Inflammatory Pseudotumor of the Anal Sphincter Complex: A Case Report.
10.3348/jkrs.1999.40.4.733
- Author:
Sang Hoon LEE
1
;
So Lyung JUNG
;
Myeong Im AHN
;
Jee Young KIM
;
Young Ha PARK
Author Information
1. Department of Diagnostic Radiology, St. Vincent Hospital, The Catholic University of Korea.
- Publication Type:Case Report
- Keywords:
Anus, abnormalities;
Anus, US;
Magnetic resonance(MR), intracavitary coils
- MeSH:
Anal Canal*;
Diagnosis;
Gadolinium;
Granuloma, Plasma Cell*;
Humans;
Magnetic Resonance Imaging;
Myofibroblasts;
Ultrasonography
- From:Journal of the Korean Radiological Society
1999;40(4):733-735
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
We describe a case of inflammatory pseudotumor involving the anal sphincter complex, and its ultrasonographyand MR imaging features. Transperineal ultrasonography showed a well-marginated ovoid low echoic lesionintermingled with sparse echogenic foci within the right anal sphincter complex. The lesion was of intermediatesignal intensity on T1-weighted images and of heterogeneous hyperintensity on T2-weighted, compared tosurrounding muscle. After the infusion of gadolinium, the le-sion showed heterogeneous enhancement, with amultifocal non-enhanced center. T 2 - weighted endorectal MR images were more accurate in depicting the lesion andanal sphincter complex, and the patient underwent surgical resection. The final histo-logic diagnosis wasinflammatory myofibroblastic tumor.
