Department of Radiology, Kagoshima University Graduate School of Medical and Dental Sciences, Sakuragaoka, Kagoshima, Japan.
Jpn J Radiol. 2010 Oct;28(8):618-22. doi: 10.1007/s11604-010-0468-3. Epub 2010 Oct 24.
We encountered two cases of epithelial-myoepithelial carcinoma (EMC), a rare low-grade malignant tumor of the parotid gland. These two EMCs showed similar imaging findings: gradual contrast enhancement on dynamic magnetic resonance imaging (MRI), intense (18)F-fluorodeoxyglucose (FDG) uptake in the solid tumor portion, and little enhancement and little FDG uptake in the hemorrhagic necrotic tumor portion. When a parotid gland tumor shows gradual MRI contrast enhancement and focally intense FDG uptake, EMC should be included in the differential diagnosis.
我们遇到了两例外分泌-肌上皮癌（EMC）病例，这是一种罕见的腮腺低度恶性肿瘤。这两个 EMC 的影像学表现相似：动态磁共振成像（MRI）上逐渐增强的对比，实体肿瘤部分摄取大量（18）F-氟脱氧葡萄糖（FDG），出血性坏死肿瘤部分增强和摄取 FDG 较少。当腮腺肿瘤表现为逐渐增强的 MRI 对比增强和局灶性摄取大量 FDG 时，应将 EMC 纳入鉴别诊断。
