Dual Location Dedifferentiated Liposarcoma (Intraperitoneal and Right Inguino-Scrotal): A Case Report

Liposarcoma is one of the most common sarcomas of mesenchymal origin in adults, accounting for 16-18% of malignant soft tissue tumours. It is classified into five histological types: well-differentiated liposarcoma (LBD), dedifferentiated liposarcoma (LDD), myxoid liposarcoma (LM), round cell liposarcoma (LGC) and pleomorphic liposarcoma (LP). LDD is a rare variant with increased aggressiveness compared with other liposarcomas, and many metastases are found at the time of diagnosis. It is usually found in the retroperitoneum and extremities; intraperitoneal localization is rare and inguino-scrotal localization is exceptional. CT is the examination of choice for the positive and differential diagnosis of this type of bimorphic liposarcoma, with a very poor and aspecific clinical picture, but without the precision of histology or immunohistochemistry. We present an LDD of unusual and exceptional intraperitoneal and inguino-scrotal location.