Lin Harrison W, Silver Amanda L, Cunnane Mary E, Sadow Peter M, Kieff David A
Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear Infirmary, 243 Charles Street, Boston, MA 02114, USA.
Auris Nasus Larynx. 2011 Oct;38(5):650-3. doi: 10.1016/j.anl.2011.01.002. Epub 2011 Feb 21.
A lateral dermoid cyst is a rare lesion of the floor of mouth, with only 12 cases reported in the literature. We describe the case of a 60-year-old man with a slowly enlarging mass in the submandibular region. Magnetic resonance imaging demonstrated a lesion containing multiple uniformly rounded foci, creating a "sack-of-marbles" appearance. Needle aspirations showed atypical findings, and the mass was excised. Histopathology revealed a cyst containing a keratinizing stratified squamous epithelial lining with apocrine and eccrine glands. These findings were diagnostic of a dermoid cyst, which should be considered in the differential diagnosis of any midline or lateral cervical lesion.
外侧皮样囊肿是口底罕见的病变，文献中仅报道过12例。我们描述了一名60岁男性的病例，其下颌下区有一缓慢增大的肿块。磁共振成像显示病变内有多个均匀圆形病灶，呈现出“弹珠袋”外观。针吸活检结果不典型，遂将肿块切除。组织病理学显示囊肿内衬角化复层鳞状上皮，并伴有顶泌汗腺和小汗腺。这些发现可诊断为皮样囊肿，在任何中线或颈部外侧病变的鉴别诊断中均应考虑到该病。
