Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
J Cancer Res Ther. 2020 Dec;16(Supplement):S233-S236. doi: 10.4103/jcrt.JCRT_840_17.
Epithelial-myoepithelial carcinoma (EMC) is a biphasic low-grade malignant tumor that shows ductal structures lined by the ductal cells with surrounding myoepithelial cells. EMC is most commonly reported in the parotid gland followed by other major and minor salivary glands. EMC of the tongue is an extremely uncommon tumor, with only five previously published case reports. We herein report the sixth case of EMC of the tongue. A 40-year-old female who had throat pain, dysphagia, and right earache for 3 years showed a 4 cm × 4 cm nodular tumor at the base of her tongue. Histopathological and immunohistochemical features were diagnostic of EMC with cervical lymph node metastasis. The metastatic behavior of EMC of the tongue in the absence of myoepithelial anaplasia or high-grade histological features is unusual and reported in this case report for the first time.
上皮-肌上皮癌(EMC)是一种具有导管结构的双相低度恶性肿瘤,由导管细胞和周围的肌上皮细胞组成。EMC 最常发生于腮腺,其次为其他大、小唾液腺。舌部 EMC 是一种非常罕见的肿瘤,仅有五例既往报道。本文报道第六例舌部 EMC。一名 40 岁女性,因咽喉痛、吞咽困难和右耳痛 3 年,于舌根部发现一 4 cm×4 cm 结节状肿瘤。组织病理学和免疫组织化学特征诊断为 EMC,伴颈部淋巴结转移。在无肌上皮不典型或高级别组织学特征的情况下,舌部 EMC 的转移行为不常见,本例为首次报道。