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| 姓 名: | ××× | 性别: | F | 年龄: | 65-70 |
| 标本名称: | Vulvar lesion | ||||
| 简要病史: | |||||
| 肉眼检查: | |||||
Just signed a case two weeks ago and like to share it with all friends here.
Vulvar mass 5 cm. No previous malignant history.
Fig Key:
Fig 1. 2x
Fig 2. 20x juction
Fig 3. 20x tumor
Fig 4. 40x tumor
Tumor shows similar morphology in different areas.
Please give your differential dx and the requirement for IHC stains if it is your case. What is your favor diagnosis based on the H&E slides?
I will have few weeks vocation and will poster the immunostain photos or results after I come back.
Thnaks,
Thank all of you who read the case and wrote your differential dx. I just came back from China last weekend and sorry for the delay.
IHC:
Vimentin Positive
Epithelial markers negaative: AE1/AE3, Cam 5.2, CK7, CK20
Melanoma markers negative: Melan-A, HMB-45, S-100
Muscle markers negative: SMA, Desmin,
LCA (CD45) See photo
| 以下是引用abin在2008-10-29 18:32:00的发言:
再次学习,并参考了陈国璋教授的讲课资料。 如果是淋巴造血系统肿瘤: LARGE CELL HEMATOLYMPHOID NEOPLASMS: Main considerations
Abundant pink cytoplasm: Histiocytic/ dendritic cell tumor
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Abin has done great job on this case and I am with him for differential diagnoses.
澄泉兄,别掉我们的胃口了,给个结果吧,我们都望眼欲穿了。
于北京机场等机厅

那Granzyme B,EMA,CD56呢?从T细胞的表达上,我认为CD20应该是真阴性,但是在所提供的图片中没有见到阳性信号,好像这个染色不是很漂亮了,呵呵。
这个部位的T细胞淋巴瘤还真是少见。我前一段时间总结了80多例ALCL,没有一例是在宫颈的。现在的免疫表型确实可以诊断ALCL,但是还是想知道其他的免疫表型。还有一个问题就是:ALK-ALCL和PTCL-NOS怎么鉴别?PTCL也是可以表达CD30的。不知道老师在美国是怎么鉴别的?
谢谢老师提供的好病例。不过现在回过头来重新看病例,我还是会首先想到DLBCL,不会马上定位到ALCL,即使一些细胞形态很像,我仍然会首先想到这个部位常见的肿瘤(有点死脑筋噢),呵呵。再次感谢老师!