Pregnancy-related desmoid neoplasia originating in the rectus abdominis muscle: Case report

Abstract

Desmoid tumor (DT) is a rare mesenchymal neoplasm characterized by infiltrative and invasive growth with a tendency to recur. These tumors are locally aggressive and intermediate in behavior, with an incidence of two to five cases per million population. A 27-year-old female patient presented with an abdominal mass that appeared in the second month of pregnancy and continued to grow after delivery. Physical examination revealed a firm, non-tender tumor in the mesogastric region. Computed tomography (CT) showed a mass in the abdominal wall and ruled out lipoma. After surgery, the lesion was confirmed to be a DT measuring 17 × 11 × 8.5 cm. Follow-up over two years was satisfactory. This case was notable for the exceptional size of the excised tumor and confirmed the usefulness of CT in abdominal DTs. Due to the lack of a single treatment protocol, a multidisciplinary approach involving the patient is essential.