title: [Primary retroperitoneal tumor].
abstract: 60 patients with primary retroperitoneal tumor were reported. Among them, 26 cases were benign and 34 malignant. Abdominal mass was the most frequent presenting symptom (58.3%). The next was abdominal pain. The clinical course varied from 1 day to 22 years. Malignancy was predominant in patients with history less than one year. The size of tumor varied from 3 X 3 X 3 cm to 34 X 24 X 11 cm. Malignancy was more frequent in tumors larger than 10 cm in diameter. The location is decided mainly by displacement and compression of the gastrointestinal tract in barium meal examination and displacement or compression of the kidney or ureter and the presence of hydronephrosis in intravenous pyelography. The final diagnosis can only be established by pathological examination on celiotomy. All 60 patients were operated and the lesion of 43 was resectable. In the 20 with malignant tumor resected, only 8 patients are alive, while all the 26 patients with benign tumor are surviving, though 3 of them had unremovable lesions. The treatment is to resect the tumor as thorough as possible, including the adjacent invaded organs. Recurrence is likely for which resection should be reconsidered if possible. Radiotherapy or chemotherapy should be given to patients with lymphosarcoma, unremovable tumors and residual lesions after resection.
mesh_terms: D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis* / Q000601:surgery; D008637:Mesenchymoma / Q000175:diagnosis* / Q000601:surgery; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000601:surgery