腮腺内面神经干神经鞘瘤1例误诊分析

Misdiagnosis analysis:Schwannoma of the facial nerve trunk in parotid gland

1病例报告 患者,女,64岁。发现左面部肿块9d,于2014年5月16日来我科就诊,门诊以“左腮腺肿物性质待查：腮腺囊肿？腮腺混合瘤？”收入院。

A 64 years old woman with chief complain of a lump without pain in her left face for 9 days. She was admitted to head ＆ neck department for tumor of parotoid gland. There was not significan facial paralysis in left face. A no pain lump of 3.5 cm × 4.0 cm with clear boundary was palpable in the left parotoid gland and no motion. Blood and urine routine test,X-ray of chest, electrocardiogram（ECG） were done. Ultrasonography showed that there was a cystic lump of 2.8 cm × 3.4 cm with clear boundary in her left parotoid gland. CT of parotoid gland showed that there was a lump of 2.8 cm×2.3 cm with clear boundary and uneven density in left parotoid gland. While, contrast meium enhancement CT scaning shown that the density is slight uneven enhancement. The lesion of the main facial nerve trunk was visualized and dissected intraoperatively and was diagnosed as Schwannoma of facial nerve by pathology postoperatively.