<prompt> In which case lymph nodes are resected prophylacticallyEmbryonal RhabdomyosarcomaLiposarcomoFibrosarcomaNeurofibroma  <response>: Ans is fa ie Embryonal Rhabdomyosarcoma Soft tissue sarcomas are tumors of mesenchymal origin.Unlike most carcinomas, soft tissue sarcomas rarely metastasize to the lymph nodes 5; therefore lymph node surgery usually is not necessary.But there are certain soft tissue sarcomas, which have propensity for lymph node metastasis Rhabdomyosarcoma a tumor of striated muscle, is a highly malignant soft tissue sarcoma of infancy and childhood. It is the MC soft tissue sarcoma in children. Rhabdomyosarcoma invades local structures early and metastasis occur by lymphatics and hematogenous spread.Sarcomas in which lymphatic metastasis is seenSynovial cell sarcoma.Clear cell sarcomaRhabdomyosarcoma MnemonicEpithelioid sarcoma SCREAMAngiosarcomaMalignant fibrous histiocytoma Also know Ref: Schwartz 9e pl284The most common histologic types of soft tissue sarcoma in adults excluding Kaposis sarcoma are malignant fibrous histiocytoma MFH, 28, leiomyosarcoma 12, liposarcoma 15, synovial sarcoma 10, and malignant peripheral nerve sheath tumors 6.Most common soft tissue sarcoma in children is -- RhabdomyosarcomaMost common site for soft tissue sarcoma is -- extremity 50 to 60 trunk, retroperitoneum, and head and neck. Soft tissue sarcomas generally metastasize by the hematogenous route.Most common site of metastasis for soft tissue sarcomas is - Lungs Exception to this are:GIST retroperitoneal sarcomas -LiverMyxoid liposarcomas - Fatty tissuesClear cell sarcomas - Bones 