腮腺原发性黑色素瘤1例临床病理分析
作者: |
1吴晓峰,
2赵建红
1 黄冈市中心医院耳鼻喉科,湖北 黄冈 862300 2 黄冈市中心医院病理科,湖北 黄冈 862300 |
通讯: |
吴晓峰
Email: 105944535@qq.com |
DOI: | 10.3978/j.issn.2095-6959.2020.03.037 |
摘要
腮腺原发性黑色素瘤是一种临床少见病例,目前国内外多为个案报道,黄冈市中心医院近年收治的1例病例。患者49岁,右耳下无痛性包块1年余,近半年包块逐渐增大,现增大迅速,伴右侧口角歪斜,CT检查显示右腮腺区内3.7 cm × 1.9 cm团片状软组织密度影。大体检查见腮腺内2.5 cm质硬区,切面灰红色。HE镜下见肿瘤组织位于腮腺内,瘤细胞排列成片状、岛状、腺泡状,有大量较厚的纤维间隔,瘤细胞向腮腺内浸润性生长,部分瘤细胞围绕血管增生形成假菊形团样,可见明显片状出血坏死,形成小囊腔,有较多薄壁小血管,部分脉管内可见瘤栓形成,细胞较小,大小较一致,呈浆细胞样,瘤细胞内外可见少许粗大的黑色素颗粒。免疫标志HMB45,Melan-A,CD146,SOX10,S-100,vimentin均阳性表达,CK7,34ΒE12,P63,Calponin,CK,CEA均阴性表达,Ki-67增殖指数约30%。腮腺原发性黑色素瘤是一种少见的恶性肿瘤,其诊断需结合临床特点,病理组织学形态及免疫表型。
关键词:
腮腺肿瘤;原发性黑色素瘤;鉴别诊断;免疫组织化学
Clinicopathological analysis of a case of parotid gland of primary melanoma
CorrespondingAuthor: WU Xiaofeng Email: 105944535@qq.com
DOI: 10.3978/j.issn.2095-6959.2020.03.037
Abstract
Primary melanoma of the parotid gland is a rare clinical case. At present, only some cases were reported at home and abroad. This article reported one case admitted to Huanggang Central Hospital in recent years. The patient was 49 years old. The painless package under the right ear was more than 1 year old. In the past six months, the package gradually increased. Then, it was increasing rapidly, with the squiggle on the right side, CT examination showed that 3.7 cm × 1.9 cm of flaky soft tissue density in the right parotid gland area. The general examination showed a 2.5 cm hard area in the parotid gland, with a grayish red section. Under microscopy, the tumor was located in the parotid gland. The tumor cells were arranged in a slice, island shape, and glandular shape. There were a large number of thick fiber intervals. The tumor cells grew invasively into the parotid gland, and some tumor cells formed a pseudo chrysanthemum cluster around the angiogenesis. Flak hemorrhage and necrosis could be seen visibly, small cystic cavitys were formed, and more thin walls, and small blood vessels, and the formation of tumor supositories in some vascular vessels were found. The tumor cells were small, the size was relatively consistent, and the plasma cells were alike. A few coarse melanin particles could be seen inside and outside the tumor cells. Immunographic markers HMB45, Melan-A, CD146, SOX10, S-100, vimentin were all expressed positive, CK7, 34ΒE12, P63, calponin, CK, CEA were all expressed negatively, and the Ki-67 proliferation index was about 30%. Primary melanoma of the parotid gland is a rare malignant tumor. It’s diagnosis needs to combine clinical characteristics, pathological morphology and immune phenotype.
Keywords:
parotid tumor; primary melanoma; differential diagnosis; immunohistochemistry