ABSTRACT
We report a 68-year-old woman presenting with pain and swelling in her left elbow. An elbow magnetic resonance with gadolinium evidenced bone marrow infiltration and a bone infarct. Given these findings, a body CT scan was performed which showed multiple mesenteric adenopathies and a large retroperitoneal mass. A lymph node biopsy confirmed a B cell lymphoma. Monoarthritis with no systemic manifestations represents a highly uncommon form of presentation of lymphoma. Moreover it usually affects inferior limbs, particularly in the presence of bone infarction.
Subject(s)
Humans , Female , Aged , Arthritis/etiology , Lymphoma, B-Cell/complications , Elbow/diagnostic imaging , Humerus/blood supply , Infarction/etiology , Arthritis/diagnosis , Bone Marrow Diseases/etiology , Bone Marrow Diseases/diagnostic imaging , Magnetic Resonance Imaging , Lymphoma, B-Cell/diagnostic imaging , Tomography, Spiral Computed , Infarction/diagnostic imagingABSTRACT
El infarto renal agudo constituye un diagnóstico infrecuente. Ello puede deberse a que sus síntomas son similares a los de los cálculos renales o la pielonefritis aguda. Por esa razón, el síntoma cardinal de dolor de flanco debe ser investigado en forma muy acabada. Esta serie clínica revisa seis casos de infarto renal agudo vistos en esta institución durante el año 2007.
Acute renal infarction represents an uncommon diagnosis. Its symptoms may overlap with other disorders such as renal stones or pyelonephritis. Therefore a thoroughly study of the patient with flank pain is mandatory. This clinical series assess the main diagnostic and etiologic features of patients diagnosed as acute kidney infarction.
Subject(s)
Humans , Male , Adult , Female , Middle Aged , Kidney Diseases/diagnosis , Kidney Diseases/etiology , Infarction/diagnosis , Infarction/etiology , Abdominal Pain/etiology , Kidney Diseases/diagnostic imaging , Infarction/diagnostic imaging , Renal Artery Obstruction , Risk FactorsABSTRACT
OBJECTIVE: To characterize the imaging features on gray-scale and contrast-enhanced color Doppler US images which differentiate renal ischemia from renal infarction. MATERIALS AND METHODS: The segmental renal arteries of eight healthy rabbits were surgically ligated. In four of these rabbits, the ligated renal artery was released 60 minutes after arterial occlusion to cause transient ischemia. In the remaining four rabbits, the arterial ligation was retained to cause a permanent infarction. The gray-scale and contrast-enhanced color Doppler US imaging features of the involved renal parenchyma of both ischemia and infarction groups were compared with respect to the presence or absence of parenchymal swelling, echogenicity changes, tissue loss and perfusion defects. RESULTS: Parenchyma swelling, echogenic changes, tissue loss and perfusion defects were found to be more extensive in the infarction than the ischemia group. The hyperechoic areas reperfused with blood flow recovered normal echogenicity and perfusion, whereas the hyperechoic areas without reperfusion became renal infarcts. CONCLUSION: Gray-scale and contrast-enhanced color Doppler US showed that the hyperechoic areas with reperfusion may reverse to normal parenchyma and allow the differentiation of renal ischemia from renal infarction.