49 GLOBAL LONGITUDINAL STRAIN TO EVALUATE THE SUCCESSFUL OF MEDICAL TREATMENT IN SECONDARY CARDIAC LYMPHOMA: A CASE REPORT


 
 
 Cardiac lymphoma is often lately diagnosed and associated with a poor outcome because of delayed treatment. We report the case of a patient with diffuse large B-cell lymphoma (DLBCL) massively infiltrating the heart, who showed significant improvement in echocardiographic features after high-dose chemotherapy.
 
 
 
 A 39-year-old female was admitted to our hospital after a vasovagal syncope secondary to excisional biopsy of an inguinal lymph node. Symptoms and signs were consistent with heart failure. Brain natriuretic peptide was markedly elevated (472 pg/ml). Transthoracic echocardiography (TTE) revealed moderate hypertrophy of both ventricles, with preserved left ventricular ejection fraction, reduced function of the right ventricle and a monophasic diastolic pattern. Left Ventricular Global longitudinal strain (LV GLS) was significantly reduced (up to -5%). These findings led us to the strong suspicion of biventricular infiltrative heart disease. Positron emission tomography-computed tomography (PET-CT) scan showed metastases to the kidneys, mesenteric and skeletal systems. The results of histological analysis and immunohistochemical staining confirmed the diagnosis of stage IV-B DLBCL. Prompt and aggressive treatment was initiated, performing a multiparametric cardiac monitoring based on biomarkers and TTE prior to and after each cycle of chemotherapy. We early observed a significant reduction of myocardial infiltration with an impressive recovery of LV GLS up to -10% after the 1st cycle of chemotherapy. The echocardiographic abnormalities of the right chambers resulted totally restored. Complete regression of the cardiac lymphoma was obtained, with a recovery of LV GLS up to -11.2% at the end of protocol and -16.8% at the 1st month follow-up. The PET-CT scan confirmed the recovery of the heart.
 
 
 
 In this case, functional heart improvement due to total regression of cardiac lymphoma has been early detected by strain imaging. GLS could be an early indicator of therapy responsiveness and may be implemented in routinely evaluation of these patients with infiltrative cardiac diseases.
