregnancy, the pathological basis may have been formed in a short time, and will not change significantly with the extension of time. It is suggested that HSG should be carried out as soon as possible if there is a need for reproduction after tubal pregnancy, to avoid prolonging the pregnancy preparation time.