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Rectus abdominis desmoid tumor

Case contributed by Dr Michael P Hartung

Presentation

Palpable abdominal wall mass.

Patient Data

Age: 30 years
Gender: Female
MRI

Small enhancing mass in the left rectus abdominis muscle with slightly irregular borders. 

Ultrasound

Ultrasound

1.5 x 0.8 cm oval lobulated hypoechoic and slightly vascular mass in the left rectus abdominis muscle. 

Case Discussion

Rectus abdominis desmoid tumor confirmed by ultrasound-guided biopsy. Histochemical stains were positive for smooth muscle actin and beta-catenin, and negative for AE1/AE3, S100, desmin, and CD34. 

There is an important association of abdominal wall desmoid tumors and pregnancy, and this young woman noticed this mass about one year after cessation of breastfeeding. This was surgically excised. 

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Case information

rID: 75332
Published: 25th Mar 2020
Last edited: 26th Mar 2020
Inclusion in quiz mode: Included

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