Abstract
A 63-year-old woman had been suffering from right hip pain for 15 years. She was diagnosed as osteoarthritis of the right hip three years ago. She had noticed pain, swelling of the right lower extremity and a right inguinal mass for two months. When she visited our hospital, the mass in her right groin was palpable and the right lower extremity was remarkably swollen. The mass was elastic, hard, smooth and immobile. She didn't show any infectious symptoms. Erythrocyte sedimentation rate was 20mm/1h and other blood tests were within normal range. Plain radiographs revealed dysplasia of the bilateral hips and moderate degenerative arthritis of the right hip. MRI revealed a 4.0 × 4.0 cm well-defined mass in isointensity on T1, high intensity on T2 anterior and medial to the hip joint and represented the mass that communicated with the right hip, suggesting iliopsoas bursitis. CT revealed a mass that was enhanced slightly with the displacement of femoral vessels medially.
Iliopsoas bursitis was diagnosed and she was treated conservatively. Due to granual aggravation of symptoms, needle biopsy was performed to determine malignancy of the tumor two months later. Pathologically no malignancy was confirmed and the mass was resected surgically. The pathological diagnosis of iliopsoas bursitis was made. After the surgery, clinical symptoms improved remarkably.
