Positive urinary cytology in patients with lung cancer in the absence of obvious urine tract metastases
Date
2011Author
Voulgaris, E.![ORCID logo](https://orcid.org/sites/default/files/images/orcid_16x16.png)
Pappa, L.
Bafa, M.
Goussia, Anna
Dalezis, P.
Tsombanidou, C.
Geromichalos, G.
Papageorgiou, A.
Koutsilieris, M.
Malamou-Mitsi, Vassiliki D.
![ORCID logo](https://orcid.org/sites/default/files/images/orcid_16x16.png)
Source
Lung CancerVolume
73Issue
1Pages
51-58Google Scholar check
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Purpose: To study the phenomenon of positive urine cytology in patients with lung cancer in the absence of obvious urothelial metastases. Patients and methods: 150 patients with small (SCLC) and non-small cell lung cancer (NSCLC) of all stages and 3 control groups were prospectively studied. Immunocytochemical study (cytokeratins 7-20, TTF1) in all positive urine specimens and chemokine profile (CXCR4, CCL21) study of the primary tumor in selected positive patients was performed. In experimental study, C57Bl/6 BALB/C mice injected with LLC lung and 4T1 mammary cancer cells were used for the detection of positive urine cytology. Results: 11% of patients with NSCLC, 7% of patients with SCLC and none of the control group had positive urine cytology. In NSCLC, metastatic disease and high tumor burden positively correlated (p = 0.01 and 0.03 respectively) with the phenomenon. In SCLC, correlation with extensive disease and multiple metastatic sites (p = 0.02 and 0.04 respectively) was found. No correlation was found in either group with: age, gender, histology, performance status, line of chemotherapy, previous platinum-based chemotherapy, adrenal metastases, renal function, abnormal urinary sediment, response to chemotherapy and overall survival (p = 0.9). Distinctive chemokine expression was identified in positive patients studied and was not observed in negative patients (×2 p = 0.008). In the experimental study, only the LLC lung cancer cells were detected in the urine cytology of mice. Conclusion: This phenomenon, carrying undefined pathophysiological mechanisms, seems to characterize only patients with metastatic/extensive disease and high tumor burden. Further studies are needed to validate our preliminary chemokine expression results. © 2010 Elsevier Ireland Ltd.
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