Dedifferentiated Liposarcoma of the Gastroesophageal Junction

Askan G., BAĞCI P. , Hameed M., Basturk O.

TURKISH JOURNAL OF PATHOLOGY, cilt.34, sa.1, ss.104-107, 2018 (ESCI İndekslerine Giren Dergi) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Konu: 1
  • Basım Tarihi: 2018
  • Doi Numarası: 10.5146/tjpath.2014.01297
  • Sayfa Sayıları: ss.104-107


Liposarcoma is one of the most common sarcomas in adults, but very rarely presents as a primary in the upper gastrointestinal system. Herein, we present a 71-year-old male patient who underwent wedge excision biopsy twice and then fine needle aspiration and total gastrectomy for a recurrent gastroeosophageal junction mass. In microscopic sections, both well-differentiated and dedifferentiated components were seen. Tumor cells were positive for MDM2, CDK4 and negative for CD117, DOG1, CD34, SMA, Desmin, S-100, HMB45, SOX10, AE1/AE3, CAM5.2, CK18. Fluorescence in situ hybridization (FISH) was performed and MDM2 gene (12q15) amplification was detected. According to these findings, a diagnosis of dedifferentiated liposarcoma was supported. We believe this is the first reported case of dedifferentiated liposarcoma of the gastroesophageal junction.