RESUMO
A 53-year-old woman with diagnosis of colorectal cancer, who received surgical treatment and chemotherapy. After 5-years of complete remission, she showed an atypical oncological evolution. The utility of (18)F-FDG PET/CT scan has been fundamental to detect suspected and unsuspected recurrence and to monitor response to treatment.
Assuntos
Adenocarcinoma/diagnóstico por imagem , Neoplasias Colorretais/patologia , Radioisótopos de Flúor , Fluordesoxiglucose F18 , Imagem Multimodal , Neoplasias Pancreáticas/diagnóstico por imagem , Tomografia por Emissão de Pósitrons , Compostos Radiofarmacêuticos , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/cirurgia , Quimioterapia Adjuvante , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Feminino , Humanos , Leiomioma , Pessoa de Meia-Idade , Segunda Neoplasia Primária , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias da Glândula Tireoide/tratamento farmacológico , Neoplasias da Glândula Tireoide/patologia , Neoplasias UterinasRESUMO
Differentiated thyroid cancer is a disease having a very good prognosis when treated adequately. Ablation treatment with (131)I is frequently adjunct to surgery in these patients since it improves survival. Radioiodine whole-body scan is one of the imaging modality of choice in the follow-up of patients with this kind of pathology. After ablation treatment of the thyroid gland, any radioiodine accumulation in a non-physiological location usually means the presence of functioning metastasis. Recognition of potential false-positives is essential to avoid unnecessary exposure to further radiation from repeated therapeutic doses of radioactive iodine. We report a case of uptake in the chest due to bronchiectasis, potentially masquerading as pulmonary metastasis.
Assuntos
Bronquiectasia/diagnóstico por imagem , Carcinoma/diagnóstico por imagem , Radioisótopos do Iodo/farmacocinética , Pulmão/diagnóstico por imagem , Compostos Radiofarmacêuticos/farmacocinética , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Imagem Corporal Total , Idoso , Antibacterianos/uso terapêutico , Biomarcadores Tumorais , Bronquiectasia/etiologia , Bronquite/complicações , Bronquite/tratamento farmacológico , Carcinoma/sangue , Carcinoma/radioterapia , Carcinoma/secundário , Carcinoma/cirurgia , Terapia Combinada , Diagnóstico Diferencial , Reações Falso-Positivas , Feminino , Humanos , Radioisótopos do Iodo/uso terapêutico , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/secundário , Cintilografia , Compostos Radiofarmacêuticos/uso terapêutico , Tireoglobulina/sangue , Neoplasias da Glândula Tireoide/sangue , Neoplasias da Glândula Tireoide/radioterapia , Neoplasias da Glândula Tireoide/secundário , Neoplasias da Glândula Tireoide/cirurgia , TireoidectomiaRESUMO
OBJECTIVE: To investigate the value of diuretic renography in patients with prenatally diagnosed unilateral hydronephrosis. MATERIAL AND METHOD: We reviewed 44 patients who underwent ultrasonography in the first week of life and 1 month after birth, and cystography and diuretic renography at 1 month to evaluate differential renal function and the diuretic washout pattern. Patients with vesicoureteral reflux were followed-up according to the protocol for this disorder. In the remaining patients, ultrasonography and/or diuretic renography was performed every 3-6 months. RESULTS: In 4/44 patients vesicoureteral reflux was detected as cause a of hydronephrosis. In the remaining 40 patients, diuretic renography showed a washout pattern not suggestive of obstruction in 32 (only one patient needed surgery due to pyohydronephrosis). An indeterminate washout pattern was detected in one patient (who required surgery due to worsening of the washout pattern). A pattern suggestive of obstruction was detected in seven patients, four of whom required surgery (three due to a decrease in differential renal function and one due to worsening of the degree of pelvic dilatation). CONCLUSIONS: Diuretic renography is highly useful in risk stratification and in the management of newborn infants with hydronephrosis since infants with washout patterns not suggestive of obstruction will rarely develop obstructive hydronephrosis and can initially be followed-up with ultrasonography alone. In indeterminate and obstructive patterns, however, close monitoring that includes diuretic renography is mandatory.
Assuntos
Diuréticos , Hidronefrose/diagnóstico por imagem , Renografia por Radioisótopo , Ultrassonografia Pré-Natal , Feminino , Humanos , Lactente , MasculinoRESUMO
This paper aims to present the usefulness of the different diagnosis imaging methods (anatomical and functional) in the characterization of bone injury. Any data, however insignificant, is justified and should be specified. In this case, the discrepancy between the vascular and pool phases in the bone scintigraphy with 99mTc-MDP reveals revealed a lesion with an intense reaction secondary to the "foreign body effect", which is not necessarily malignant.