心包脂肪组织中异常的氟代脱氧葡萄糖摄取，类似恶性病变。

Goel Sumina R, Ghesani Munir, DePuey E Gordon, Daniel Sugganth

Radiol Case Rep. 2015 Nov 6;3(3):181. doi: 10.2484/rcr.v3i3.181. eCollection 2008.

Focal mediastinal F-18 FDG uptake may be from potential adenopathy requiring biopsy confirmation or benign active brown adipose tissue to be left untouched. Knowledge of this potential pitfall and precise localization with fusion PET/CT are important in preventing misinterpretation as malignancy. Our case report is important in the aspect that CT was not able to confirm the uptake as benign finding, which led to invasive biopsy and biopsy confirmed it to be a benign brown adipose tissue.

纵隔局灶性 F-18 FDG 摄取可能源于需要活检确认的潜在淋巴结病，也可能是无需处理的良性活跃棕色脂肪组织。了解这一潜在陷阱并通过 PET/CT 融合进行精确定位，对于防止误诊为恶性肿瘤很重要。我们的病例报告的重要之处在于，CT 无法确认该摄取为良性表现，这导致了侵入性活检，而活检证实其为良性棕色脂肪组织。