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Abdominal wall desmoid mimicking intra-abdominal mass: MR features
T Ichikawa1, A Koyama, H Fujimoto
1Department of Radiology, Yamanashi Medical College, Japan.
Magnetic Resonance Imaging
|January 1, 1994
Summary
This case highlights an unusual abdominal wall desmoid tumor that mimicked an intra-abdominal mass. Magnetic resonance imaging (MRI) proved valuable in identifying its origin from the rectus abdominis muscle.
Area of Science:
- Radiology
- Oncology
- Surgical Pathology
Background:
- Desmoid tumors, though benign, can exhibit aggressive local growth.
- Abdominal wall tumors can present diagnostic challenges, often mimicking intra-abdominal pathologies.
Observation:
- A desmoid tumor originating from the abdominal wall enlarged towards the liver.
- T2-weighted MRI revealed clear continuity between the mass and the rectus abdominis muscle.
- The tumor's signal characteristics and attachment were atypical for a desmoid.
Findings:
- MRI demonstrated the abdominal desmoid's origin from the rectus abdominis muscle.
- The imaging findings suggested MRI's superiority over CT in delineating the origin of right-upper-quadrant masses.
- Despite imaging, the unusual features of this desmoid led to a misdiagnosis.
Implications:
- This case underscores the importance of considering desmoid tumors in the differential diagnosis of abdominal masses.
- Advanced MRI techniques can aid in accurately localizing the origin of complex abdominal wall tumors.
- Unusual presentations of desmoid tumors necessitate careful radiological assessment and histopathological correlation.