Key result
R0 resection is linked to better prognosis in retroperitoneal liposarcoma.
Why the study?
Retroperitoneal liposarcoma is seldom reported and frequently neglected in diagnosis, prompting this evaluation of clinical characteristics, diagnosis, and prognosis across five subtypes.
Cohort (n=57)
No
In a single-center cohort of retroperitoneal liposarcoma, half of the patients were asymptomatic at presentation, and R0 resection was the key treatment, with a 25% recurrence rate over a mean 4.5-year follow-up.
Answers are grounded in this paper and cite their sources.
May aid recognition of often-asymptomatic cases; leaves open prospective validation of subtype-specific prognoses and R0 resection impact.
Background. Liposarcoma is a soft tissue malignancy, commonly observed in the extremities. However, retroperitoneal liposarcoma is seldom reported and its diagnosis is frequently neglected. This study aims to present the clinical characteristics, diagnosis, and prognosis of five liposarcoma subtypes and report our experience of patient treatment. Methods. We conducted a single-center noninterventional retrospective study of 57 retroperitoneal liposarcoma patients admitted to Peking Union Medical College Hospital (PUMCH, Beijing, China) between July 2011 and December 2019. We collected and analyzed their demographic, clinical, imaging, histological, therapeutic, and prognostic data over a mean 4.5-year follow-up period. Results. Twenty-five (44%) patients were asymptomatic prior to diagnosis, with abdominal distension as the chief complaint in 18 (32%) patients and abdominal pain observed in 16 (28%) patients. Masses were evaluated by computed tomography (n = 48, 84%) or ultrasound (n = 25, 44%). Laparotomy (n = 52, 91%) was the dominant therapeutic modality rather than laparoscopy (n = 5, 9%). All patients were treated with R0 resection except two patients who underwent R2 resection. We conducted regular follow-ups every six months after surgery for a mean duration of 4.5 years. Recurrence was experienced by 14 (25%) patients and a further 9 (16%) died during follow-up. Conclusions. Abdominal distension and pain are chief complaints with liposarcoma. As the extremities are the main liposarcomas locations, the diagnosis of retroperitoneal liposarcoma is usually neglected. Since half of the patients are asymptomatic, timely diagnosis and treatment are highly dependent on regular ultrasound and computed tomography imaging. R0 resection is the key to retroperitoneal liposarcoma treatment. In comparison, patients who underwent R2 resection, which is considered a palliative treatment, had bad prognoses. Large, symptomatic dedifferentiated, and pleomorphic liposarcomas are more likely to have poor prognoses, while the prognosis for well-differentiated or myxoid liposarcoma is relatively good.
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Xiao et al. (2021) conducted a cohort in Retroperitoneal liposarcoma (n=57). Retroperitoneal liposarcoma was evaluated on Recurrence and mortality. Among 57 patients with retroperitoneal liposarcoma, recurrence occurred in 25% and death in 16% over a mean 4.5-year follow-up, with R0 resection being key to better prognosis.
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