Calcifying fibrous tumor in the abdomen: A case report

Introduction. Calcifying fibrous tumor is a rare benign neoplasm of soft tissue origin. The tumor is commonly found in young adults. In most cases it is an incidental finding, because patients do not have obvious symptoms. This tumor may appear in different anatomical locations mimicking other stromal lesions. The diagnosis is made based on pathohistological characteristics and an appropriate immunohistochemical profile. The treatment is surgical, and the prognosis is good. Case Report. A 19-year-old female patient was admitted for abdominal surgery presenting with abdominal pain and pressure. Abdominal ultrasonography and multislice computed tomography of the abdomen showed a tumor mass in the right hemiabdomen. The patient underwent surgical treatment and the tumor was completely removed. Macroscopic analysis showed that the tumor was encapsulated and had a smooth surface. Microscopically, the tumor consisted of bundles of partially hyalinized collagen fibers with calcifications in the form of psammoma bodies that were permeated with mononuclear inflammatory infiltrates. Conclusion. Given the higher incidence of other mesenchymal tumors in the abdomen, due to its rare occurrence, calcifying fibrous tumor presents a diagnostic challenge.