Este sarcoma de bajo grado rara fue identificado por Meis-Kindblom y Kindblom en 1998.
Los pacientes están en su edad adulta media (rango de tercera a novena década, la mediana de años 53) y los hombres y mujeres son igualmente afectados.
El tumor se presenta como una masa indolora de meses o años de duración. Las lesiones promedio de 3 cm de tamaño. Examen de resonancia magnética demostrarán la extensión del tumor y los ganglios linfáticos regionales y el pecho deben ser evaluados.
La escisión con un amplio margen y largo plazo el seguimiento es necesario.

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Adamantinoma de huesos largos es un tumor maligno sumamente raro de origen epitelial, bajo grado y crecimiento lento que se localiza casi exclusivamente en la tiba y fibula. Este tumor surge usualmente entre la segunda y quinta década de vida y el paciente suele sufrir hinchazones dolorosas. La duración de los síntomas puede variar de semanas a años. En radiografías simples, el adamantinoma aparece como una lesión lítica, excéntrica y propiamente circunscrita. El tratamiento conlleva excisión quirúrgica de tipo amplio.




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Agresivo adenocarcinoma papilar digital es un raro tumor cutáneo de origen glándulas sudoríparas ecrinas que se produce en las superficies plantares de los dedos en la mano y el pie.
Este tumor afecta a más hombres que mujeres, con una edad media de presentación de 52 años (rango: 19-83 años).
Puede tener un curso clínico indolente sin síntomas o el cambio de año. El tamaño tumoral promedio es de 1,7 cm y el MAS pueden estar presentes desde 2 meses a 15 años. El dolor es una queja frecuente de presentación.
Agresivo re-resección quirúrgica o la amputación si es necesario para evitar la recidiva local.

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Aneurysmal bone cyst (ABC) is a solitary, expansile and erosive lesion of bone. The cause of this non-neoplastic lesion is unknown.
Most patients are under 20, but the tumor can occur at any age.
The tumor presents with pain for several weeks with local swelling. Any bone may be involved, but the most common sites include the long bones and the posterior parts of the spinal vertebra.On xrays, the lesion has a destructive, lytic, and expansile appearance.
Most ABC's are sucessfully treated with curettage and packing with bone chips or bone cement.

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An extremely aggressive sarcoma which typically presents with multifocal lesions in an anatomic region. This tumor may arise in association with a bone infarct or Paget's disease. High grade angiosarcoma seems to have two distinct clinical presentations. First, the lesion can present as multiple lesions in a single bone, two or more adjacent bones, or perhaps all the bones of a limb. These lesions seem to have an indolent course and the prognosis remains good. The second presentation is that of single or multiple rapidly progressive lesions that metastasize to other bones or to the lung this form of the disease has a very poor prognosis. This case illustrated the later type.

Patients present with increasingly severe bone pain. The radiographs shown here are of a 35 year old recently married auto mechanic whose wife had just had their first baby. He presented with severe pain in the distal femur. The initial work-up revealed multiple lesions in both lower extremities, including a lesion in the mid-diaphysis of the ipsilateral tibia and two lesions in the contralateral femur. A CT scan of the chest showed pulmonary nodules. Biopsy showed high-grade angiosarcoma of bone. Multiple, lytic, aggressive appearing lesions in a bone or adjacent bones.
Wide surgical resection and ajuvant therapy.

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Tug lesion, also known as avulsive cortical irregularity is an overuse injury that occurs in the knees of children. It can be mistaken for a tumor.
Children between 11 and 14, depending on bone age, get this lesion.
Symptoms are knee pain with athletic activityOn xrays, at the distal posterior medial end of the femur, just above the growth plate, a cortical irregularity is seen.
Treatment is rest and observation

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Bizarre parosteal proliferación osteochondromatous (BPOP) es una lesión rara que ocurre más comúnmente en las manos y los pies.
Este tumor se presenta en adultos en sus 20's y 30's
Hay una historia de una masa ligeramente dolorosa En las radiografías simples, una masa ósea con márgenes bien definidos se considera que debe aplicarse a la superficie del hueso
La extirpación completa con el margen óptimo es el tratamiento de elección.

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A solitary area of mature, lamellar bone located within another bone, usually within an area of cancellous bone.

Patients are generally asymptomatic. These lesions are typically incidental finding on x-ray or other imaging study made for an unrelated reason.Most are 1 - 2 mm is size, but some can be up to 1 -2 cm. or even more. The lesion is latent, and merges at its margin with the surrounding bone. May be multiple, as in osteopoikilosis.
No treatment is needed. After the diagnosis has been confirmed, the lesion can be observed without treatment.

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Hyperparathyroidism results in disorders of bone and mineral metabolism. Diffuse and focal lesions may arise in multiple bones. On occasion, a patient with undiagnosed hyperparathyroidism presents with a lytic lesion that may be mistaken for a tumor. These lesions are termed "Brown Tumors" due to the presence of old hemorrhage in the lesion.

Clinically, hyperparathyroidism presents as "stones, bones and groans".Radiologically, hyperparathyroidism presents as diffuse osteopenia as well as circumscribed lucent areas.
Treatment of hyperparathyroidism depends on the etiology of the condition.

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