An 18-year-old man reported cervical adenomegaly that had progressively increased for about one year. The tumor was visible, was non-mobile, had a fibroelastic consistency, was painless on palpation, and showed no signs of inflammation. He was diagnosed with classical Hodgkin’s lymphoma by a lesion biopsy with anatomopathological and immunohistochemical tests (CD15-, CD30-, and PAX-5-antibody–positive). Transthoracic echocardiography showed a large mass with a heterogeneous texture involving the pulmonary artery, the aortic arch (and its main branches), and the proximal descending aorta. […]