18 F-FDG PET/CT Manifestation of Unilateral Breast Involvement in a Male Patient With T-Cell Acute Lymphoblastic Leukemia.

Yao, Xilan; Wei, Lijing; Lei, Xiao; Wang, Zheqin; Yang, Jigang · Clin Nucl Med · 2026

case_report · Level V

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Abstract

Unilateral breast infiltration caused by T-cell acute lymphoblastic leukemia (T-ALL) is a rare occurrence. This report presents the 18 F-FDG PET/CT findings of unilateral breast relapse in a male patient diagnosed with T-ALL. After systematic therapy, a follow-up PET/CT scan revealed no evidence of FDG-avid lesions. This case highlights the critical role of PET/CT in detecting and characterizing extramedullary disease involvement.

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