Asunto(s)
Artritis Infecciosa/diagnóstico , Enfermedad de Lyme/diagnóstico , Artritis Infecciosa/diagnóstico por imagen , Artritis Infecciosa/microbiología , Trastorno Autístico , Borrelia burgdorferi/aislamiento & purificación , Preescolar , Articulación de la Cadera/diagnóstico por imagen , Articulación de la Cadera/microbiología , Articulación de la Cadera/patología , Humanos , Enfermedad de Lyme/diagnóstico por imagen , Enfermedad de Lyme/microbiología , Masculino , Radiografía , UltrasonografíaRESUMEN
Foreign body ingestion is a common indication for imaging children. Ultrasound can be a useful adjunct to serial radiographs for evaluation of foreign bodies in the enteric tract. This case report describes a child who swallowed a single magnetic rock. Follow-up radiographs 4 days later could not determine progression of the foreign body beyond the stomach. Ultrasound was used to locate it, showing a structure with unexpected posterior reverberation artifact in the stomach. This was correlated with a similar magnet in a water bath demonstrating identical reverberation artifact. This report discusses the underlying factors for the different sonographic appearances and associated ultrasound artifacts of foreign bodies. This knowledge is important when performing sonography as adjunct modality for identification of foreign bodies in the gastrointestinal tract.
Asunto(s)
Cuerpos Extraños/diagnóstico por imagen , Tracto Gastrointestinal/diagnóstico por imagen , Tracto Gastrointestinal/lesiones , Aumento de la Imagen/métodos , Imanes , Ultrasonografía/métodos , Niño , Remoción de Dispositivos , Reacciones Falso Negativas , Cuerpos Extraños/cirugía , Tracto Gastrointestinal/cirugía , Humanos , Masculino , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Resultado del TratamientoRESUMEN
An 18-year-old man with alveolar rhabdomyosarcoma and osseous metastases underwent bone scintigraphy to monitor the effect of chemotherapy. The images showed significant improvement of bone lesions. However, the scan revealed a vertically shaped urinary bladder and diffused increased activity in the genital region. A diagnostic pelvic CT was subsequently performed, which showed a thickened bladder wall, an ill-defined pelvic mass, and extensive subcutaneous edema in the genital region.
Asunto(s)
Huesos Pélvicos/diagnóstico por imagen , Rabdomiosarcoma Alveolar/diagnóstico por imagen , Adolescente , Humanos , Masculino , Rabdomiosarcoma Alveolar/tratamiento farmacológico , Rabdomiosarcoma Alveolar/patología , Tomografía Computarizada por Rayos XRESUMEN
An initial staging FDG PET/CT scan in a 15-year-old female patient with lymphoma revealed FDG-avid tumor in the mediastinum and the neck. After chemotherapy, a restaging PET/CT scan was performed. Although mediastinal and cervical lesions were not visualized, multiple new foci of activity were noted in the bilateral anterior thighs, which corresponded to soft tissue nodules in the subcutaneous tissue on the low-dose CT. On the third PET/CT study, multiple new foci appeared in the subcutaneous tissue in the anterior abdomen. Additional clinical history was obtained, indicating multiple recent subcutaneous injections of anticoagulants.