YO18 - A case of recurrent myxoid liposarcoma in the retroperitoneum 10 years after the initial operation

Date 18 December 2016
Event ESMO Asia 2016 Congress
Session Poster lunch
Topics Soft Tissue Sarcomas
Surgery and/or Radiotherapy of Cancer
Presenter Takamasa Horiuchi
Authors T. Horiuchi, S. Maekawa, T. Morikawa, S. Takahashi, Y. Homma
  • Urology, the University of Tokyo hospital, 113-8655 - Tokyo/JP

Abstract

Case Summary

A 48-year-old man visited our hospital with a complaint of bleeding from a huge mass on his back in October 2005. Blood tests yielded slight leukocytosis, and moderate anemia. He was admitted to the hospital immediately. He noticed the growing mass on his back from 2000, but he didn’t visit a hospital. After his hospitalization, tumor biopsy was performed. The pathological diagnosis was myxoid liposarcoma. Then, the resection of the huge tumor and local flap angioplasty was performed in November 2005. The resected tumor measured 44×30×26cm and weighted 14kg. The pathological diagnosis was myxoid liposarcoma. The surgical margins of specimen were positive, he received adjuvant chemoradiotherapy. Follow-up CT was performed every year until 2011, no evidence of recurrence and metastasis was revealed. In August 2015, he visited our hospital with a complaint of dehydration. Blood tests revealed acute kidney injury. At the same time, CT revealed an approximately 20 cm sized retroperitoneal tumor accidentally. There was no evidence of metastasis. He was referred to our department for treatment. Contrasted-enhanced CT and magnetic resonance imaging (MRI) revealed an approximately 20 cm sized retroperitoneal tumor which was suspected a recurrence of the back tumor resected 10 years ago. The wide resection of retroperitoneal tumor combined with right kidney was performed in September 2015. The resected tumor measured 23×16×13.5cm and weighted 3.6kg. The pathological diagnosis was myxoid liposarcoma which was same of the back tumor resected 10 years ago. The patient has no evidence of recurrence at 12 months after the operation without any treatment.