浸润性尿路上皮癌,透明细胞型
Infiltrating urothelial carcinoma,Clear cell
概述:
富于糖原具有透明胞浆的尿路上皮癌亚型
发病部位: 膀胱、输尿管、肾盂、尿道
诊断要点:
- 罕见,多见于老年男性,约占所有膀胱尿路上皮癌的 1%;
- 在尿路上皮癌中出现透明胞浆,瘤细胞成片和巢状浸润性生长,类似于透明细胞肾细胞癌,透明细胞成分占 30%~ 90%;
- 常伴有原位尿路上皮癌或乳头状尿路上皮癌或普通的浸润性尿路上皮癌;
- 糖原染色阳性;PAS 染色阳性,定粉酶消化后为阴性。
免疫组织化学染色:
GATA3. P63. thrombomodulin、CK7. CK20 阳性。透明细胞成分可表达 HNF-1beita
分子标记:
同普通型尿路上皮癌
鉴别诊断:
转移性透明细胞肾细胞癌 :PAX8,CAIX 阳性,GATA3 和 P63 阴性。
苗勒型透明细胞癌:PAX8,HNF1β,AMACR,NapsinA 阳性,GATA3 和 P63 阴性。
富于脂质的尿路上皮癌:胞浆内富于脂质,存在类似于脂肪母细胞瘤样的细胞。
透明细胞前列腺腺癌累及膀胱:PSA,P501S 阳性,GATA3 阴性。
预后:
侵袭性强,预后差
治疗:
早期根治性切除
病例报道:
Primary clear-cell urothelial carcinoma of urinary bladder: a not-so-clear entity with review of literature.
Kumar L, et al. BMJ Case Rep. 2019. PMID: 31645400 Free PMC article. Review.
参考文献:
Oliva E, Amin MB, Jimenez R, et al. Clear cell carcinoma of the urinary bladder: a report and comparison of four tumors of mullerian origin and nine of probable urothelial origin with discussion of histogenesis and diagnostic problems. Am J Surg Pathol 2002;26:190–7. Clear Cell Urothelial Carcinoma.
Mai KT, Bateman J, Djordjevic B, Flood TA, Belanger EC.Int J Surg Pathol. 2017 Feb;25(1):18-25. doi: 10.1177/1066896916660195. Epub 2016 Jul 28. PMID: 27422469
Hepatocyte Nuclear Factor-1β Expression in Clear Cell Renal Cell Carcinoma and Urothelial Carcinoma With Clear Cell Features: A Potential Diagnostic Pitfall.
Hanley KZ, Cohen C, Osunkoya AO.Appl Immunohistochem Mol Morphol. 2017 Feb;25(2):134-138. doi: 10.1097/PAI.0000000000000279. PMID: 26574638