title: Giant retroperitoneal liposarcoma during pregnancy: a case report.
abstract: BACKGROUND
  The peak prevalence of retroperitoneal liposarcoma (RPLS) is between the age of 40 to 70 years, usually seen in male 1.43:1. RPLS during pregnancy is extremely rare and a challenge for both the surgeon and the pregnant woman.
  
  
  METHODS
  A 27-year-old woman was discovered to have a giant retroperitoneal tumor incidentally during her routine obstetric examination at 16 weeks of gestation. The en bloc resection was performed with preservation of the fetus at 20 weeks of gestation and the final pathology was consistent with low-grade myxoid liposarcoma. The patient had an uneventful pregnancy course with a termed delivery. A CT scan was taken 6 months following the surgery, and no local recurrence was detected.
  
  
  CONCLUSIONS
  With a thorough consultation and multidiscipline collaboration, en bloc resection of retroperitoneal liposarcoma with preservation of the fetus could be feasible in the late second trimester.
authors.affiliation: Department of General Surgery, Beijing Tsinghua Changgung Hospital, Medical Center, Tsinghua University, NO. 168 Litang Road, Changping District, Beijing, 102218, China. phileast@126.com.
authors.forename: DongFang
authors.initials: D
authors.lastname: Huo
authors.affiliation: Department of General Surgery, PLA General Hospital, No. 28, FuXing Road, Beijing, 100853, China. geoffrey301@126.com.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.affiliation: Department of General Surgery, PLA General Hospital, No. 28, FuXing Road, Beijing, 100853, China. Tangyun1@sina.com.
authors.forename: Yun
authors.initials: Y
authors.lastname: Tang
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008080:Liposarcoma / Q000473:pathology / Q000601:surgery*; D011247:Pregnancy; D011379:Prognosis; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed