2B52
category
Ewing sarcoma, primary site
Definition
A small round cell tumour that lacks morphologic, immunohistochemical, and electron microscopic evidence of neuroectodermal differentiation. It represents one of the two ends of the spectrum called Ewing's sarcoma/peripheral neuroectodermal tumour. It affects mostly males under age 20, and it can occur in soft tissue or bone. Pain and the presence of a mass are the most common clinical symptoms.
6 subordinate codes
2B52.0Ewing sarcoma of bone or articular cartilage of limbs2B52.1Ewing sarcoma of bone or articular cartilage of pelvis2B52.2Ewing sarcoma of bone or articular cartilage of ribs2B52.3Ewing sarcoma of soft tissue4B4YOther specified diseases of the immune system4B4ZDiseases of the immune system, unspecified
Nearby in Malignant mesenchymal neoplasms
2B50Chondrosarcoma, primary site2B51Osteosarcoma, primary site2B53Fibroblastic or myofibroblastic tumour, primary site2B54Undifferentiated pleomorphic sarcoma, primary site2B55Rhabdomyosarcoma, primary site2B56Angiosarcoma, primary site2B57Kaposi sarcoma, primary site2B58Leiomyosarcoma, primary site