Pulmonary mucosa-associated lymphoid tissue lymphoma with internal calcifications on positron-emission tomography/CT

The Central Cavitation in Pulmonary Diffuse Large B-Cell Lymphoma Detected by 18F-FDG PET/CT

“…Primary pulmonary lymphoma was rarely seen in clinic, and few studies have reported its findings in PET/CT. [1][2][3] The typical primary pulmonary lymphoma demonstrates consolidations, ground-glass opacities, and perilymphatic or bronchovascular spread. 4,5 The central cavity was occasionally seen in pulmonary diffuse large B-cell lymphoma, especially for patients with large lesions or infected with HIV.…”

“…After 3 cycles of rituximab, cyclophosphamide, adriamycin, vincristine, and prednisolone chemotherapy, a second PET/CT was performed, and the FDG uptake level and size of the lesions in the right lung cavity, right pleura, and left thyroid (with SUV max as 1.70, 2.23, and 6.09, respectively) were apparently improved, indicating a partial treatment response. Primary pulmonary lymphoma was rarely seen in clinic, and few studies have reported its findings in PET/CT 1–3 . The typical primary pulmonary lymphoma demonstrates consolidations, ground-glass opacities, and perilymphatic or bronchovascular spread 4,5 .…”