Metabolic 99mTc-1-Thio-D-Glucose SPECT/CT in the Diagnosis of Brain Metastasis of Genital Diffuse-B-Large Cell Lymphoma (Clinical Case)

Purpose: To demonstrate a rare clinical case of early recurrence of verified primary genital lymphoma and the possibility of 99mTc-1-Thio-D-glucose (99mTc-TG) SPECT/CT using to brain metastasis diagnosis. Material and methods: A patient with a diagnosis of primary diffuse large B-cell genital lymphoma underwent magnetic resonance imaging (MRI) to assess the extent of the disease. Post-treatment follow-up included 18F-FDG PET/CT. To diagnose brain metastasis, 99mTc-TG SPECT/CT and MRI were performed. Results: A rare case of early recurrence of diffuse large B-cell lymphoma with a primary local lesion in the genital organs is described. The possibility of modern methods of nuclear medicine in the diagnosis of early recurrence of malignant lymphoma has been demonstrated. 99mTc-TG SPECT/CT and MRI, were useful for visualization of a high metabolic brain tumor at the outpatient stage and recommendation of high-dose therapy according to the scheme MT-R was done. Conclusion: The article presents a rare clinical case of early recurrence of diffuse large B-cell genital lymphoma. Possibilities of SPECT/CT with 99mTc-TG for visualization of lymphoma metastasis to the brain were demonstrated.