Assuntos
Anoftalmia/complicações , Anoftalmia/terapia , Olho Artificial , Inflamação/terapia , Neoplasias Orbitárias , Olho Artificial/efeitos adversos , Humanos , Inflamação/etiologia , Doenças Orbitárias/etiologia , Doenças Orbitárias/prevenção & controle , Neoplasias Orbitárias/prevenção & controle , Neoplasias Orbitárias/terapiaRESUMO
Presentamos un caso de una paciente en la que se confirmó la ausencia de recurrencia de tumoración retroorbitaria gracias a la fusión de imágenes metabólicas PET con morfológicas RNM. La utilización individualmente de PET o de RNM, no hubiera permitido la obtención de este diagnóstico de certeza. La fusión PET con RNM se realiza actualmente con sistemas informáticos; existiendo ya un primer prototipo en pruebas de cámara híbrida PET-RNM. Este será el siguiente paso de la Medicina Nuclear tras la fusión del PET con la TAC.
We present a patient´s case with the confirmation of absence of a retroorbitary tumor recurrence thanks to the fusion of metabolic PET image with morphologic MRI image. With only the individualy use of PET or MRI, we weren´t able to obtain the certainty diagnosis. At present PET-MRI fusion is made with informatics procedures; with an hybrid PET-MRI scanner in trials. This will be the next step in Nuclear Medicine after the PET CT fusion.
Assuntos
Humanos , Adulto , Feminino , Imageamento por Ressonância Magnética/métodos , Neoplasias Orbitárias , Neoplasias Orbitárias/prevenção & controle , Tomografia por Emissão de Pósitrons , Processamento de Imagem Assistida por Computador/métodos , Compostos Radiofarmacêuticos , Recidiva Local de Neoplasia/prevenção & controleRESUMO
Patients who are at risk for developing an orbital recurrence after enucleation of the eye for retinoblastoma are those with full thickness choroidal invasion or further extension into the sclera or extension into the optic nerve beyond the lamina cribrosa. The authors have treated these patients routinely with external irradiation to the orbit but this usually resulted in a dry contracted socket that often would not accept a prosthesis. An orbital implant was designed with 125I seeds in an attempt to improve the cosmetic result. It consisted of seven rows of 125I seeds, six of which were partially screened and implanted around the periphery of the orbit so that the contents were irradiated whilst reducing the dose to the bony orbit. The seventh central row was unscreened. A metal disc, with 125I seeds sealed to the posterior surface, was sutured beneath the eyelids thus protecting them and the accessory lacrimal glands. A TDF of 90-100 over two to three days was given. Thirteen patients have been treated, nine prophylactically and four therapeutically. Three of the latter patients have died of metastases but no local recurrences have been seen. All 13 patients were left with a moist socket that accepted a prosthesis.
