J Korean Radiol Soc.  1999 Mar;40(3):543-547. 10.3348/jkrs.1999.40.3.543.

CT Findings in Differential Diagnosis of Pelvic Inflammatory Bowel Mass and Tuboovarian Abscess

• Park SH
• Jeon DS
• Choi JO
• Chae SH
• Lee KS
• Kim SM
• Kim HS

• KMID: 2201044
• DOI: http://doi.org/10.3348/jkrs.1999.40.3.543

Abstract

PURPOSE: To evaluate the CT findings which may help differentiate pelvic inflammatory bowel mass(IBM) fromtubo-ovarian abscess(TOA).
MATERIALS AND METHODS
Twenty-five patients with histologically confirmed TOA(n=14),periappendiceal abscess(n=9), an abscess caused by diverticulitis(n=1), and by ulcerative colitis(n=1) wereevaluated. For TOA, age distribution ranged only from the 3rd to the 5th decade, but for IBM, the range was the 2nd to 8th decade with highest frequency during the 3rd-4th decade. CT findings were retrospectively analysed forbilaterality, internal septa, anterior displacement of the mesosalpinx, and perirectal and mesenteric fat.
RESULTS
Mesenteric fat infiltration was detected in all 11 cases of pelvic IBM, but in only two of 14 TOA cases(p<0.05).Anterior displacement of the mesosalpinx was observed in two of 11 pelvic IBM cases and in nine of 14 TOAcases(P<0.05). There were no significant difference in bilaterality, internal septa, or perirectal fatinfiltration.
CONCLUSION
Mesenteric fat infiltration was the most reliable finding in differentiating pelvic IBMform TOA. Anterior displacement of the mesosalpinx, and age distribution were also helpful in differentiating thetwo disease groups.

Keyword

Pelvic organs; CT; Pelvic organs, abscesses; Ovary, CT; Ovary, abscesses

MeSH Terms

Abscess*
Age Distribution
Diagnosis, Differential*
Humans
Retrospective Studies
Ulcer