生长抑素受体
神经内分泌肿瘤
甲状腺
医学
生长抑素
病理
放射科
内科学
作者
V A D'Cruz,Sasha Libbrecht,Anne Hoorens,Kathia De Man,Gabriëlle H. van Ramshorst,Karen Geboes
出处
期刊:Acta gastro-enterologica belgica
[Acta Gastro Enterologica Belgica]
日期:2023-03-01
卷期号:86 (1): 92-94
摘要
Neuroendocrine tumors (NETs) are a heterogeneous group of tumors exhibiting diverse clinical and biological characteristics. Despite the diverse nature of these neoplasms, they share common molecular targets which can be used with the help of nuclear medicine techniques for both imaging and therapy. 68Ga-DOTATATE was approved as a PET tracer by the FDA in June 2016 and allows whole-body imaging of cell surface expression of somatostatin receptors (SSTRs). Since then it has become a functional imaging technique that is a mainstay in the initial diagnostic work-up and staging of NETs. This imaging technique, however, has demonstrated pitfalls which need to be considered. Physiological uptake of 68Ga- DOTATATE occurs in a variety of tissues including the spleen, adrenal glands, kidneys, pituitary glands, liver, salivary glands and thyroid gland. SSTRs are also expressed on leucocytes and macrophages, resulting in inflammatory processes sometimes being misidentified with this imaging technique. We present a case with a radiological image that could be suggestive for a primary neuroendocrine tumor with desmoplastic reaction. 68Ga-DOTATATE showed no remarkable uptake in the central mass, but only faint uptake in the surrounding desmoplastic reaction. The final diagnosis on histological examination, was an inflammatory reaction surrounding biliary pigment.
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