Research Article
Diagnosis and Prognosis of Retroperitoneal Liposarcoma: A Single Asian Center Cohort of 57 Cases
Table 1
Demographic and clinical characteristics of retroperitoneal LPS patients.
| Demographic characteristics n = 57 | Sex male/female | 26/31 | Age at diagnosis, mean (SD), years | 57.0 (12.2) | Duration of follow-up, mean (SD), years | 5.3 (2.6) |
| Clinical characteristics n = 57 | Location | Retroperitoneum | 57 (100%) | Pelvis invasion | 7 (12%) | Left retroperitoneum | 29 (51%) | Right retroperitoneum | 24 (42%) | Both retroperitoneums | 4 (7%) |
| Symptoms | WDLPS | 18 | Asymptomatic | 10 (56%) | Abdominal distension | 6 (33%) | Abdominal pain | 2 (11%) | DLPS | 23 | Abdominal pain | 11 (48%) | Asymptomatic | 9 (39%) | Abdominal distension | 5 (21%) | Lower extremity discomfort | 5 (21%) | Fever | 2 (9%) | Vomiting | 1 (4%) | Frequent micturition | 1 (4%) | PLPS | 4 | Asymptomatic | 3 (75%) | Abdominal pain | 1 (25%) | MLPS | 7 | Abdominal distension | 4 (57%) | Asymptomatic | 3 (43%) | Abdominal pain | 2 (29%) | Mixed LPS | 6 | Abdominal distension | 3 (50%) | Asymptomatic | 1 (17%) | Lower extremity discomfort | 1 (17%) | Dysuria | 1 (17%) | Overall | 57 | Asymptomatic | 25 (44%) | Abdominal distension | 18 (32%) | Abdominal pain | 16 (28%) | Lower extremity discomfort | 6 (11%) | Urinary system symptom | 2 (4%) |
| Physical signs | WDLPS | 18 | Absent | 9 (50%) | Tangible mass | 9 (50%) | DLPS | 23 | Absent | 7 (30%) | Tangible mass | 16 (70%) | PLPS | 4 | Tangible mass | 4 (100%) | MLPS | 7 | Absent | 2 (29%) | Tangible mass | 5 (71%) | Mixed LPS | 5 | Tangible mass | 5 (100%) | Overall | 57 | Absent | 18 (32%) | Tangible mass | 39 (68%) |
| Characteristics of retroperitoneal mass | WDLPS | 9 | Clear border | 8 (89%) | Good mobility | 3 (33%) | Tenderness pain | 2 (22%) | DLPS | 16 | Clear border | 9 (56%) | Good mobility | 3 (19%) | Tenderness pain | 8 (50%) | PLPS | 4 | Clear border | 4 (100%) | Good mobility | 1 (25%) | Tenderness pain | 1 (25%) | MLPS | 5 | Clear border | 5 (100%) | Good mobility | 2 (40%) | Tenderness pain | 2 (40%) | Mixed LPS | 5 | Clear border | 3 (60%) | Good mobility | 1 (20%) | Tenderness pain | 1 (20%) | Overall | 39 | Clear border | 29 (74%) | Good mobility | 10 (26%) | Tenderness pain | 14 (36%) |
| Imaging methods | B ultrasound | 9/11 (82%) | CT scan | 9/11 (82%) | MRI | 2/11 (18%) |
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MLS: myxoid liposarcoma; CT: computed tomography; MRI: magnetic resonance imaging; CM: centimeter; SD: standard deviation.
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