(2) Well-differentiated liposarcoma
(WDL), also known as atypical lipomatous tumor, is the most common subtype.
The key-point is to consider the possibility that the pelvic mass is a well-differentiated liposarcoma
and to manage it adequately and thus, we recommend intact excision of the mass through a wound protector, and extreme caution to avoid any rupture of the capsule.
Dedifferentiated liposarcoma arising in the background of well-differentiated liposarcoma
, with MDM2 gene amplification detected on fluorescent in-situ hybridization (FISH) testing.
There are different subtypes of liposarcomas, including well-differentiated liposarcoma
and myxoid liposarcoma (16).
Atypical lipomatous tumor (ALT) and well-differentiated liposarcoma
(WDL) are rare liposarcoma subtypes that are histologically identical but distinguished by the 2002 WHO classification: ALTs occur in surgically amenable locations, whereas WDLs do not.
Due to the infiltrative-like pattern of growth of IML, it maybe difficult to distinguish IML from a well-differentiated liposarcoma
, just by means of diagnostic imaging modalities (ultrasound (US), computerized tomography (CT), or MRI).
However, the difference between a lipoma and well-differentiated liposarcoma
(WDL) is often difficult to determine based solely on imaging [1-3].
The theory behind this system is that some STS with relatively low malignancy including desmoid tumor, myxoid liposarcoma, and well-differentiated liposarcoma
often show lower SUVmax [12,13].
Liposarcoma is the most frequent histological subtype, and well-differentiated liposarcoma
(WDL) and dedifferentiated liposarcoma (DDL) account for 90% of retroperitoneal liposarcomas .
Temple, "Imaging of fatty tumors: distinction tion of lipoma and well-differentiated liposarcoma
," Radiology vol.
This tumor was diagnosed as well-differentiated liposarcoma
mixed type, lipoma-like, and sclerosing type, grade 1.
,& Dedifferentiated liposarcoma is a tumour which has a highly cellular non-lipogenic component along with a well-differentiated liposarcoma
. It is most common in males over 50 years of age and occurs in the retroperitoneum,  followed by deep soft tissues of thighs, neck and head region, trunk, mediastinum and the spermatic cord.