Clin Nucl Med. 2018 May;43(5):356-358. doi: 10.1097/RLU.0000000000002000.
Ga-labeled prostate-specific membrane antigen is a novel radiotracer for imaging of prostate cancer. We report a hormonally treated patient with prostate carcinoma, presenting with lower urinary tract symptoms and rising prostate-specific antigen levels, who underwent Ga-labeled prostate-specific membrane antigen PET/CT for suspected recurrence. No tracer avid lesion was noted in the prostate gland and locoregional area. However, intense tracer avid heterogeneously enhancing soft tissue lesion with cystic areas and coarse calcifications was seen in the anterior mediastinum. PET/CT-guided biopsy from the mediastenal lesion revealed type B2 thymoma.
Ga 标记的前列腺特异性膜抗原是一种新型的用于前列腺癌成像的放射性示踪剂。我们报告了一例患有前列腺癌的激素治疗患者，该患者出现下尿路症状和前列腺特异性抗原水平升高，接受 Ga 标记的前列腺特异性膜抗原 PET/CT 检查以怀疑复发。在前列腺和局部区域未发现示踪剂摄取病灶。然而，在前纵隔可见到强烈摄取示踪剂的不均匀强化的软组织病变，伴有囊腔和粗钙化。纵隔病变的 PET/CT 引导活检显示为 B2 型胸腺瘤。
