RESUMO
Krukenberg tumours are a rare form of metastatic tumours of the ovary. They primary site is usually the gastro-intestinal system with the most common being gastric cancer. We present the case of a 35-year-old female coming in with a large pelvi-abdominal mass for investigation. This pelvic mass showed mild to moderate metabolic activity. 18F-FDG PET-CT was able to identify the primary gastric carcinoma. Subsequent histopathology confirmed this to be gastric adenocarcinoma with metastases to the ovary.
Assuntos
Adenocarcinoma , Neoplasias Gástricas , Feminino , Humanos , Adulto , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Fluordesoxiglucose F18 , Tomografia Computadorizada por Raios X , Tomografia por Emissão de Pósitrons , Adenocarcinoma/diagnóstico por imagem , Adenocarcinoma/secundário , Neoplasias Gástricas/diagnóstico por imagem , Neoplasias Gástricas/patologia , Compostos RadiofarmacêuticosRESUMO
68Ga-DOTA NOC PET-CT imaging has been shown to have high accuracy for the evaluation of neuroendocrine tumours. We report a case of a 3-year-old boy who presented with a right paravertebral soft tissue mass. Biopsy showed ganglioneuroblastoma. The patient was referred for 68Ga-DOTA NOC for staging. 68Ga-DOTA NOC PET/CT images showed somatostatin-avid large right paravertebral soft tissue mass representing the primary lesion, along with increased radiotracer localization at multiple metastatic lytic bone lesions in the axial and appendicular skeleton. 68Ga-DOTA NOC PET-CT is helpful in the evaluation of the disease extent of neuroendocrine tumours including ganglioneuroblastoma.
Assuntos
Ganglioneuroblastoma , Tumores Neuroendócrinos , Compostos Organometálicos , Criança , Pré-Escolar , Humanos , Masculino , Ganglioneuroblastoma/diagnóstico por imagem , Tumores Neuroendócrinos/patologia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos , Radioisótopos de GálioRESUMO
18F- Sodium Fluoride (NaF) is an excellent bone imaging agent used for skeletal staging but can also be localized in extra osseous calcifying lesions. We report a case of a 38-year-old woman with breast carcinoma referred for 18F-NaF PET-CT to evaluate possible metastatic lesions. 18F-NaF PET-CT detected incidental focal soft tissue tracer uptake in the right cerebellum with no sign of calcification seen on CT images. Subsequent MRI show high intensity signal lesion confirming brain metastasis. Extra osseous 18F-NaF uptake may provide important diagnostic information that might alter patient management.