Desmoid tumors (DTs) are rare tumors classified as deep fibromatoses taking origin from fascial or musculoaponeurotic structures. With pregnancy and surgical scars considered in the etiology, most anterior abdominal wall DTs occur in women in their reproductive years, especially during a pregnancy or post-partum. Herein, we present development of DT in a female patient in the post-partum period following cesarean delivery, which manifested itself with a growing mass in anterior abdominal wall. In our case, possibility of hematoma most probably located beneath the fascia was considered initially as a complication of cesarean section based on ultrasonographic examination and location of the lesion, while upon lack of either spontaneous regression with eventual diminish in size or resolve of symptoms within six weeks, further investigation via MRI and tru-cut biopsy revealed the diagnosis of abdominal DT. Radical tumor extirpation with resection of an adequate margin of surrounding normal tissue was applied, and the post-operative period was uneventful.