Fig.1: Sagittal US image of the pelvis of a 13-year-old girl presenting with acute pelvic pain shows multiple cystic lesions (arrows) behind the uterus (U). These cystic structures have peculiar frondlike structures internally suggesting that they represent a dilated fallopian tube.
Fig. 2: Sagittal T2W MR image confirms the presence of dilated fallopian tube with fluid-fluid levels, suggesting hematosalpinx.
- Tubal pregnancy (most common)
- Fallopian tube cancer
- Obstructed vagina resulting in menstrual blood backflow into fallopian tubes
- Very rare entity causing lower abdominal pain
- Usually occurs in reproductive age
- Diagnosis rarely made preoperatively
- Imaging findings are adnexal cystic mass, hydrosalpinx, hematosalpinx
- Twisted fallopian tube, if visualized, is a specific sign for tubal torsion. If the ovary is also torsed, the ipsilateral ovary becomes enlarged.