Citation, DOI and article data
Pyosalpinx refers to a Fallopian tube that is filled, and often distended, with pus.
A pyosalpinx often tends to be a complication of background pelvic inflammatory disease (PID). Inflammation results in tubal and peritubal adhesions with superimposed obstruction of the fimbrial end. Pyosalpinx can be a component of a tubo-ovarian abscess. Being unable to drain, the fallopian tube distends with pus, resulting in a pyosalpinx.
A pyosalpinx may be seen as a thickened fallopian tube and may or may not be associated with debris. The Fallopian tube may be distended.
- dilated serpentine/tubular structure in the pelvis
- low-level echoes due to the higher protein content of the debris within the tube distinguish a pyosalpinx from a hydrosalpinx 4,6
Morphological appearances of a pyosalpinx can sometimes be indistinct from simple uncomplicated tubal dilatation (hydrosalpinx) 1. As opposed to a simple hydrosalpinx, in pyosalpinx the tube wall may appear thickened 3 and have hyperenhancing tubal walls with surrounding inflammation.
Signal characteristics within the tubular lumen have been described as 5
- T1: variable due to varying protein content
- T2: often hyperintense, with characteristic amorphous shading
- T1 C+ (Gd): thick rim enhancement
- DWI/ADC: restricted diffusion in the fallopian tube
- 1. Hamm B, Krestin G, Laniado M et-al. MR Imaging of the Abdomen and Pelvis. Thieme Medical Pub. (2009) ISBN:3131455918. Read it at Google Books - Find it at Amazon
- 2. Skucas J. Advanced imaging of the abdomen. Springer Verlag. (2006) ISBN:1852339926. Read it at Google Books - Find it at Amazon
- 3. Tukeva TA, Aronen HJ, Karjalainen PT et-al. MR imaging in pelvic inflammatory disease: comparison with laparoscopy and US. Radiology. 1999;210 (1): 209-16. Radiology (full text) - Pubmed citation
- 4. Williams PL, Laifer-narin SL, Ragavendra N. US of abnormal uterine bleeding. Radiographics. 23 (3): 703-18. doi:10.1148/rg.233025150 - Pubmed citation
- 5. Rezvani M, Shaaban AM. Fallopian tube disease in the nonpregnant patient. Radiographics. 31 (2): 527-48. doi:10.1148/rg.312105090 - Pubmed citation
- 6. Benjaminov O, Atri M. Sonography of the abnormal fallopian tube. AJR Am J Roentgenol. 2004;183 (3): 737-42. AJR Am J Roentgenol (full text) - Pubmed citation
- 7. Semelka RC. Abdominal-Pelvic MRI. Wiley-Blackwell. (2010) ISBN:0470487755. Read it at Google Books - Find it at Amazon