Chondroblastoma is a rare bone tumor

Bone tumor

A bone tumor refers to a neoplastic growth of tissue in bone. Abnormal growths found in the bone can be either benign or malignant .-Classification:...

, usually benign

Benign

A benign tumor is a tumor that lacks the ability to metastasize. Common examples of benign tumors include moles and uterine fibroids.The term "benign" implies a mild and nonprogressive disease. Indeed, many kinds of benign tumors are harmless to human health...

 with a slow-growing nature.

In children, it is the most common epiphyseal tumor.

Presentation

It originates from chondroblast

Chondroblast

A chondroblast is a cell which originates from a mesenchymal stem cell and forms chondrocytes, commonly known as cartilage cells. Chondroblasts that become embedded in the matrix are called chondrocytes. They lie in the space or lacunae present in the groups of two or more. The groups are formed by...

s, hence the name. It occurs in about 1% of bone tumors in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Typically, it causes muscle deterioration, decreased movement in joints and pain. Found in patients from the age of 3-73.
Also known as CODMAN'S TUMOR.

Prognosis

Without surgical extirpation, the tumor may extend into distant organs. Metastasis is very unusual and usually involves the lungs and tends to occur at the time of primary tumor recurrence. Relatively high rate of tumor recurrence (10-35%) has been reported for chondroblastomas.

Treatment

Chondroblastoma is usually treated by curettage and insertion of bone graft.
Surgery is needed.
Another treatment that is far less invasive and has less recovery time is radiofrequency ablation.