Desmoid tumors are benign tumors of fibrous tissue origin most commonly seen in the anterior abdominal wall. They are more frequent in young women as in this case. They have a tendency to recur locally and the treatment is adequate resection. Overly aggressive resection on the other hand, can lead to unwarranted injury to the patient. The tumor depicted here arose in a typical fashion from the posterior rectus sheath on the right and was discovered because of symptoms of abdominal pain.
A lower abdominal CT cut shows the tumor arising from the back of the right rectus sheath and splaying the right rectus muscle above it. The mass of the tumor fills the lower abdomen and pelvis and displaces the bladder and uterus posteriorly.
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