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Neglected Right Hemidiaphragmatic Angle Soft Tissue Shadow in a Renal Transplant Recipient Diagnosed as Lymphoma by Xin R. Li, Ai S. Fu, Jia F. Luo, Hong L. Ji, Cheng X. Nie, Yan L. Ge

Background: Post-transplant lymphoproliferative disorders are characterized by atypical clinical manifestations, high mortality, and missed diagnosis rates.
Methods: We report a case of renal transplantation in a patient with unexplained soft-tissue nodular shadows, and the type of the post-transplant abnormal soft-tissue shadows was clarified by puncture biopsy.
Results: The pathologic returns were consistent with the post-transplant lymphoproliferative disease, and the immunohistochemical returns supported a diffuse large B-cell lymphoma (non-growth center origin).
Conclusions: In organ transplant patients, when unexplained soft tissue nodular shadows are present, the possibility of post-transplant lymphoproliferative disorders should be considered, and an aggressive puncture biopsy should be performed to clarify the diagnosis.

DOI: 10.7754/Clin.Lab.2023.231140