Lohaus M, Hansmann J, Witzel A, Flechtenmacher C, Mende U, Reisser C
Universitäts-HNO-Klinik, Heidelberg.
HNO. 1999 Aug;47(8):737-40. doi: 10.1007/s001060050454.
Epidermoid cysts are rare lesions in the head and neck. Most often the are located in the submental region, although they sometimes can impose certain diagnostic problems. We report the case of a 19-year-old girl who presented with a fluctuant, painless, midline swelling of the floor of her mouth that had persisted for three months. Ultrasonographic examination showed a 5 x 5 x 4 cm cystic tumor with the unusual aspect of multiple smaller spherical formations. The differential diagnosis of the lesion included dermoid cysts, epidermoid cysts, ranula and parasitic lesions. Computed tomography and magnetic resonance tomography were not diagnostic. The patient underwent excision of the lesion, during which the cyst was completely removed. Histopathological diagnosis was consistent with an epidermoid cyst. The striking sonographic aspect of multiple spherical formations in the lesion was caused by multiple spherical keratin formations.
表皮样囊肿是头颈部罕见的病变。它们最常位于颏下区域，尽管有时会带来某些诊断问题。我们报告一例19岁女孩的病例，她的口底出现波动性、无痛性中线肿胀，持续了三个月。超声检查显示一个5×5×4厘米的囊性肿瘤，具有多个较小球形结构的不寻常外观。该病变的鉴别诊断包括皮样囊肿、表皮样囊肿、舌下囊肿和寄生虫性病变。计算机断层扫描和磁共振断层扫描均未明确诊断。患者接受了病变切除，术中囊肿被完全切除。组织病理学诊断与表皮样囊肿一致。病变中多个球形结构显著的超声表现是由多个球形角蛋白结构引起的。
