Journals / Bakırköy Tıp Dergisi / 2011 / Cilt: 7 - Sayı: 4

Micropapillary type transitional cell carcinoma of bladder clinical, histological and immunohistochemical properties: A case report

Mesanenin mikropapiller tip değişici epitel hücreli karsinomu klinik, histolojik ve immünohistokimyasal özellikler: Olgu sunumu

Pages
156–160
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Histological examination and immunostaining pattern may be helpful in diagnosis.

📌 3 Key Takeaways

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Objective & Hypothesis:Micropapillary variant of invasive urothelial carcinoma is a rare and agressive tumor of the urinary bladder.
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Key Findings & Data:A 49 years of male patient admitted to hospital with hematuria in 1998 and diagnosed as high grade urothelial tumor had been treated by transurethral resection of tumor after cystoscopic evaluation.
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Conclusion & Impact:Histological examination and immunostaining pattern may be helpful in diagnosis.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Micropapillary variant of invasive urothelial carcinoma is a rare and agressive tumor of the urinary bladder. Its prompt diagnosis in biopsies may contribute to patient survival. A 49 years of male patient admitted to hospital with hematuria in 1998 and diagnosed as high grade urothelial tumor had been treated by transurethral resection of tumor after cystoscopic evaluation. The tumor recurred several times after transurethral resection (TUR) and maintenance intravesical BCG treatment. Despite treatment, tumor was recurred and diagnosed as invasive carcinoma by histopathological examination of transurethral resection of tumor. Consequently, the patient underwent radical cycstoprostatectomy. In gross examination of the bladder, an ulcerated lesion occupying left lateral wall, trigon and partly right lateral wall was seen. Adjacent to ulcerated area, there was a polyp. Histological examination of the samples from the tumor confirmed the initial pathologic diagnosis of urothelial carcinoma. Histologically tumor mostly composed of micropapillary structures. In some areas, adenocarcinoma-like pattern was recognizable. A metastatic lymph node showed micropapillary pattern involvement. The expression of cytokeratin 7 and 20, epithelial membrane antigen (EMA), Leu M1 and carcinoembrionic antigen (CEA) were investigated immunohistochemically. Immunostaining pattern was comparatively examined in two different areas and metastatic lymph node. EMA and cytokeratin 7 expressions was consistently positive in these areas. Cytokeratin 20 was negative. CEA was focally positive in the tumor but negative in the metastatic lymph node. Leu M1 expression was focally positive in micropapillary area in both bladder and metastatic lymph node, but adenocarcinoma-like patern was negative. Micropapillary variant of invasive urotelial carcinoma is highly agressive and rather rare. Although the morphologic features of the cells may appear as low grade origin, the tumor has a an aggressive course. Early recognition of this variant may contribute to patient’s survival. Histological examination and immunostaining pattern may be helpful in diagnosis.

Özet

İnvaziv ürotelyal karsinomanın mikropapiller varyantı az görülen agresif bir tümördür. Bu çalışmada mikropapiller karsinoma saptanan bir olgu, histopatolojik ve immünohistokimyasal özellikleri ile sunulmaktadır. Kırkdokuz yaşında erkek hasta 1998 yılında hematüri yakınması ile başvurdu ve sistoskopik inceleme sonrası tümörün transüretral rezeksiyonu ile yüksek dereceli mesane karsinomu saptandı. Transüretral rezeksiyon ve idameli intravezikal BCG tedavisi sonrası tümör defalarca nüks etti. Tedaviye rağmen nükseden hastada, transüretral rezeksiyon ile invazif ürotelyal karsinoma tanısı konarak radikal sistoprostatektomi uygulandı. Histopatolojik ve immünohistokimyasal yöntemlerle tümör dokusu incelendi. Makroskopik incelemede mesane sol yan duvarından başlayıp trigonu ve sağ yan duvarın büyük bir kısmını tutan 3,2x2,7 cm boyutlarında ülsere lezyon izlendi. Histopatolojik incelemede mikropapiller yapılardan oluşan, derin kas tabakasına kadar invazyon gösteren karsinoma saptandı. Diseke edilen lenf nodlarının birinde metastatik tümör saptandı. Mikropapiller yapıdaki alanlarda, adenokarsinom benzeri alanlarda ve metastatik lenf nodunda immünohistokimyasal inceleme ile Sitokeratin 7, Sitokeratin 20, epitelial membran antijen (EMA), karsinoembriyonik antijen (CEA) ve CD 15 (Leu M1) ekspresyonları araştırıldı. EMA ve sitokeratin 7 ekspresyonu tüm alanlarda pozitif olarak saptandı. İnvazif ürotelial karsinomanın mikropapiller varyantı oldukça az görülen agresif bir tümördür. Tümörün tanısını kolaylaştıracak klinik, radyolojik, histopatolojik ve immünohistokimyasal özellikleri vardır. Tümörün erken tanınması hasta sağ kalımına katkı sağlayabilir.

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Cite This Article

HAHOLU, A., EKİNCİ, Ö., ATEŞ, F., YİĞİT, N., BAYKAL, K., BALOĞLU, H. (2011). Micropapillary type transitional cell carcinoma of bladder clinical, histological and immunohistochemical properties: A case report. Bakırköy Tıp Dergisi, Cilt: 7 - Sayı: 4, 156–160. https://ajindex.com/articles/132852

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