BACKGROUND Aspergillus endocarditis (AE) is a rare and lethal cardiac infection with a high rate of mortality. AE most commonly presents in immunocompromised patients and is associated with various co-morbidities. Herein, we present a case of AE associated with lung, brain, and cervical abscesses after chemotherapy for malignant lymphoma that was successfully treated by a combination of antifungal and surgical therapy. METHODS A 29-year-old man was admitted to our hospital with an unidentified fever. He was diagnosed with malignant lymphoma (extra-nodal NK/T cell lymphoma nasal type), and chemotherapy was administered. After chemotherapy, nodular lung shadows along with new brain, cervical, and myocardial abscesses appeared, despite anti-bacterial/fungal therapy. Gene analysis of the cervical abscess biopsy revealed the presence of Aspergillus fumigatus species, and the transesophageal echocardiogram showed a mobile mural vegetation in the left ventricle (22 × 8 mm). He underwent surgical resection of this mural vegetation. His postoperative course was uneventful. He remains healthy at 28 months after surgery with continued oral antifungal therapy. CONCLUSIONS Although AE associated with immunosuppression is a fatal clinical presentation, combined treatment with surgical resection and antifungal therapy was effective.