Histologic classification of STS tumors diagnosed in patients admitted to MSKCC between 1982 and 2021. Liposarcoma, leiomyosarcoma, solitary fibrous tumor, and malignant peripheral nerve sheath tumor represent common histologies in the retroperitoneum and pelvis. UPS/MFH, myxofibrosarcoma, synovial sarcoma, and dermatofibrosarcoma protuberans represent a greater proportion of those tumors diagnosed in the extremity and trunk.