Assuntos
Fluordesoxiglucose F18 , Linfoma Difuso de Grandes Células B , Humanos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Linfoma Difuso de Grandes Células B/complicações , Linfoma Difuso de Grandes Células B/diagnóstico por imagem , Linfoma Difuso de Grandes Células B/patologia , Compostos Radiofarmacêuticos , Peritônio , Tomografia por Emissão de PósitronsRESUMO
18Fluorine-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) plays a pivotal role in the staging, restaging, and surveillance of various bone tumors, including plasmacytomas and osteosarcomas. Solitary plasmacytomas most frequently occur in the bones and are primarily treated with either surgery or radiotherapy. Radiation-induced osteosarcomas (RIOS) usually develop after a median interval of 11 years between radiation and sarcoma presentation. However, these can rarely present with a short latent period of 4 years or even lesser. In such cases, whole-body imaging plays a vital role in the early detection and management of RIOS. Herein, we present the case of a 29-year-old female patient with solitary plasmacytoma undergoing a follow-up whole-body 18F-FDG PET/CT, which revealed metastatic RIOS after a short latent period.
RESUMO
Tumour thrombus is an uncommon complication with ominous outcomes. F18 FDG PET-CT scan helps in differentiating tumour thrombus from venous thrombus owing to its metabolic uptake similar to the tumour. We discuss an interesting case of gastric malignancy with complete splenic vein tumour thrombosis on initial presentation.
Assuntos
Neoplasias Gástricas , Trombose , Fluordesoxiglucose F18 , Humanos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Tomografia por Emissão de Pósitrons , Compostos Radiofarmacêuticos , Veia Esplênica/diagnóstico por imagem , Neoplasias Gástricas/complicações , Neoplasias Gástricas/diagnóstico por imagem , Tomografia Computadorizada por Raios XRESUMO
Breast cancer is the most common etiology of leptomeningeal carcinomatosis (LC), with or without brain parenchymal involvement. However, only 5% of patients with breast cancer develop leptomeningeal metastasis even in late clinical course. It can rarely be detected on bone scintigraphy. MRI is the modality of choice.
Assuntos
Neoplasias da Mama , Juglans , Carcinomatose Meníngea , Humanos , Imageamento por Ressonância MagnéticaRESUMO
The synergy of the anatomic-metabolic details provided by PET-CT plays a substantial role in the diagnostic workup of Pyrexia of Unknown Origin (PUO). Although several imaging modalities have been used in the detection of cause of PUO, PET-CT is the most sensitive and specific modality for detection of cause. RCC is a rare cause of PUO.
Assuntos
Carcinoma de Células Renais/diagnóstico por imagem , Febre de Causa Desconhecida/etiologia , Neoplasias Renais/diagnóstico por imagem , Adulto , Sedimentação Sanguínea , Proteína C-Reativa , Carcinoma de Células Renais/sangue , Carcinoma de Células Renais/complicações , Carcinoma de Células Renais/cirurgia , Febre de Causa Desconhecida/sangue , Fluordesoxiglucose F18 , Humanos , Neoplasias Renais/sangue , Neoplasias Renais/complicações , Neoplasias Renais/cirurgia , Masculino , Nefrectomia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Compostos Radiofarmacêuticos , UltrassonografiaRESUMO
Renal cell carcinoma (RCC) is the most common solid renal malignancy that metastasizes typically to lungs, bones, liver, adrenals, and lymph nodes. Isolated pleural metastases of RCC are extremely rare, with only few cases reported in the literature. We report one such case of a 60-year-old woman, a known case of RCC of the left kidney who underwent nephrectomy, and on follow-up, PET/CT scan revealed diffuse thick nodular hypermetabolic left pleural thickening, which was later biopsied and turned out to be pleural metastases from RCC. No other site of metastases was found.
Assuntos
Carcinoma de Células Renais/diagnóstico por imagem , Neoplasias Renais/diagnóstico por imagem , Neoplasias Pleurais/diagnóstico por imagem , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Adulto , Carcinoma de Células Renais/patologia , Isótopos de Gálio , Radioisótopos de Gálio , Humanos , Neoplasias Renais/patologia , Masculino , Glicoproteínas de Membrana , Compostos Organometálicos , Neoplasias Pleurais/secundário , Compostos RadiofarmacêuticosRESUMO
Bone metastases in HCC are uncommon with an incidence of 3% to 20%. Screening for bone metastasis is not a routine practice. Diagnosis is often delayed, and usually made once symptoms develop.
