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Clinical and Translational Oncology

, Volume 19, Issue 10, pp 1217–1224 | Cite as

Micropapillary bladder cancer: a clinico-pathological characterization and treatment analysis

  • Z. Li
  • H. LiaoEmail author
  • Z. Tan
  • D. Mao
  • Y. Wu
  • Y. M. Xiao
  • S. K. Yang
  • L. Zhong
Research Article

Abstract

Purpose

Micropapillary bladder cancer (MPBC) is a very rare and aggressive variant of urothelial carcinoma (UC). The aim of this study was to investigate the clinico-pathological characteristics, treatment, and prognosis of MPBC to improve the understanding of this invasive disease.

Methods

We reviewed the records of 6 patients with MPBC who were evaluated and treated at our hospital between 2009 and 2015, and additionally reviewed 38 cases reported in the literature.

Results

In 44 cases, 36 cases (81.8%) were male and 8 cases (18.2%) were female, with a male:female ratio of 4.5:1; the median age of the patients was 68 years (range 45–91 years). A majority (81.8%) of patients with cT1 above or with lymph node and distant metastasis (cT2N0 in 18.2%, cT3-4N0 in 13.6%, cTanyN+ in 43.2%, and cTanyM+ in 6.8%). There was a high grade in 70.5% of patients. Lymphovascular invasion (LVI) was present in 61.4% of patients, and LVI in cT2 was more common than in cT1 (71.4 vs 22.2%). 52.3% of patients were treated with radical cystectomy (RC). After a mean follow-up of 16.2 months, 77.3% of patients developed distant metastases, and 47.7% of patients died of the disease. The mean overall survival (OS) was 28.9 months and the median OS was 20 months, and the amount of micropapillary (MPP) is correlated inversely with prognosis.

Conclusions

Micropapillary bladder cancer is a rare variant of UC associated with a poor prognosis, which often presents at an advanced stage with LVI and distant metastases. The optimal treatment strategy is early RC combined with chemotherapy.

Keywords

Bladder tumors Micropapillary Diagnosis Treatment 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Ethical approval

The study was approved by the Ethics Committees of all hospitals.

Funding

No funding received for this study.

Informed consent

Informed consent has been obtained from the patients.

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Copyright information

© Federación de Sociedades Españolas de Oncología (FESEO) 2017

Authors and Affiliations

  • Z. Li
    • 1
  • H. Liao
    • 1
    Email author
  • Z. Tan
    • 1
  • D. Mao
    • 1
  • Y. Wu
    • 1
  • Y. M. Xiao
    • 1
  • S. K. Yang
    • 1
  • L. Zhong
    • 1
  1. 1.Department of UrologySiChuan Cancer HospitalChengduChina

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