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Original diagnosis | Second-opinion diagnosis | Comments |
|
Malignant to malignant, 12 cases | | |
Malignant peripheral nerve sheath tumor | Dedifferentiated liposarcoma | MDM2 amplified |
Atypical neoplasm | Well-differentiated liposarcoma | MDM2 amplified |
Myxoid sarcoma | Dedifferentiated liposarcoma | MDM2 failed |
Pleomorphic leiomyosarcoma | Dedifferentiated liposarcoma | MDM2 amplified |
Leiomyosarcoma | Dedifferentiated liposarcoma | MDM2 amplified |
Sarcomatoid renal cell carcinoma | Dedifferentiated liposarcoma | |
Pleomorphic sarcoma | Dedifferentiated liposarcoma | |
Sarcoma | Dedifferentiated liposarcoma with rhabdomyosarcomatous areas | MDM2 amplified |
Leiomyosarcoma | Dedifferentiated liposarcoma | MDM2 amplified |
Undifferentiated sarcoma | Dedifferentiated liposarcoma | MDM2 amplified, ALK negative, CDK4 focal, INI1 + |
|
Low-grade sarcoma | Dedifferentiated liposarcoma | |
Undifferentiated sarcoma | Well-differentiated liposarcoma | MDM2 amplified |
|
Malignant to benign, 7 cases | | |
7 cases of liposarcoma | Lipoma with or without fat necrosis | MDM2 not amplified in all cases, but CDK4 positive in 1 case |
|
Benign to benign, 5 cases | | |
Spindle cell lipoma | Fibrolipoma | MDM2 not amplified |
Hamartoma | Fibrolipoma | |
Spindle cell lipoma | Lipoblastoma | |
Fibrous hamartoma of infancy | Lipoblastomatosis | |
Myxoma | Spindle cell lipoma | |
|
Benign to malignant, 5 cases | | |
4 lipomas, 1 stromal lesion | Well-differentiated liposarcoma | MDM2 amplified in all cases |
|
Intermediate to malignant, 2 cases | | |
Inflammatory myofibroblastic tumor | Dedifferentiated liposarcoma | MDM2 amplified |
Solitary fibrous tumor | Dedifferentiated liposarcoma | MDM2 amplified, CDK4 positive, MUC4, DOG1, ALK negative |
Nondiagnostic material, 1 case | Dedifferentiated liposarcoma | MDM2 amplified |
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