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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