Asunto(s)
Anemia de Células Falciformes/complicaciones , Huesos/irrigación sanguínea , Infarto/diagnóstico por imagen , Osteomielitis/diagnóstico por imagen , Tibia , Adulto , Diagnóstico Diferencial , Femenino , Humanos , Infarto/etiología , Osteomielitis/etiología , Cintigrafía , Medronato de Tecnecio Tc 99mAsunto(s)
Neoplasias Primarias Múltiples/diagnóstico por imagen , Neoplasias de las Paratiroides/diagnóstico por imagen , Pertecnetato de Sodio Tc 99m , Radioisótopos de Talio , Neoplasias de la Tiroides/diagnóstico por imagen , Humanos , Masculino , Persona de Mediana Edad , Cintigrafía , Neoplasias de la Tiroides/secundarioRESUMEN
A patient with ovarian carcinoma was evaluated for skeletal metastasis with a routine whole body bone scan. Although no bone metastases were visualized, there was dramatic accumulation of tracer in the soft tissues of the abdomen. CT revealed calcifying soft tissue metastases on the liver surface, the bowel serosa, and in the pelvis corresponding to the abnormal areas of Tc-99m MDP uptake. Tumor necrosis and ongoing calcification within the metastatic sites are possible explanations for this unusual soft tissue concentration of the bone-seeking radiopharmaceutical. In patients with metastatic ovarian carcinoma, careful review of extraosseous regions on bone scan images may provide valuable diagnostic information.
Asunto(s)
Neoplasias Abdominales/secundario , Carcinoma Papilar/secundario , Neoplasias Ováricas/patología , Neoplasias de los Tejidos Blandos/secundario , Neoplasias Abdominales/diagnóstico por imagen , Adulto , Neoplasias Óseas/diagnóstico por imagen , Neoplasias Óseas/secundario , Carcinoma Papilar/diagnóstico por imagen , Femenino , Humanos , Cintigrafía , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Medronato de Tecnecio Tc 99mRESUMEN
Hemangiomas are congenital vascular tumors frequently referred for Tc-99m RBC imaging. A case of soft tissue cavernous hemangioma located in the right side of the face and neck is presented. The importance of the Valsalva maneuver in outlining this lesion is described, and a brief review of the literature is presented.
Asunto(s)
Neoplasias de Cabeza y Cuello/diagnóstico por imagen , Hemangioma Cavernoso/diagnóstico por imagen , Maniobra de Valsalva , Adulto , Eritrocitos , Femenino , Humanos , Cintigrafía , Pertecnetato de Sodio Tc 99mRESUMEN
A case of fracture of the right scapula in the superomedial portion with no history of direct trauma is presented. It is most likely due to jogging with weights in both hands. A brief review of scapular fractures is also reported.
Asunto(s)
Traumatismos en Atletas/etiología , Trastornos de Traumas Acumulados/etiología , Fracturas Óseas/etiología , Trote , Carrera , Escápula/lesiones , Adulto , Trastornos de Traumas Acumulados/diagnóstico por imagen , Fracturas Óseas/diagnóstico por imagen , Humanos , Masculino , Cintigrafía , Medronato de Tecnecio Tc 99m , Levantamiento de PesoRESUMEN
One hundred adult sports medicine patients with clinical findings suggesting chondromalacia of the patella underwent bone imaging. Of these patients, 50 eventually underwent arthroscopic surgery and the remaining 50 were treated conservatively. The intensity of abnormally increased scintigraphic activity in the patella correlated closely with the grade of chondromalacia observed by the arthroscopist. Bone imaging also was of value in directing the arthroscopist to clinically unsuspected torn menisci. In conclusion, for sports medicine patients with clinical findings suggestive of chondromalacia of the patella, bone imaging contributes to an accurate diagnosis and appropriate surgical planning.
Asunto(s)
Artroscopía , Rótula/patología , Medronato de Tecnecio Tc 99m , Adulto , Humanos , Rótula/diagnóstico por imagen , Cintigrafía , DeportesRESUMEN
Twenty-seven patients with chronic knee pain were examined prospectively using conventional radiography, radionuclide angiography, planar bone scintigraphy, and single-photon emission computed tomographic (SPECT) bone scintigraphy. When the results of subsequent arthroscopic examination of all three compartments of the knee were correlated with those of the noninvasive methods, SPECT bone scintigraphy was found to be most sensitive for evaluating the extent of osteoarthritis. Differences in detection sensitivity for articular cartilage damage and synovitis were greatest in the patellofemoral compartment. The frequency with which hyperemia was present in association with cartilage damage and synovitis indicates that osteoarthritis of the knee is capable of producing hyperemia and further implies that increased perfusion cannot be used to distinguish with confidence between osteoarthritis and septic processes involving the knee. SPECT (1.00) and planar (0.91) bone scintigraphy were highly sensitive indicators of torn menisci in a subgroup of 14 patients, each having a prearthroscopic clinical diagnosis of a torn meniscus. This result suggests that for patients with chronic knee pain and clinical suggestion of a torn meniscus, bone scintigraphy has significant potential as a high-sensitivity, prearthroscopic screening examination.
Asunto(s)
Articulación de la Rodilla/diagnóstico por imagen , Dolor , Tomografía Computarizada de Emisión , Adolescente , Adulto , Artroscopía , Enfermedad Crónica , Femenino , Humanos , Traumatismos de la Rodilla/diagnóstico , Traumatismos de la Rodilla/diagnóstico por imagen , Articulación de la Rodilla/patología , Masculino , Persona de Mediana Edad , Osteoartritis/diagnóstico , Osteoartritis/diagnóstico por imagen , RadiografíaRESUMEN
Although the "doughnut" sign in brain scintigraphy is a well known phenomenon, similar findings have recently been reported in bone scintigraphy in osseous and nonosseous lesions. A skeletal doughnut sign in bone scintigraphy caused by giant cell tumor of the proximal fibula is presented with a brief review of literature.
Asunto(s)
Neoplasias Óseas/diagnóstico por imagen , Peroné/diagnóstico por imagen , Tumores de Células Gigantes/diagnóstico por imagen , Adulto , Difosfonatos , Femenino , Humanos , Cintigrafía , Tecnecio , Medronato de Tecnecio Tc 99mRESUMEN
Fecal samples of 36 ground squirrels, Spermophilus beldingi, from Tioga Pass (elev. ca. 3315 m) in the Sierra Nevada, California, yielded oocysts of Eimeria beckeri in nine squirrels, E. citelli in four squirrels, E. beldingii n. sp. in two squirrels, and degenerated, unidentifiable oocysts in ten squirrels. Eimeria beldingii n. sp. oocysts are ellipsoidal, 30-34 X 24-30 (mean 32 X 26) micron with a two-layered, rough, striated wall, without a micropyle or residuum, with polar granules; they contain ellipsoidal or ovoid sporocysts 11-15 X 9-12 (mean 13 X 10) micron with a Stieda body and residuum.