Retroperitoneal benign solitary fibrous tumour: Case report

Abstract

Introduction: Primary retroperitoneal tumours are rare (0.05-0.2% of all tumours). Solitary fibrous tumour accounts for 0.03% of all neoplasms and 3.0% of all soft tissue tumours. Retroperitoneal solitary fibrous tumour occurs infrequently and is often recidivous. Between 1990 and 2010, 57 cases were reported in literature. Case report: A 56 year old female presented with abdominal dull pain and palpable mass in the left lower quadrant. The laboratory studies including tumour markers and colonoscopy were negative. Imaging abdominal ultrasound and MSCT scan showed a large solid tumour located in the retroperitoneum compressing the left colon and the small bowel. A laparotomy was performed and the tumour was excised in total. The excised tumour was an encapsulated, elastic and hard, 160x120x80mm in size, 580 g in weight. Histopathological and immunohistochemical examinations disclosed a benign solitary fibrous tumour. Postoperative evolution of the patient was uneventful and she was discharged from hospital 6 days after the surgical procedure. Conclusion: Surgical treatment is the gold standard in the treatment of these tumours. Because of the tendency to recur, it is necessary to have long-term monitoring and examination of these patients.