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knee, thigh, distal femur, proximal tibia

Benign cellular myxoma

Benign cellular myxoma, or cellular myxoma of soft tissue, is a benign myxoid lesion that is histologically partway between intramuscular myxoma and low-grade myxofibrosarcoma. This lesion may also be called intramuscular myxoma.
Adults, with a wide age range - 25 to 83
A mass in the extremitiesNo abnormality on xray
Marginal excision is curative.

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Chondroblastoma

Chondroblastoma is a rare, benign tumor derived from chondroblasts. It is found in the epiphysis of long bones, usually of the lower extremity. The most common site is the distal femur followed by the proximal femur, proximal humerus and proximal tibia.
The tumor has a preference for males over females and the mean age of presentation is approximately 20 years old.
The tumor presents as a child, teenager or young adult with pain and swelling in a joint, usually the shoulder, knee, or hip. Occasionally the tumor can occur in the spine causing back pain. In the xray, the tumor forms an expansile lesion in the epiphysis with calcifications
Curettage is the treatment of choice for most of these tumors.

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Chondroblastoma es

El condroblastoma es un tumor benigno poco común derivado de condroblastos. Se encuentra en las epífisis de huesos largos, usualmente en las extremidades inferiores. La localización más común es el fémur distal, seguido por el fémur proximal, humero proximal y tibia proximal.
Este tumor ocurre con mayor frecuencia en hombres que en mujeres, con una edad media de presentación alrededor de los 20 años.
Clínicamente se puede presentar como un niño, adolescente o joven adulto con dolor e hinchazón en articulaciones como el hombro, la rodilla o la cadera. En ocasiones el tumor puede encontrarse en la región espinal ocasionando dolor de espalda. En radiografías, el tumor se presenta como una lesión expansible con calcificaciones en la epífisis.
El curetaje es el tratamiento utilizado para la mayoría de estos tumores.

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Chondromyxoid Fibroma

Chondromyxoid fibroma (CMF) is a rare benign cartilage tumor that mostly occurs in children.
This tumor occurs mostly in teenagers
Patients feel slowly increasing pain and a massOn the xray, an eccentric, lytic lesion appears in the metaphysis
Curettage is the treatment of choice for most of these tumors.

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