RESUMO
Acute appendicitis is a clinical diagnosis typically presenting with right lower quadrant pain. We describe the case of an asymptomatic 53-year-old man with stage 2A diffuse large B-cell lymphoma, who underwent F-FDG PET/CT at the completion of chemotherapy. The scan showed complete lymphomatous disease remission. Incidentally, there was increased FDG uptake in a tubular structure adjacent to the cecum. Clinical examination was negative. Subsequently, the patient presented 6 days later with typical acute appendicitis symptoms. This case is interesting wherein increased FDG uptake in the appendix predated the appearance of clinical symptoms.
Assuntos
Apendicite/diagnóstico por imagem , Fluordesoxiglucose F18 , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Doença Aguda , Apendicite/complicações , Apendicite/metabolismo , Apendicite/patologia , Transporte Biológico , Fluordesoxiglucose F18/metabolismo , Humanos , Linfoma Difuso de Grandes Células B/complicações , Linfoma Difuso de Grandes Células B/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de NeoplasiasRESUMO
Mesenchymal chondrosarcomas are a rare variant of primary chondrosarcomas and can pose a diagnostic dilemma, especially when the features on conventional imaging are equivocal for an aggressive lesion. There is very little PET-CT experience in mesenchymal chondrosarcomas as per the literature and to the best of our knowledge, we are the first to describe a maxillary mesenchymal chondrosarcoma on PET-CT imaging. We report a case where PET-CT not only complemented conventional imaging in suspecting a malignant osseous lesion, but also was indicative of the grade of the tumor.