RESUMEN
A case report of a patient with treated Non-Hodgkin Lymphoma is presented. In his usual tomographic control patient was requested a PET-CT scan to supplement prior study that showed a metabo-lically active focus on the left adductor muscle without evident tomographic correlation. Lesion underwent both a soft tissue ultrasound study and a directed biopsy, the latter being positive for secondary infiltration by lymphoma. This case has demonstrated the usefulness of applying complementary techniques in the management of these lesions, mainly of PET-CT scans in the study of unusual sites of spread. This combined medical imaging technique allows accurate lesion localization, which in turn permits performance of a subsequent directed study.
Se presenta un caso clínico de paciente con linfoma no Hodgkin tratado; en control tomográfico habitual se le solicitó PET-CT para complementar su estudio, que demuestra un foco metabólicamente activo en el espesor de músculo aductor izquierdo sin traducción tomográfica evidente. La lesión fue estudiada con ultrasonografia de partes blandas y biopsia dirigida, que resultó positiva para infiltración secundaria por linfoma. Este caso demuestra la utilidad de las técnicas complementarias en el manejo de estos pacientes, en especial la utilidad del PET-CT en el estudio de sitios inhabituales de diseminación. En este examen existe la posibilidad de identificar con precisión la localización de las lesiones mediante la TC complementaria, lo que permite efectuar posteriormente el estudio dirigido.
Asunto(s)
Humanos , Masculino , Persona de Mediana Edad , Linfoma no Hodgkin , Linfoma no Hodgkin/patología , Músculos , Músculos/patología , Metástasis de la Neoplasia , Tomografía de Emisión de Positrones , Tomografía Computarizada por Rayos XRESUMEN
A 70-year-old man with past history of hemicolectomy due to colon cancer underwent a follow-up abdominal/pelvic CT scan. CT revealed a right adrenal metastasis and then he underwent FDG-PET/CT study to search for other possible tumor recurrence. In PET images, other than right adrenal gland, there was an unexpected intense FDG uptake at right inguinal region and at first, it was considered to be an inguinal metastasis. However, correlation of PET images to concurrent CT data revealed it to be a bladder herniation. This case provides an example that analysis of PET images without corresponding CT images can lead to an insufficient interpretation or false positive diagnosis. Hence, radiologists should be aware of the importance of a combined analysis of PET and CT data in the interpretation of integrated PET/CT and rare but intriguing conditions, such as bladder herniation, during the evaluation of PET scans in colon cancer patients.