Chondrosarcoma
Chondrosarcoma is a malignant tumor whose cancer cells produce cartilage. It most often arises in bone but can also develop in soft tissue.
Cartilage: A connective tissue with a resilient extracellular matrix that supports structures such as joints, airways, and the nose. Chondrosarcoma is defined by tumor cells producing this tissue’s matrix.
Conventional chondrosarcoma: The most common chondrosarcoma subtype, typically a slow-growing malignant cartilage-forming tumor of bone. It accounts for most cases and provides the baseline pattern for understanding the disease.
Bone biopsy: The removal of a bone-tissue sample for microscopic and molecular examination. A carefully planned biopsy confirms the diagnosis and helps avoid compromising later surgery.
Enchondroma: A benign cartilage-forming tumor that develops within the medullary cavity of bone. It can resemble a low-grade chondrosarcoma, especially when symptoms or imaging findings are subtle.
Cancer staging: The classification of cancer extent based on primary tumor size, regional spread, and distant metastasis. Stage summarizes how far chondrosarcoma has spread and informs treatment planning.
Bone tumor: An abnormal growth in bone that may be benign or malignant and may originate in bone or spread there. Most chondrosarcomas arise in bone, within the broader family of bone tumors.
Dedifferentiated chondrosarcoma: An aggressive chondrosarcoma containing a conventional cartilage tumor beside a distinct high-grade noncartilaginous sarcoma. Its abrupt change in tumor type explains why some cases behave far more aggressively.
Wide excision: Surgical removal of a tumor with a surrounding margin of tissue intended to contain microscopic disease. Complete removal with adequate margins is the main curative treatment for most chondrosarcomas.
Atypical cartilaginous tumor: A low-grade cartilage tumor of the appendicular skeleton, locally aggressive but with very low metastatic potential. This diagnosis distinguishes certain limb lesions from higher-risk chondrosarcoma in the axial skeleton.
Sarcoma survival rates: Statistical estimates of survival among groups of people diagnosed with sarcomas. Chondrosarcoma outcomes differ substantially by subtype, grade, location, and resectability.