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Tumors of Bone

Telangectatic osteosarcoma

Telangiectatic osteosarcoma is a rare and aggressive variant of osteosarcoma. It accounts for 5% of osteosarcoma' and arises in the metaphysis and diaphysis.

It presents more commonly as a pathological fracture than conventional osteosarcoma.Telangiectatic osteosarcoma is often entirely osteolytic on plain x-ray.

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Tumor de Células Gigantes

Gigante cuentas de células tumorales de 5 a 9 por ciento de todos los tumores óseos primarios.
Posiblemente es el tumor óseo más frecuente en los adultos jóvenes de 25 a 40. Tumor de células gigantes es se encuentran más comúnmente en mujeres que en hombres, y ocurren con mayor frecuencia durante la tercera década (1).
La mayoría de los pacientes presentan dolor progresivo lentamente, con o sin una masa. Los síntomas se presentan cuando la lesión comienza a destruir la corteza e irritar el periostio o cuando el debilitamiento del hueso causada por el tumor provoca dolor debido a fractura patológica inminente. Algunos tumores de células gigantes presentan una fractura patológica. Los hallazgos radiológicos demuestran la lesión es más a menudo excéntrico al eje longitudinal del hueso. El centro es más radiolúcida al aumentar la densidad hacia la periferia.
El tratamiento de los tumores de células gigantes es por la cirugía solamente.

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Unicameral Bone Cyst

Unicameral bone cysts (UBC), also known as simple bone cysts, are lesions that consist of a fluid filled cavity lined by a thin membrane.
It is found most commonly in children ages 5-20, but these lesions occasionally persist into adulthood.
Most UBC's are asymptomatic and only present when a pathological fracture occurs. Some are discovered as incidental findings during an evaluation for an unrelated injury or condition.The lesion appears as a relatively symmetrical, well defined osteolytic area with a thin sclerotic margin.
Closed treatment of the fracture is first priority. One to three percutaneous methyl prednisolone acetate injections at two month intervals have been sucessful at similar rates with a significantly less invasive procedure. The injections consist of 2-5ml of MPA with 2 needles introduced.

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