Maruya S, Kurotaki H, Fujita S, Sariishi T, Shinkawa H, Yagihashi S
Department of Otolaryngology, Hirosaki University School of Medicine, Hirosaki, Japan.
ORL J Otorhinolaryngol Relat Spec. 2001 Mar-Apr;63(2):110-3. doi: 10.1159/000055721.
We report an extremely rare case of chondrosarcoma arising in the left parotid gland in a 45-year-old man who complained of painless swelling of the postauricular region. Computed tomography revealed a well-circumscribed tumor in the parotid area with a rim of scattered calcification. Under the diagnosis of benign parotid tumor, the tumor mass was removed with adequate margin. Histologic features were consistent with a low-grade chondrosarcoma showing lobular growth but clearly separated from adjacent glandular tissue of the parotid gland. Entire examination of the tumor disclosed no component of pleomorphic adenoma. There has been no evidence of recurrence for 2 months after the operation. The current case indicates that the parotid gland could be the site of occurrence of de novo primary chondrosarcoma.
我们报告了一例极为罕见的软骨肉瘤病例，该病例发生于一名45岁男性的左侧腮腺，患者主诉耳后区域无痛性肿胀。计算机断层扫描显示腮腺区域有一个边界清晰的肿瘤，伴有散在钙化边缘。在诊断为腮腺良性肿瘤的情况下，将肿瘤肿块连同足够的切缘一并切除。组织学特征与低度软骨肉瘤一致，呈小叶状生长，但与腮腺相邻腺组织明显分离。对肿瘤进行全面检查未发现多形性腺瘤成分。术后2个月尚无复发迹象。目前该病例表明腮腺可能是原发性软骨肉瘤的新发部位。
