[Imaging of supradiaphragmatic manifestations of extranodal non-Hodgkin's lymphoma]

[Malignant non-hodgkin's lymphoma of the breast and HIV: about a case]

Malignant non-Hodgkin's lymphoma (NHL) accounts for 0.5% of all breast cancers. Diagnosis is essentially based on histology. We report the case of a 42-year old female patient with MNHL of the breast and positive HIV serology. This study aimed to highlight the clinical, radiological and therapeutic aspects of this disease and to emphasize the importance of HIV testing in patients with extraganglionar MNHL.

AIDS-related primary cardiac lymphoma with right-sided heart failure and high-grade AV block: insights from magnetic resonance imaging

A 44-year-old patient, with personal history of AIDS, was referred to our emergency unit with tachycardia and moderate signs of right-sided heart failure. The cardiac MRI study showed an impairment of the right ventricular free and inferior wall and the interventricular septum. The mass was characterized by notable heterogeneity with mixed areas of hypo- and hypersignal intensity in SSFP and T2-weighted images with fat saturation. There was global hyperenhancement of the mass after gadolinium contrast injection on T1-weighted images with and without fat saturation. The entire right coronary artery was included into the infiltrative mass. One day after the admission, the patient suddenly presented a paroxysmal third degree atrioventricular block, permanently corrected by an implanted cardiac pacemaker. Endomyocardial biopsy conformed the diagnosis of B-cell lymphoma. The patient died 4months after the diagnosis of acute heart failure with multi-organ dysfunction, after a short period of improvement under chemotherapy. We present this case to highlight the importance to consider that a large, solitary, right atrial mass in conjunction with pericardial effusion in a patient with HIV infection should lead to consider, as soon as possible, the diagnosis of lymphoma. MRI has explained the conduction disorders by showing the septal extension of the mass, and by demonstrating right coronary artery involvement.